Re: [CH] 20% vinegar

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Mary:

You need to specify the correct grade.
Reagent grade glacial acetic acid should be as pure (or purer) than a "food
grade". You can get it from any laboratory supply dealer.

In adition to reagent grade glacial acetic acid, Fisher Scientific sells 20%
acetic acid. The purity is not specified, but is traceable to NIST. I would
guess it's probably as good as "food grade". You can find out by calling
them at 1*800-*766-7000. They have branches all over North America.

Acetic Acid, 20% v/v
4 liter:  cat no LC10210-4, $28.70
20 liter: cat no LC10210-5, $89.50

As previous noted, this material is dangerous to work with. Protective
clothing, eye protection and good ventilation is recommended.

Contact me off-line if you want more information.

Mark
MARK.GELO@worldnet.att.net
Concord, Massachusetts

-----Original Message-----
From: Brad Lewis <bal99@jane.penn.com>

>>
>I'd be really careful about using Acetic Acid. Most chemicals from
>chemical supply houses are NOT food grade
[snip]

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