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arkoma
Redneck Overlord
Posts: 1761
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Location: On a Big Blue Marble hurtling through space
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@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
"We believe the knowledge and cultural heritage of mankind should be accessible to all people around the world, regardless of their wealth, social
status, nationality, citizenship, etc" z-lib
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woelen
Super Administrator
Posts: 7976
Registered: 20-8-2005
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Mood: interested
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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.
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XeonTheMGPony
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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]
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Tsjerk
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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]
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arkoma
Redneck Overlord
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6 Brit pounds for 500gm is high next to DEF.
"We believe the knowledge and cultural heritage of mankind should be accessible to all people around the world, regardless of their wealth, social
status, nationality, citizenship, etc" z-lib
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woelen
Super Administrator
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Mood: interested
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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 
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Lion850
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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....
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j_sum1
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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.
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arkoma
Redneck Overlord
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Strontium Nitrate.
It's fireworks season soon.....
"We believe the knowledge and cultural heritage of mankind should be accessible to all people around the world, regardless of their wealth, social
status, nationality, citizenship, etc" z-lib
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Lion850
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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?
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arkoma
Redneck Overlord
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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.
"We believe the knowledge and cultural heritage of mankind should be accessible to all people around the world, regardless of their wealth, social
status, nationality, citizenship, etc" z-lib
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karlos³
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Mood: oxazolidinic 8)
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And pound of benzoin, half liter of GAA, DCM and a few grams of NBS
Fun! 
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j_sum1
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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.
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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.
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ThePKWonder
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platinum and silver order
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.
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SWIM
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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.
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fusso
International Hazard
Posts: 1922
Registered: 23-6-2017
Location: 4 ∥ universes ahead of you
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WTF im so jealous
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woelen
Super Administrator
Posts: 7976
Registered: 20-8-2005
Location: Netherlands
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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.
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Cou
National Hazard
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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)
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AvBaeyer
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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
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arkoma
Redneck Overlord
Posts: 1761
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Location: On a Big Blue Marble hurtling through space
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1 pound of zinc dust
"We believe the knowledge and cultural heritage of mankind should be accessible to all people around the world, regardless of their wealth, social
status, nationality, citizenship, etc" z-lib
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morganbw
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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.
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dawt
Hazard to Self
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Registered: 9-5-2016
Location: EU
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Mood: fluorescent
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| 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.
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Mateo_swe
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Posts: 501
Registered: 24-8-2019
Location: Within EU
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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.
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Draeger
Hazard to Others
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Location: North-Rhine Westfalia, Germany
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Mood: Slowly getting ready for new projects
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| 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?
Collected elements:
Al, Cu, Ga, C (coal), S, Zn, Na
Collected compounds:
Inorganic:
NaOH; NaHCO3; MnCl2; MnCO3; CuSO4; FeSO4; aq. 30-33% HCl; aq. NaClO; aq. 9,5% ammonia; aq. 94-96% H2SO4; aq. 3% H2O2
Organic:
citric acid, sodium acetate, sodium citrate, petroleum, mineral oil
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Mateo_swe
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Posts: 501
Registered: 24-8-2019
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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
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