Sciencemadness Discussion Board - Latest chemical order?

Latest chemical order?

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TheMrbunGee - 2-4-2020 at 07:26

Formaldehyde 36-38%, purified , 3L, CAS# 50-00-0 - €15.83
Calcium Hypochlorite laboratory grade, 1kg, CAS# 7778-54-3 - €10.62
Methanol pure for analysis - min 99.8%, 5L, CAS# 67-56-1 - €25.46
Hexane pure for analysis - min 99%, 1L, CAS# 110-54-3 - €32.32
Oxalic acid dihydrate, min 99,5%, 1kg, CAS# 6153-56-6 - €10.92
Cyclohexane, pure - min 99%, 1L, CAS# 110-82-7 - €14.28
Activated carbon beads (highly porous), 500g, CAS# 7440-44-0 - €10.12
Iron(III) Oxide, pure for analysis – min 97%, 1kg, CAS# 1309-37-1 - €13.66

B(a)P - 2-4-2020 at 23:58

Just received 20 g of silver rod and 1 g and platinum rod. Very happy, thanks very much draculic acid69!

Edit, so excited I got the mass wrong

[Edited on 3-4-2020 by B(a)P]

Cou - 5-4-2020 at 19:14

Just received a bottle of 500 grams of benzophenone, for grignard reactions and drying ether

waiting for sodium metal and potassium hydroxide for drying ether

woelen - 20-4-2020 at 06:44

I cam across some so-called "new old stock" chemicals. Material, which is old, never used, and still in unopened original package. Some chemicals, which you normally cannot find easily:

sodium arsenate
methylamine HCl
phenolphtaleine powder
sodium chloroacetate
urea (analytical grade, not the greasy prills you normally can buy as fertilizer)

Best thing is the very low price for these chemicals.
The methylamine HCl can be useful for making methylamine easily. Just mixing with NaOH and gently heating drives off the gas and allows me to do experiments with that. No problem where I live, methylamine is not forbidden in NL.

Cou - 20-4-2020 at 08:16

Choline chloride and glycerin for extracting alcohols from crude esters. https://www.sciencedirect.com/science/article/pii/S004040391...

Holy Sh*t, I wouldn't touch sodium arsenate with a 60 foot pole!

[Edited on 20-4-2020 by Cou]

valeg96 - 20-4-2020 at 08:33

[Edited on 21-4-2020 by valeg96]

mackolol - 21-4-2020 at 02:25

Here in Poland I have one very good seller that I order usually from. He has small company offering small quantities of reagents in low price for experiments. One can as well order bigger quantities with discount. This company has wide choice of reagents and what's funny about it, that the reagents are packed in urine containers, some in milk bottles and some in cheap plastic or glass bottles. It looks very oldschool and has its climate and although it is packed in such way, the reagents are good grade. The seller is also very communicative.

Lately I ordered from him anhydrous AlCl3, which was little above 2 times cheaper than normally in Poland and i'm very pleased with the order.

Refinery - 26-4-2020 at 08:03

Not necessarily on this topic, but is it forbidden to trade stuff on this forum or request any specific items from other users?

woelen - 2-5-2020 at 12:12

Quote: Originally posted by woelen

I cam across some so-called "new old stock" chemicals. Material, which is old, never used, and still in unopened original package. Some chemicals, which you normally cannot find easily:

sodium arsenate
methylamine HCl
phenolphtaleine powder
sodium chloroacetate
urea (analytical grade, not the greasy prills you normally can buy as fertilizer)

Unfortunately I'll have to wait. The seller's postal service does not ship abroad anymore, due to the Covid-19 crisis. The seller will check out at regular intervals, but till that time he cannot ship the materials. I ordered some other stuff at the same seller in February and that order still could be shipped, but now I'll have to wait for an unknown period of time

j_sum1 - 2-5-2020 at 21:36

Nothing particularly special. But I have been so inactive of late every little thing is noteworthy.

I ordered a kg of Al powder from auschems. I found a couple of other items already stored in my basket from waay back: some ammonium carbonate and benzoic acid. No immediate plans but good to have some basics. Now, if only they had some zinc powder in stock. I am nearly out.

Of course I wishlisted a bunch of other items that I have no need for but will probably get when I have spare cash.

Arrived within 4 days. Auschems is pretty darned good.

teodor - 6-5-2020 at 07:50

This is "DPD 1" pills for pools. I believe it is N,N-Diethyl-p-phenylenediamine and I need it for the purpose of quantitative chlorine analysis in gas experiments.
I am not sure whether is it a pure compound or some mix, but it is easily available, so I will try.

Lion850 - 6-5-2020 at 12:47

Got some calcium bromide CaBr2.xH2O yesterday. For making metal bromide salts by double displacement with the metal sulphates. I wanted 100g but the supplier only had 500g bottles available so if anyone in my area wants to buy some off me just message me....

j_sum1 - 6-5-2020 at 17:44

Quote: Originally posted by teodor

This is "DPD 1" pills for pools. I believe it is N,N-Diethyl-p-phenylenediamine and I need it for the purpose of quantitative chlorine analysis in gas experiments.
I am not sure whether is it a pure compound or some mix, but it is easily available, so I will try.

I was wondering what was in these but had not got around to looking it up.

The cheapest I have seen them is $0.12 per pill which is good enough for intended use but not a great price for bulk. But if you are using it as an indicator, you might not need too much.

Do start a thread to let us know how your experiment goes. I am sure I am not the only one interested.

Lion850 - 18-5-2020 at 00:51

Today I received fine nickel powder (100g) and food grade calcium acetate (200g). Nickel powder to try and make nickel iodide one day, and the calcium acetate to give me a route to make metal acetates by double displacement of metal sulphates with the calcium acetate.
Also ordered sodium molybdate on eBay, as price seemed to good to pass on. But not arrived yet.

DavidJR - 18-5-2020 at 05:44

Recent orders:

1kg oxone ("potassium peroxymonosulfate", but more accurately 2KHSO5·KHSO4·K2SO4).
10g dendritic samarium
100g nickel (II) sulfate heptahydrate
100g ammonium ferrocyanide
10g barium hypophosphite
250g metol (p-methylaminophenol sulfate)
500g succinic anhydride, "practical grade"
500g copper sulfate pentahydrate
175ml chloroethane (in a spray can)
250g p-toluidine
100g 2-ethylanthraquinone
100g congo red

wg48temp9 - 19-5-2020 at 06:21

My order for a 1/4in stainless steel needle valve arrived today. It cost £5.30 including postage from China. The quality looked reasonable and it looks like it has a PTFE ring for sealing the stem. On close inspection of the needle its not seating uniformly and when tested in the closed position it leaks slightly.

https://www.ebay.co.uk/itm/383455916028
I see the price has gone up by about £1

karlos³ - 19-5-2020 at 07:56

Not directly an order, as it was a gift from a friend, but I got some nice treats I looked around to acquire instead of isolating them myself.
Actually only wanted the natural allybenzene for my planned synthesis route, but well, now I got some isomerized propenylbenzene of that substance as well

I'm talking about apiole and isoapiole, just a few grams each but thats enough for my plans.

With the allylbenzene I plan to brominate it, and then go on to prove the simplest primary amination method to work as expected on that substrate.
A tiny little revolution one could say, since this replaces the use of either benzylamine followed by CTH debenzylation, or the use of NaN3 followed by reduction to get the primary amine.
No, I will use a cheap, harmless, well working, and very mild method, I will use sodium diformylamide!
I love that gabriel reagent, it is the best really!

Cou - 21-5-2020 at 18:32

Quote: Originally posted by Refinery

Not necessarily on this topic, but is it forbidden to trade stuff on this forum or request any specific items from other users?

No we have some users who sell to SM users, e.g. mario

monolithic - 22-5-2020 at 10:03

I just bought 64 oz of Liquid Lightning at WalMart. https://www.walmart.com/ip/Liquid-Lightning-Virgin-Sulfuric-...

Crystal clear color, density was measured as 1.818 g/ml @ 27 C which corresponds to 92-93% w/w. Make sure you buy the white bottle shown in my link, which is the virgin/unbuffered formula marketed to professionals. The black bottle is impure garbage, dark brown in appearance with buffers and a concentration (per the MSDS) of something like 44% w/w.

Draeger - 23-5-2020 at 06:56

Bought 100g of sulfur granules and 100g of zinc shavings from Onyxmet for 12€ total. Zinc was 5.50€ and sulfur was 2.00€, while shipping was 4.50€.

j_sum1 - 23-5-2020 at 19:54

A couple of kg of zinc ordered off ebay which I intend to make into powder.

Nothing remarkable in that but the seller, Toby from gembrookcreek recognised me from this board. I am not used to being recognised. Anyway, we had a pleasant little interchange via ebay.
FTR, gembookcreek has a few different metals for sale at what seem to be reasonable prices.

monolithic - 23-5-2020 at 20:47

Quote: Originally posted by j_sum1

A couple of kg of zinc ordered off ebay which I intend to make into powder.

Nothing remarkable in that but the seller, Toby from gembrookcreek recognised me from this board. I am not used to being recognised. Anyway, we had a pleasant little interchange via ebay.
FTR, gembookcreek has a few different metals for sale at what seem to be reasonable prices.

How do you plan on making the zinc into a powder? Sounds interesting but also sounds like a lot of work.

j_sum1 - 23-5-2020 at 21:20

Electrolysis in alkaline solution. Nurdrage has a video on this. He dissolves Zn in NaOH solution and electrolyses with Cu cathide and inert anode. The fine zinc falls off the copper. I intend to use Zn anode so that the zinc in solution is self replenishing.

woelen - 25-5-2020 at 00:53

Quote: Originally posted by woelen

I'm happy with this order again

The material could be shipped, the Covid-19 regulations were loosened. The parcel arrived. I have done my first experiment with the arsenate ion, in comparison with phosphate ion.

G-Coupled - 25-5-2020 at 03:59

NVM

Sorry.

[Edited on 25-5-2020 by G-Coupled]

arkoma - 25-5-2020 at 11:39

@woelen--urea is cheap, easy and pure from DEF--diesel exhaust fluid. Brilliant white xtals from just letting the water evaporate. It has to be very pure so it doesn't poison the catalyst brick in the exhaust.

https://en.wikipedia.org/wiki/Diesel_exhaust_fluid

woelen - 25-5-2020 at 14:15

I have never seen this in NL. Probably it is something which is common in the USA, but not where I live. I did not know of its existence.
Over here, we can buy urea OTC, as fertilizer. The material, however, is off-white and when it is added to water, you get a dirty-looking turbid liquid with a lot of pale brown greasy foam on it. Not really attractive to work with. The urea which I now have is P.A. grade, it dissolves very well and gives perfectly clear and colorless solutions. For 500 grams I only paid GBP 6, very acceptable to me.

XeonTheMGPony - 25-5-2020 at 16:20

https://www.nzchemicalsuppliers.co.nz/content/page/adblue

https://mckeown.co.nz/products-and-services/goclear/

here ya go

It's s old every where in canada too

[Edited on 26-5-2020 by XeonTheMGPony]

Tsjerk - 25-5-2020 at 19:53

The urea solution is called AdBlue in the Netherlands and Germany, it is a 32.5% solution of urea in dH2O.

Labshop.nl also has urea and thio urea.

[Edited on 26-5-2020 by Tsjerk]

arkoma - 26-5-2020 at 08:42

6 Brit pounds for 500gm is high next to DEF.

woelen - 30-5-2020 at 12:12

Keep in mind that the material is A.R. grade. The DEF is for technical purposes and it is dissolved in water.
I am happy with the A.R. grade material. I also have 1 kg of fertilizer grade, but I'll use that for its intended purpose

Lion850 - 4-6-2020 at 18:47

Received today:
Sodium sulfite NaSO3 200g
Sodium nitrite NaNO3 500g
Tin ii chloride SnCl2 100g
Bismuth nitrate Bi(NO3)3.5H2O 500g

And a few 500ml beakers to replace the recent broken ones....

j_sum1 - 5-6-2020 at 00:08

Is your tin chlotide hydrated or anhydrous? The two are very different.
I have used tin dissolved in HCl whenever I have needed tin chloride solution. Much easier than working with the powder.

arkoma - 5-6-2020 at 12:01

Strontium Nitrate.

It's fireworks season soon.....

Lion850 - 5-6-2020 at 13:08

J_sum1 I don’t know if the hydrate or anhydrous. Seems very soluble in water though. How do you dissolve tin in hydrochloric acid? Seems almost no reaction at room temp between tin granules and concentrated HCl. Do you heat it, or add hydrogen peroxide?

arkoma - 5-6-2020 at 13:21

I refluxed tin granules in HCL with vigorous stirring. At the top of my condensor I used my 24/40 to hose barb adapter and ran the hose through a suckback and then into a wash bottle with saturated NaCO₃ solution. Those HCL fumes are really a bitch if not contained.

karlos³ - 5-6-2020 at 13:49

And pound of benzoin, half liter of GAA, DCM and a few grams of NBS

Fun!

j_sum1 - 5-6-2020 at 14:40

Quote: Originally posted by arkoma

I refluxed tin granules in HCL with vigorous stirring. At the top of my condensor I used my 24/40 to hose barb adapter and ran the hose through a suckback and then into a wash bottle with saturated NaCO₃ solution. Those HCL fumes are really a bitch if not contained.

Sounds like you have a good batch of ZnCl2 then.
At my previous school we had both anhydrous and dihydrate. Both were old and likely oxidised. Getting anything better than a cloudy suspension was difficult even in strong acidic conditions.

To dissolve Sn in HCl, melt it first in a shallow container and then swirl. You then get a thin foil free from oxide. Cut into small pieces and stir in concentrated HCl for several hours. Heating would probably speed things up but I did it at RT with plastic wrap over the beaker to contain fumes.

platinum and silver order

ThePKWonder - 13-6-2020 at 18:17

Hello all! I'm a long time lurker here, and I'm excited to join in the fun, and hopefully contribute something useful. I was enticed to finally join by draculic acid69's offers of the sale of small amounts of platinum.

I have recently received an order I placed with him of 2 g of 99.9% Pt, and 10 g of 99.9% Ag while I was at it, and I am very happy with the transaction. He was very responsive and his prices were quite reasonable, especially for such small amounts. I definitely recommend him for anyone looking to buy a small amount of platinum.

Below you can see the samples, along with their masses according to my balance. The coins are just for size reference.

For now my use of the Pt is mostly as an element sample, with vague ideas of future catalyst experiments. I plan to convert the Ag to silver nitrate.

SWIM - 17-6-2020 at 20:57

I just bought 100 grams of palladium 5% on activated carbon.

The minimum bid was so low I couldn't resist the chance to feel like I was gonna buy some, then nobody else made a bid.

It was $1.97 per gram.

I'm assuming 100 grams of 5% palladium must, for some reason, contain less than 5% palladium by weight.

Cheap is cheap, but there's no way I just paid 2/3rds of spot for this.

fusso - 17-6-2020 at 21:13

Quote: Originally posted by SWIM

Cheap is cheap, but there's no way I just paid 2/3rds of spot for this.

WTF im so jealous

woelen - 18-6-2020 at 22:51

Sometimes you really can be lucky. I myself won an auction of NH4ReO4 a few years ago, 160 grams, for just GBP 40, including shipping. I was the only bidder.

Cou - 18-6-2020 at 22:55

500 mL dichloromethane
10 grams 4-dimethylaminopyridine
100 grams n,n-dicyclohexylcarbodiimide
250 mL tert-butyl alcohol

hope i can do some steglich esterifications x)

AvBaeyer - 19-6-2020 at 18:20

Cou,

Be careful, very careful, with n,n-dicyclohexylcarbodiimide (DCC). It is a wicked sensitizer and once you become sensitized to it you cannot even get close to where it is being used. You will break out in a rash and then swell up if your reaction is severe. I had an assistant who was careless and had to go on disability because of sensitivity. Do not let this stuff touch your skin. When you use it, melt it so you can handle it as a liquid with a dropper. Do not try to chip out the solid. If you plan to use it regularly, make up a standard solution in a suitable solvent that you can handle with a syringe.

Also, the reaction product, dicyclohexylurea, is a bitch to get rid of. Even when you think it is gone it will still crystallize out of whatever solution you have. Hopefully you will be able to distill any esters you may make with this reagent.

AvB

arkoma - 20-6-2020 at 08:23

1 pound of zinc dust

morganbw - 21-6-2020 at 15:07

Quote: Originally posted by arkoma

1 pound of zinc dust

I did the same thing a couple of months ago. I later found that I actually had two pounds from more than a decade ago.
Strange the things we forget and place in a box to only be found later.

dawt - 22-6-2020 at 22:12

Quote: Originally posted by morganbw

I did the same thing a couple of months ago. I later found that I actually had two pounds from more than a decade ago.
Strange the things we forget and place in a box to only be found later.

Can't recommend taking inventory enough! I have an excel sheet with all my chemicals including synonyms, CAS numbers etc for easy searching, amount, purity, formula, price, links to GESTIS or MSDS and storage location (as well as a sticker on each bottle which tells me which cabinet it came from) etc. but also molecular mass, concentrations and densities so I can simply put in the number of moles I want to use in a reaction and get the masss or volume I need. Poor man's LIMS ftw!

Anyway, I just used my tax return for a bottle of argon and a nice regulator.

Mateo_swe - 10-7-2020 at 11:28

Disodium phosphate 500g
Strontium titanate 20g
Barium titanate 10g
Phosphorus pentoxide 200g
Copper(II) sulfate pentahydrate 500g
Sodium nitrite 100g
Sodium thiocyanate 100g
Sodium pyruvate 10g
Aluminium chloride (anhydrous) 200g
Urea / Carbamide 99,7% - 1000g
Sodium borohydride 100g
Sodium 99,8% - 100g
DCM 10L
Acetic Anhydride 1000ml

Found this nice shop, i couldnt resist ordering a lot of stuff.
It will be many interesting experiments this fall/winter.

Draeger - 10-7-2020 at 11:53

Quote: Originally posted by Mateo_swe

Disodium phosphate 500g
Strontium titanate 20g
Barium titanate 10g
Phosphorus pentoxide 200g
Copper(II) sulfate pentahydrate 500g
Sodium nitrite 100g
Sodium thiocyanate 100g
Sodium pyruvate 10g
Aluminium chloride (anhydrous) 200g
Urea / Carbamide 99,7% - 1000g
Sodium borohydride 100g
Sodium 99,8% - 100g
DCM 10L
Acetic Anhydride 1000ml

Found this nice shop, i couldnt resist ordering a lot of stuff.
It will be many interesting experiments this fall/winter.

Wow. What is the name of the shop?

Mateo_swe - 10-7-2020 at 12:10

I got all except DCM and AA at the shop linked below.
DCM and AA was on ebay.
The guy selling the DCM & AA is selling a pail with 1000L Acetic Anhydride, i thought i did see wrong but no, he is.
I actually have no use for the AA but when the opportunity to buy some came i though why not, i can do something fun with it.
I checked now, he doesnt have any for sale anymore, i guess i was lucky.

https://onyxmet.com/index.php?route=common/home

Draeger - 10-7-2020 at 13:38

Quote: Originally posted by Mateo_swe

I got all except DCM and AA at the shop linked below.
DCM and AA was on ebay.
The guy selling the DCM & AA is selling a pail with 1000L Acetic Anhydride, i thought i did see wrong but no, he is.
I actually have no use for the AA but when the opportunity to buy some came i though why not, i can do something fun with it.
I checked now, he doesnt have any for sale anymore, i guess i was lucky.

https://onyxmet.com/index.php?route=common/home

Aw, I'd also really have loved to get some AA for future use. I'm curious, how much did it cost?

I know Onyxmet, but I didn't know they sold some of the compounds you listed. IMO they really didn't categorize the compounds well, unless I missed something.
How much did the Onyxmet order cost?

[Edited on 10-7-2020 by Draeger]

Cou - 10-7-2020 at 20:51

100 grams potassium dichromate, for making aldehydes and carboxylic acids from alcohols to find out what they smell like.

still waiting for these items (slow shipping during covid):
500 mL 1-propanol
500 mL 1-butanol
500 ml butyraldehyde
500 mL 1-pentanol

[Edited on 7-11-2020 by Cou]

Mateo_swe - 10-7-2020 at 23:38

The 1000ml Acetic anhydride was 52 Euro plus shipping total 80 Euros.
The Onyxmet order (actually it was 2 orders a few days apart) was 33.75 + 165.5 = 199,25 Euro for the 12 different chems.
The most expensive item fron Onyxmet was the NaBH4 100g that was 45 Euro.
But 45 Euros for 100g Sodium borohydride isnt terrible high compared what others charge for it.
Here are the Onyxmet order with cost in Euros.

Product Quantity Price
Phosphorus pentoxide 100g 30.00€
Copper(II) sulfate pentahydrate 500g 7.50€
Sodium nitrite 100g 10.00€
Sodium thiocyanate 100g 9.50€
Sodium pyruvate 10g 9.75€
Aluminium chloride (anhydrous) 200g 25.00€
Urea / Carbamide 99,7% 1000g 6.25€
Sodium borohydride 100g 45.00€
Sodium 99,8% 100g 22.50€
Disodium phosphate 500g 12.50€
Strontium titanate 20g 6.25€
Barium titanate 20g 15.00€

sciece nerd - 11-7-2020 at 05:47

What are the two titanates used for?
Something pyrotechnics related? (Because you bought the Ba and Sr salts)

[Edited on 11-7-2020 by sciece nerd]

Mateo_swe - 11-7-2020 at 06:28

Nothing that fun im afraid, im going to experiment with some homemade capacitors.
The barium & strontium titanates have very high dielectric constants, just a fun experiment if i can make some usable capacitors.
Fireworks would have been fun but i have very limited knowledge in that area.
I blew a big hole in our garage door when i was 15, since then i havent experimented with explosives and fireworks.

I have thought about making some candy rocketmotors though.
I have some KNO3 and sugar we have in the kitchen.
I have seen a video where they melt the 2 together and pour into cardboard tubes.
Then just drill out the core and you have a DIY rocketmotor.
Some safety precautions must be taken, i dont want blow up another garage door.

[Edited on 2020-7-11 by Mateo_swe]

woelen - 17-7-2020 at 06:53

Some new interesting chemicals for me

100g K2Ni(CN)4.H2O, potassium tetracyanonickelate(II) monohydrate
100g KSbO3, potassium metaantimonate(V)
100g Na2S.9H2O, reagent grade (not the usual yellow flakes, but pure colorless crystals)

Most interesting is the cyanonickelate. It can be reduced and it can be oxidized, making different cyano-complexes of nickel in very unusual oxidation states 0, +1, and +3, without the need to handle free cyanide. In this complex, just as in the ferrocyanides, the cyanide is quite strongly bound to the nickel and hence it is much safer to work with this, than with free cyanide.

[Edited on 17-7-20 by woelen]

BrainAmoeba - 17-7-2020 at 12:35

Some common chemicals in small amounts...

Sodium Azide - 10g
Sulfuric Acid 98% - 100ml
Nitric Acid 60% - 250ml
Potassium Permanganate - 50g

Nonexistent - 17-7-2020 at 12:54

Quote: Originally posted by Mateo_swe

I blew a big hole in our garage door when i was 15, since then i havent experimented with explosives and fireworks.

I have thought about making some candy rocketmotors though.
I have some KNO3 and sugar we have in the kitchen.
I have seen a video where they melt the 2 together and pour into cardboard tubes.
Then just drill out the core and you have a DIY rocketmotor.
Some safety precautions must be taken, i dont want blow up another garage door.

[Edited on 2020-7-11 by Mateo_swe]

Ahh, good old rocket candy. I myself played with it far too often when younger and because of how relatively safe it is (one friend got burnt with it being stupid) I admit, led me to be far too lax later in life, and I mean, wayyyy too relaxed. Luckily no bad burns or lost fingers, but really shockingly so, but hey, if you want some fun and not much danger, it is your friend, just don't let it fool you for other things that can go bang.

I've been looking for a new buy myself but not sure what lately. In Australias worst chemical state I'm limited for both glassware and chems, but really need something to garner my attention other than beer. Reccomendations are welcome.

B(a)P - 17-7-2020 at 13:16

Quote: Originally posted by BrainAmoeba

Some common chemicals in small amounts...

Sodium Azide - 10g
Sulfuric Acid 98% - 100ml
Nitric Acid 60% - 250ml
Potassium Permanganate - 50g

Do you mind me asking where you source your sodium azide?

Cou - 19-7-2020 at 19:21

Hoping to order 250 grams (maybe lower to 50 grams if i freak out about overspending, but it's a useful chemical to invest in) of oxalyl chloride, and 500 mL DMF, for making acid chlorides from carboxylic acids. Pyridine as the organic base required in reaction of acid chlorides with tertiary alcohols to form esters.

[Edited on 7-20-2020 by Cou]

HeYBrO - 19-7-2020 at 22:22

Quote: Originally posted by Cou

Hoping to order 250 grams (maybe lower to 50 grams if i freak out about overspending, but it's a useful chemical to invest in) of oxalyl chloride, and 500 mL DMF, for making acid chlorides from carboxylic acids. Pyridine as the organic base required in reaction of acid chlorides with tertiary alcohols to form esters.

[Edited on 7-20-2020 by Cou]

get some triethylamine and use DMAP as the nucleophilic catalyst

Cou - 20-7-2020 at 14:41

500 mL dimethylformamide
50 grams oxalyl chloride
500 mL N,N-dimethylaniline

for making acid chlorides from carboxylic acids, then reacting them with tertiary alcohols.

[Edited on 7-20-2020 by Cou]

Mateo_swe - 29-7-2020 at 08:00

Where did you find the 500mL N,N-dimethylaniline and was it expensive?
That is not so commonly found, except from the big suppliers not available to most hobby experimenters.

fdnjj6 - 1-8-2020 at 11:59

I mainly just had a HUGE upgrade to my lab equipment. Proper magnetic stirrer hot plate, 3 necked RBF, pH paper (fucking finally! I don't know why buying it took me so long), glass for my digital thermometer I built, and some glass stoppers. I still need to buy a fan to vent fumes and also get some more storage bottles for the chemicals I make.

As far as chemicals goes,
What I'll be ordering in the future:
Potassium hydrogen phthalate
Maybe some oxalic acid
Concentrated solution of sodium hypochlorite

The order I put in a few days ago was the only chemical I didn't buy OTC and that was just because I didn't need a giant jug of it from my hardware store
1/4 pound of potassium permanganate

The chemicals I need I usually source from stuff I can buy at my hardware stores. The multi step synthesis I am planning to do is luckily going to be able to be sourced 100% from easy to get chemicals. The KMnO4 I just want a smaller quantity of.

violet sin - 1-8-2020 at 21:21

Thank you wish.com.... bunch of complaining not needed here, save you the trouble..
100g Ga metal, months late and beat till breached it's bottle. Someone must have crunched it so hard the frozen portion beat through the inner bottle. It was labeled "iron sheet"

In trying to transfer it to other containers, it occurred to me, the solid bit is pretty darn hard. It's melting out of the crippled bottle now. Force didn't adjust the shape at all. It's warm out still, almost would have expected a chunky aggregate of crystals, but no.

Everything seems to have been sealed in the ziplock bag, and most should be recoverable, though inconvenient.

It does get granular in a puddle kinda like weird aggregate, and when dropped, show faceted crystals beneath the liquid film.

15963454931801690161962458839714.jpg - 2.4MB

It was 26$ with 12$ additional shipping, ordered on May 15, and came like above. I wasn't really pleased. I've already some GaInSn from a computer cooling system bought years and years ago, but no straight Ga sample. It's messy, my hands were grey a pile of times trying to wrangle the stuff for measurement.

[Edited on 2-8-2020 by violet sin]

j_sum1 - 1-8-2020 at 21:41

Gallium is surprisingly brittle in solid state. Smash it and bits go everywhere.
As a liquid it wets nearly everything and is hard to get off cleanly.
I dislike working with it. It might be different if I had plenty to spare and was not concerned about mechanical losses.

njl - 2-8-2020 at 07:20

jsum, while not totally ethical I have been able to get total refunds from wish with no need to send the product back, simply because it's too expensive for them to pay for the return shipping. and on a platform like wish I personally would've expected more for that much money.

JJay - 2-8-2020 at 10:24

Tribasic calcium phosphate. I am going to try to reduce it with aluminum.

monolithic - 4-8-2020 at 15:29

Does anyone know where I can get vanillin for cheap? I thought it would be relatively cheap (under $30 a kg) based on posts I've read here. I'm seeing $120 + S&H on chemsavers, possibly $56 + S&H on Amazon (not sure if it's pure vanillin or food grade crap that's 90% sugar), and not much of anything on eBay. I live in the USA. I want to buy 500 g but I'll go for a kg if I have to.

edit: Sigma sells it for $66 per kg, not that they would sell to me. It is cheap even from an expensive supplier like Sigma, I just can't seem to find a place that will sell to private individuals...

[Edited on 8-5-2020 by monolithic]

JJay - 4-8-2020 at 18:37

Yeah, it's pretty easy to find, or at least it was... I don't see why anyone would refuse to sell it to private individuals... you could theoretically be doing something nefarious with it, but that's uncommon, and if you can do nefarious things with vanillin, taking the vanillin away won't stop you from doing nefarious things. I sent you a PM.

Tsjerk - 4-8-2020 at 18:54

Gallium does expand when it freezes, maybe it cracked it the plastic?

violet sin - 4-8-2020 at 23:33

@ Tsjerk
It's quite a flexible container. I'd guess LDPE, strikingly similar to the plastic wash bottles. Mine(wash bottle) is marked LDPE but the gallium container only says "5" on the bottom.

You can see it was punctured in two areas in the second pic. To my untrained eye, it doesn't look like wear or expansion. The hard nuggets inside were sharpish looking as I tried to shake it out. I did notice it's capable of breaking glass on freezing, so I have it outside for the time being in containers I'd assume to be polypropylene. They are shiny, hard and somewhat brittle, so outside, but basically all I had on hand.

@ monolithic,
if I'm not mistaken, dollar tree vanilla extract is just coloring, vanillin and water, with a preservative. It's probably not a whole lot of vanillin, and that makes it probably not cheap, so likely a poor suggestion. Quite available none the less.

The determination of vanillin in vanilla extract: An analytical chemistry experiment
https://doi.org/10.1021/ed067p1070

"The concentration of vanillin in imitation vanillin extract, as purchased from the supermarket, varies with the brand name hut is usually in the range 5+/- 2 mg/mL."

So 200ml for 1g ... Not very good

Cou - 5-8-2020 at 10:44

After 5 months of waiting, I finally received 50 grams of sodium metal from Russia.

B(a)P - 5-8-2020 at 12:25

Quote: Originally posted by Cou

After 5 months of waiting, I finally received 50 grams of sodium metal from Russia.

Glad to hear it! This gives me a faint glimmer of hope my Russian order placed in March may yet show up.

j_sum1 - 5-8-2020 at 14:08

About 220g of lithium rod from a fellow SM member who picked it up cheap. It is stored in a glass jar under air and has some oxidation but it is not too bad. My intention is to improve the storage conditions: probably in the same jar under light hydrocarbon with a lump of lead to prevent flotation.

I will post pics later.

Uses: some for the element collection, some will (eventually) be used to synthesise some Cs. Some will get converted to LiCl. Lots of possible experiments and demos for my students. I will definitely get my money's worth out of it.
(And in the meantime I can be a bit extravagant with the small pile of Li I have scavanged from batteries. Crimson flames, here we come!)

outer_limits - 6-8-2020 at 05:11

Benzene, magnesium, chromic anhydride, diethyl ether, acetone

It's time to do some Grignard reactions

Currently I don't have currently any idea for chromic anhydride but sometimes strange things happen and I bought it somehow

JJay - 6-8-2020 at 17:43

I have been meaning to get some lithium.... It's not cheap, but a little goes a long way.

B(a)P - 7-8-2020 at 02:26

As j_sum1 indicates, you can obtain lithium from batteries. It is relatively straight forward to do.

Draeger - 7-8-2020 at 06:42

Quote: Originally posted by B(a)P

As j_sum1 indicates, you can obtain lithium from batteries. It is relatively straight forward to do.

Can't batteries explode under certain conditions that could occur when you are opening one?

B(a)P - 7-8-2020 at 11:50

Quote: Originally posted by Draeger

Can't batteries explode under certain conditions that could occur when you are opening one?

Yes they can. To mitigate the risk use batteries that are low on charge, understand what the positive and negative terminals are and avoid shorting them and wear nitrile gloves and monitor the temperature of the battery frequently. If it starts to get hot put it outside or in the hood on a flame proof dish.

Lion850 - 13-8-2020 at 20:48

Picked up today at Science Essentials in Brisbane:
- Formic acid 90%, AR grade, 500ml.
- Cobalt sulphate CoSO4.7H2O about 200g
- Cobalt oxide CoO 25g
- Cobalt oxide mix of Co2O3 and Co3O4 25g
For local members: Science Essentials received new stock of Formic acid. More or less A$50 for 500ml or $170 for 2.5L.
Glycine already on order from eBay, 200g. But I should have got it from Science Essentials it would have been a bit cheaper.

outer_limits - 19-8-2020 at 10:02

This week:
- 80 TLC plates
- 50 keck clips from ebay (in "normal" online shops they are 4-6 times more expensive than from China)
- stronger fume hood blower - this one sucks giving almost 0.6m/s of face velocity with sash fully opened (50cm). This will make everything a bit more comfortable. Previous one was only 0.3 m/s at same sash positionig

[Edited on 19-8-2020 by outer_limits]

JJay - 24-8-2020 at 20:30

Tribasic calcium phosphate
Sodium bromide
Tartaric acid
Tin (ingot)
Zinc oxide
3A molecular seives
Strontium carbonate
Sodium borohydride
Nickel chloride
Sodium acetate
Sodium bisulfate
4-hydroxy TEMPO
Formalin

woelen - 31-8-2020 at 03:30

I ordered 4 liters of clean colorless H2SO4 (96%). I still have some H2SO4, but I want to be sure to have some stock for the upcoming years. These 4 liters, together with the well over 2 liters I still have will last a long time for me.

I also purchased a whole set of rather tame chemicals. I have no real application for them in mind, but they were so cheap (so-called new old stock, just a few euros per chemical, all of them A.R. grade in original, still sealed bottle) that I decided to buy the lot:
1 kg of sodium monochloroacetate
1 kg of sodium hydrogen succinate
500 grams of monosodium dihydrogen orthophosphate
500 grams of disodium monohydrogen orthophosphate
500 grams of disodium dihydrogen pyrophosphate
500 grams of sodium metabisulfite
500 grams of sodium thiosulfate 5-hydrate
250 grams of dibutylhydroxytoluene (BHT)
All of these chemicals are quite unreactive. The bottles had tattered labels, but the contents of the bottles is nearly pristine.

If any of you have some interesting ideas for applications of these chemicals, that would be nice.

[Edited on 31-8-20 by woelen]

Bedlasky - 31-8-2020 at 07:10

Phosphate and pyrophosphate can be used as complexing agent for Mn(III). Just dissolve phosphate/pyrophosphate with MnSO4 and sulfuric acid and then add some permanganate. You'll obtain red solution. Pyrophosphate is better for this purpose, you need just a small amount of acid for reaction go forward. With phosphate you need much more acid. These complexes are one of few Mn(III) complexes stable in aqueous solution.

Pyrophosphate is also good complexing agent for divalent cations.

Try synthesis of cobalt phosphate, ammonium cobalt phosphate and cobalt pyrophosphate. First is violet, second is purple and third is pink.

JJay - 31-8-2020 at 10:43

Sodium thiosulfate is good for neutralizing halogens. BHT is good for stabilizing ether. Sodium metabisulfite has several uses... generating sulfur dioxide, neutralizing hexavalent chromium, purifying aldehydes and ketones.

The orthophosphates are good for making buffer solutions. You could make succinic acid and succinimide from the sodium hydrogen succinate.

I forgot to mention that I also got some platinum, one troy ounce.

[Edited on 31-8-2020 by JJay]

Bedlasky - 5-9-2020 at 07:01

I recently obtained some old lab stuff.

KBrO3

100g NaClO4

250g NaBiO3

500g KSCN

KSb tartrate

1kg Borax

500g Phenol

100g Glycine

1kg Na2H2edta

5g CsCl

[Edited on 5-9-2020 by Bedlasky]

Bedlasky - 11-9-2020 at 08:08

500g Na2S2O8

Lets make some sodium orthoperiodate

Cou - 13-9-2020 at 20:42

Just received 500 mL of cyclohexanol from mario. I'll be using it to make cyclohexyl esters and follow some fun Vogel's procedures like preparation of cyclohexene.

I was surprised to find out from MSDS that cyclohexanol is slightly toxic, compared to straight chain alcohols. It's even a possible co-carcinogen. Now I'm wondering if cyclohexyl esters are safe.

Edit: sigma aldrich sells cyclohexyl esters as food grade flavoring agents so they are safe.

[Edited on 9-15-2020 by Cou]

Fery - 14-9-2020 at 10:53

Cou, also allylalcohol is much more toxic than other alcohols.
My latest acquisition: 5,0 g AuCl3 (10 ampoules x 0,5g) intended mostly for gold electroplating.

B(a)P - 22-9-2020 at 12:21

Just received confirmation of an order I made last night. Clearly I was more tired than I thought.
I saw a special on 100 nm Al powder and jumped on it, only $9.95AU for what I thought was 50 g. Turns out I purchased 1 g

What I was really after was 500 g of Barium chloride dihydrate AR, which apparently, I was successful in purchasing

.

Edit: fixed spelling

[Edited on 22-9-2020 by B(a)P]

Cou - 22-9-2020 at 13:57

250 mL of nonanoic acid

Fery - 23-9-2020 at 10:08

Cou, which ester are you planning to synthesize from your nonanoic acid?

Cou - 23-9-2020 at 10:28

Quote: Originally posted by Fery

Cou, which ester are you planning to synthesize from your nonanoic acid?

Probably pentyl nonanoate. It's supposed to smell like apricot or roses.

B(a)P - 23-9-2020 at 12:47

Quote: Originally posted by Cou

Probably pentyl nonanoate. It's supposed to smell like apricot or roses.

That will definitely be an improvement on nonanoic acid

Cou - 23-9-2020 at 12:53

Propionyl chloride, 100g
Isobutyryl chloride 100g
Acetyl chloride, 250ml
Benzoyl chloride, 250g
1,8-Diazabicyclo[5.4.0]undec-7-ene (DBU), 25g

[Edited on 9-23-2020 by Cou]

njl - 24-9-2020 at 08:48

Cou, did you buy those from mario?

edit: just checked out your website, the page where you can chose the components of an ester is really cool!

[Edited on 9-24-2020 by njl]

Cou - 25-9-2020 at 13:17

Quote: Originally posted by B(a)P

Quote: Originally posted by Cou

Probably pentyl nonanoate. It's supposed to smell like apricot or roses.

That will definitely be an improvement on nonanoic acid

the low vapor pressure of nonanoic acid makes it not so horrible (unlike a bottle of butyric acid, which will stink up a whole room even if kept in a sealed bottle). Nonanoic acid has a faint rancid cheese smell, or dirty socks

[Edited on 9-25-2020 by Cou]

B(a)P - 25-9-2020 at 13:25

Quote: Originally posted by Cou

That is interesting thanks, I always thought it was much worse than that.

Herr Haber - 29-9-2020 at 11:31

20 liters of concentrated bleach
1 liter of 50% benzalkonium chloride

Ready for another lockdown

And some sodium thiosulfate, sodium bromide, H2SO4...

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