On Feb 17, 2018, at 7:54 AM, Monona Rossol <0000030664c37427-dmarc-request**At_Symbol_Here**LISTS.PRINCETON.EDU> wrote:

I was so tired and frustrated when I asked for a dilute HAc source last night.  I should have been more precise.  

Someone already suggested vinegar. I usually suggest vinegar to colleges and schools where the use is small and its student work.  But this is a professional studio doing extremely high quality work, often for major artists.  They don't want any contamination with other trace chemicals and need an exact concentration of HAc.   But while these are professional artists, they sure aren't lab-trained chemists.  

And they mix up a fresh solution almost every day so the it would mean they would need a gallon bottle of vinegar every couple of days.  And I really don't want a bottle of glacial being handled every day in this studio.

A secondary issue is they will already have the limit of 3 large flammable storage cabinets and be only about 20 gallons under the OSHA 120 gallon limit for combined Category 2,3,& 4 solvents storage allowed in their fire area. 

I'll be happy if I can just find a source diluted enough to store in an acid cabinet and give them a little less chance of injury.  The eye wash and shower will be right next to where this is done.  

Oh, and Kodak sells a stop bath solution that is ~80 %, but it is very expensive and full of additives they don't want.

Monona Rossol, M.S., M.F.A., Industrial Hygienist

President:  Arts, Crafts & Theater Safety, Inc.

Safety Officer: Local USA829, IATSE

181 Thompson St., #23

New York, NY 10012     212-777-0062

actsnyc**At_Symbol_Here**cs.com   www.artscraftstheatersafety.org

 

-----Original Message-----
From: DCHAS Membership Chair <membership**At_Symbol_Here**DCHAS.ORG>
To: DCHAS-L <DCHAS-L**At_Symbol_Here**PRINCETON.EDU>
Sent: Sat, Feb 17, 2018 6:29 am
Subject: [DCHAS-L] dilute acetic acid source?

From: Monona Rossol <actsnyc**At_Symbol_Here**cs.com>
Subject: dilute acetic acid source

I need a source of acetic acid that is not in glacial form and both flammable and corrosive. It is used in photography and in various printmaking processes and usually at a 1:20 dilution. I can't have artists who don't even have fume hoods working with the glacial stuff.

Sigma had an 80% form that is not flammable but it is discontinued. Even a lower dilution would be good. Thanks guys.


Monona Rossol, M.S., M.F.A., Industrial Hygienist
President: Arts, Crafts & Theater Safety, Inc.
Safety Officer: Local USA829, IATSE
181 Thompson St., #23
New York, NY 10012 212-777-0062
actsnyc**At_Symbol_Here**cs.com www.artscraftstheatersafety.org

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