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Previous by Date: Subject: Re: [DCHAS-L] dilute acetic acid source? Date: Saturday, February 17, 2018 at 10:35:45 AM Author: Kristi Ohr <kohr**At_Symbol_Here**UMASS.EDU>

Next by Date: Subject: Re: [DCHAS-L] dilute acetic acid source? Date: Sat, 17 Feb 2018 16:50:00 +0000 Author: DAVID Katz

I found two 56% products that are certified.

At Fisher Scientific: LC103104 - My contract price is $63.18 for 4 L.
At VWR: RC140.5-1 - My contract price on this one is $91.47

These may be a good ones, but you did not mention what percent they are diluting to so the 25% may be too low.å They are not certified so the percent may be more variable.å They also come in 25 L quantities, but likely you don't want them dealing with that volume.

At Fisher Scientific: AC456850050 25%å - My price is $22.19 for 5 L
At Fisher Scientific: AC456860050 80% - My price is $22.13 for 5 L

Sammye

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

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

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.å 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.å

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.å The eye wash and shower will be right next to where this is done.å å

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:å Arts, Crafts & Theater Safety, Inc.

Safety Officer: Local USA829, IATSE

181 Thompson St., #23

New York, NY 10012å å å å 212-777-0062

actsnyc**At_Symbol_Here**cs.comå å å www.artscraftstheatersafety.org

å

-----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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