Re: A very interesting little tidbit here is the sublimation temperature of OA. Evidently it begins sublimating at 157ºF and begins decomposing at higher temperatures. They say at temperatures above 189.5ºF, it begins decomposing into formic acid, carbon dioxide, carbon monoxide, and water ….
The site at http://www.inchem.org/documents/icsc/icsc/eics0529.htm says “Formula: C2H2O4 / (COOH)2
Molecular mass: 90.0
Decomposes: see Notes.
Melting point: 189.5°C
Optimal sublimation temperature is 157 °C. At higher temperatures it partly decomposes.”
189.5C = ~314.6 F
Cheers,
Dave…..
Dave Pehling, Zoologist
WSU Extension Snohomish Co. (ret.)
600 128th St. SE
Everett, WA. 98208
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