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peach
Bon Vivant
Posts: 1428
Registered: 14-11-2008
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Mood: No Mood
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More seriously, my last lab order was;
HCl
DCM
Mercury Chloride
Sodium Nitrite
Thio urea
AlCl3
And from a less 'labby' related supplier;
PTC
I hate ordering from suppliers, it seems to take all the fun out of it. It's all about the total synthesis and inventiveness for me; turning everyday
things into something amazing. I do LOVE the colors the guys interested in dyes come out with on here, they're beautiful.
[Edited on 1-5-2010 by peach]
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peach
Bon Vivant
Posts: 1428
Registered: 14-11-2008
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Mood: No Mood
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I'm also genuinely interested in the potential of lysergides to alleviate headaches. I get them on such a regular basis that I can predict the hours
when they'll turn up. I've tried everything to get rid of them, normal pain killers and the special ibuprofen, codeine, paracetamol power trio,
changing the lighting in my house to SAD bulbs, drinking more water, less water, cutting anything artificial out of my diet, cutting caffeine, sugar
and carbohydrates out and all kinds of stuff, like changing my diet altogether or exercising until I've thrown up from exhaustion and overheating.
Nothing competes with lysergides for getting rid of the annoying bastards.
[Edited on 1-5-2010 by peach]
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Mildronate
Hazard to Others
Posts: 428
Registered: 12-9-2009
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Mood: Ruido sintetico
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My new bromine, litlle bit of sulfuric, AlCl3 and potasium bromide
[Edited on 9-5-2010 by Mildronate]
[Edited on 9-5-2010 by Mildronate]
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majortom
Harmless
Posts: 26
Registered: 8-5-2010
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Wow, thionyl chloride and sodium metal? Suspicious....
Either way very usefull chemicals for organic synth in general, its too bad they are so hard to get now.
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Globey
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Quote: Originally posted by Kaifas  | Sodium salts dissolves much better than potassium salts so it is reason to use both potassium and sodium. I use oxidizers to do some Copper perclorate
(binds strongly to nitrogen bases) and copper(III) compounds and making different copper complexes . Copper(I)cyanade goes to Gillman reagents.
Copper(II)chloride is starting material to do Glacer couplings. Copper powder goes to Ullman coupling reactions.
Sodium nitrate is exellent for mild nitration systems because of good solubility.
It is difficult to byu chemicals here too. |
Wow, I guess I was taught wrong. I ALWAYS thought the potassium salts were more expensive, and more desirable and more expensive than the sodium
salts. Plus in many instances, the potassium salts are not deliquescent (as the sodium salts are). WOW, guess I learned the wrong way? How could
that be? Like saltpeter (KNO3) always has seemed by far more valuable than NaNO3 (Chile Saltpeter) to me. Please someone, I'm pretty sure I am
correct here...can anyone jump to my defense?
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woelen
Super Administrator
Posts: 7977
Registered: 20-8-2005
Location: Netherlands
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Mood: interested
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It all depends on intended use. If you want a nitrate as an oxidizer in fireworks, then it is important to have a non-hygroscopic salt. Potassium
nitrate is good for that. If you want some reaction with nitrate in aqueous solution at high concentration, then you want a highly soluble salt. For
this purpose, sodium nitrate is more suitable.
The difference is much more pronounced with sodium perchlorate and potassium perchlorate. Sodium perchlorate is highly soluble, but also extremely
hygroscopic (it even is deliquescent). Potassium perchlorate on the other hand is a perfectly dry non-hygroscopic solid, but it also is hardly soluble
in cold water. So, making other perchlorate salts from potassium perchlorate hardly is possible.
In general one can state that potassium salts are somewhat more expensive (potassium is more valuable than sodium), but this only is true when the
counterion is not very special and preparation of both the sodium and potassium salt has comparable complexity. For sodium nitrate and potassium
nitrate this is the case. However, for potassium perchlorate and sodium perchlorate this is quite different. It is hard to obtain sodium perchlorate
at high purity due to its high solubility and bad crystallizing properties, while it is very easy to purify potassium perchlorate. Hence, pure
potassium perchlorate is less expensive than pure sodium perchlorate.
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unionised
International Hazard
Posts: 5102
Registered: 1-11-2003
Location: UK
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Mood: No Mood
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Not strictly an order but I did get our purchasing people to find a supplier
Nonanitro
m terphenyl.
An odd compound with a pretty structure- looks like three trinitrobenzenes stuck together
Didn't order it; the customer for the analysis changed their mind when they saw the lead-time to import it.
[Edited on 24-5-10 by unionised]
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mr.crow
National Hazard
Posts: 884
Registered: 9-9-2009
Location: Canada
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Mood: 0xFF
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Hmmm the whole sodium/potassium thing is pretty interesting. I was helping out with some science demos at the University and all we could find were
sodium salts. It also produces the ugly orange flames instead of lovely purple.
Speaking of which I made some KNO3 out of a cold pack and no-salt, thats sort of a acquisition. I already have lab grade and didn't want to waste it.
Double, double toil and trouble; Fire burn, and caldron bubble
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Magpie
lab constructor
Posts: 5939
Registered: 1-11-2003
Location: USA
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Mood: Chemistry: the subtle science.
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Yes. Can anyone tell me why soap bars are made using NaOH whereas liquid handsoap is made using KOH?
The single most important condition for a successful synthesis is good mixing - Nicodem
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hissingnoise
International Hazard
Posts: 3940
Registered: 26-12-2002
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Mood: Pulverulescent!
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NaOH makes solid soap and KOH makes a more liquid soap but why those bases react differently with the acids used in soap is another question. . .
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unionised
International Hazard
Posts: 5102
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Location: UK
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OK, I realise that my post wasn't strictly an order, but WTF does liquid soap have to do with the topic?
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Magpie
lab constructor
Posts: 5939
Registered: 1-11-2003
Location: USA
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Mood: Chemistry: the subtle science.
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I don't like tangents either. My bad. 
The single most important condition for a successful synthesis is good mixing - Nicodem
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Chainhit222
Hazard to Others
Posts: 138
Registered: 22-8-2009
Location: peach's mailbox
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Mood: grignard failing to start
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I love tangents and normal lines!
http://img241.imageshack.us/img241/8913/glassorder.jpg
I used simplegpt,crowngpt,cashrocketgpt and some other gpt website to pay for it 
and that's a four necked flask from expediglass.com, its hard to see one of the necks. It seems to be of a high quality.
[Edited on 27-5-2010 by Chainhit222]
The practice of storing bottles of milk or beer in laboratory refrigerators is to be strongly condemned encouraged
-Vogels Textbook of Practical Organic Chemistry
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alibabaregis
Harmless
Posts: 5
Registered: 22-1-2010
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Red Phosphorus 500g
Metal Lithium 10g
Metal Calcium 2g
[Edited on 30-5-2010 by alibabaregis]
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JohnWW
International Hazard
Posts: 2849
Registered: 27-7-2004
Location: New Zealand
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Where did you buy all that red P, Alibabaregis? You should be able to do a large number of interesting organic reactions with it.
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alibabaregis
Harmless
Posts: 5
Registered: 22-1-2010
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In a chemical supply store. Approx. Eur 100,00. In my country red P sale is not forbidden, only controlled by Federal Police. They do not care for
small quantities.
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Skyjumper
Hazard to Self
Posts: 93
Registered: 1-3-2010
Location: Assachusetts
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Mood: Refluxing
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Threw in some potassium hydroxide (500grams)
some more 500ml 30% H2O2
Some Urea
and KNO3.
The lab I work from has about 4 storage cabinets filled with everything imaginable (except what I need...)
Why someone felt the need to order at least 10kg of NaOH is beyond me. (I work and play in a highschool setting (: )
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Sandmeyer
National Hazard
Posts: 784
Registered: 9-1-2005
Location: Internet
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Mood: abbastanza bene
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No need to do either, you can get it at your local petrol station...
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majortom
Harmless
Posts: 26
Registered: 8-5-2010
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| Quote: Originally posted by Globey | | Quote: Originally posted by Kaifas | Sodium salts dissolves much better than potassium salts so it is reason to use both potassium and sodium. I use oxidizers to do some Copper perclorate
(binds strongly to nitrogen bases) and copper(III) compounds and making different copper complexes . Copper(I)cyanade goes to Gillman reagents.
Copper(II)chloride is starting material to do Glacer couplings. Copper powder goes to Ullman coupling reactions.
Sodium nitrate is exellent for mild nitration systems because of good solubility.
It is difficult to byu chemicals here too. |
Wow, I guess I was taught wrong. I ALWAYS thought the potassium salts were more expensive, and more desirable and more expensive than the sodium
salts. Plus in many instances, the potassium salts are not deliquescent (as the sodium salts are). WOW, guess I learned the wrong way? How could
that be? Like saltpeter (KNO3) always has seemed by far more valuable than NaNO3 (Chile Saltpeter) to me. Please someone, I'm pretty sure I am
correct here...can anyone jump to my defense? |
Sorry, it is what you can get it in, if the industry uses K for some reason I use K becasue it is all I can get. With all this meth craziness going on
I make my own iodine from cheap pottaium iodide off of ebay and some HCL, then you mix it with a bit of H2O2 and out pops your iodine in crystaline
powder.
I buy calcium hypochlorite as it is cheaper than sodium hypochlorite as I can get it from pool suppliers and it has a higher hypochlorite to weight
ratio.
It all depends but sometimes chemicals are produced in K salt form just because that is the way it has always been done in industry.
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mnick12
Hazard to Others
Posts: 404
Registered: 30-12-2009
Location: In the lab w/ Dr. Evil
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Mood: devious
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My latest order was only one thing, but it is one very cool thing.
250gr of 5-aminotetrazole monohydrate.
And some toluene from the hardware store, but that is not an order.
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mewrox99
Hazard to Others
Posts: 321
Registered: 7-6-2010
Location: New Zealand
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Nothing special.
Just some Barium Nitrate and Potassium Permanganate
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mr.crow
National Hazard
Posts: 884
Registered: 9-9-2009
Location: Canada
Member Is Offline
Mood: 0xFF
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I found a 3kg container of NaOH at a hardware store. You should move to Canada 
Double, double toil and trouble; Fire burn, and caldron bubble
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mewrox99
Hazard to Others
Posts: 321
Registered: 7-6-2010
Location: New Zealand
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Ordered 500g of Sodium Acetate for only $4. Thats cheaper than making it from baking soda and vinegar!
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mnick12
Hazard to Others
Posts: 404
Registered: 30-12-2009
Location: In the lab w/ Dr. Evil
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Mood: devious
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My last order was:
benzene 500ml
DCM 500ml
KBr 500gr
DMF 250ml
phthalic anhydride 500gr
ammonium hydroxide 30%-500ml
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Magpie
lab constructor
Posts: 5939
Registered: 1-11-2003
Location: USA
Member Is Offline
Mood: Chemistry: the subtle science.
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| Quote: Originally posted by mnick12 | My last order was:
benzene 500ml
DCM 500ml
KBr 500gr
DMF 250ml
phthalic anhydride 500gr
ammonium hydroxide 30%-500ml |
When you receive your phthalic anhydride please determine its melting point. I've received this from two different suppliers getting phthalic acid
instead.
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