hodges - 3-9-2007 at 13:11
I just happened to see this today:
http://cgi.ebay.com/Nitric-Acid-65-manufacture-kit-500ml_W0Q...
Hodges
Xenoid - 3-9-2007 at 13:43
As stated, it's a marketing ploy and a way of getting around Ebay regulations.
The "kit" comprises a bottle and you simply pour your nitric acid out of it, what could be simpler!
Regards, Xenoid
chief - 8-9-2007 at 05:36
Nothing is wrong, but it seems to be about selling the gallon for the price of 1.5 liters.
tito-o-mac - 10-9-2007 at 04:50
If you actualy click on the seller, you should see "Trinity Lab Chemicals" and a whole list of chemicals available. Sounds interesting.
Also check this "DIY-PYRO" how to make nitric acid http://cgi.ebay.com/DIY-Pyro-Make-Your-Own-Nitric-Acid_W0QQi...
BTW what is the usual price of nitric acid?
[Edited on 10-9-2007 by tito-o-mac]
Sauron - 10-9-2007 at 05:04
If I understand correctly the seller is evading eBay rules, so the way it works on eBay is that some OTHER seller who is jealous will report this
seller and get his ad pulled or him banned.
chief - 11-9-2007 at 08:50
Usual price for nitric acid: I pay less than 1 EUR/liter (52-53 %)
chief - 11-9-2007 at 09:25
I might like to make the following statement here:
Nitric acid is produced from coal, water and air. The coal is by far the most expensive of the ingerdients . Also the procedure is quite simple, and
the production very large scale.
The price is therefore that of the coal + some percentage. Even beer is more expensive to manufacture than nitric acid .
undead_alchemist - 15-9-2007 at 23:49
Well the list prices that I have in front of me right now are:
68/70% ACS Grade
500ml $22.80
2.5L $39.00
Sauron - 16-9-2007 at 00:43
chief is talking about a technical grade 52-55% so it's hard to compare to 68% ACS reagent grade, the issue is not just one of % but of purity.
It's like pricing muriatic acid vs ACS grade HCl or battery acid vs ACS grade H2SO4.
Or Rustoleum vs ACS grad 85% phosphoric acid.
Sometimes the difference is important.
Fleaker - 16-9-2007 at 09:06
Ah but cheap nitric and cheap concentrated sulfuric can be used to make high quality nitric which can then be diluted to any concentration.
chief - 24-9-2007 at 22:07
Besides: In a factory they usually produce just one sort of a chemical, which is labeled differently afterwards. The main difference is the handling:
My technical grade is just filled into re-use canisters, that might contain a milligram of impurity while the reagent-grade gets it's own bottle.
Anyhow I don't believe they manufacture 3 sorts of nitric, because the one they make is probably pure enough for reagent purposes already.
I had an similar issue with argon-gas for lasers: "High-grade" (99.995 %) comes in canisters of about 1 liter, mildly compressed (several bar) for a
total volume at normal pressure of about 5 liters.
The welding-shop-stuff comes in a large gas-bottle, 150 bar, total volume about 2 m^2, and: it is labeled even purer than the "special" stuff.
Now the prices: "special", low volume: about 100 EUR (about same as $),
"welding-grade", large quantity also about 100 EUR, including the gas-bottle.
Result: the one coasts 100 times that of the other, but is not better.
chief - 24-9-2007 at 22:45
Differences in the grades anyhow may arise when the chemicals are made via crystallization, when then higher grade is beeing washed and recrystallized
more often.