[NHCOLL-L:2605] Formalin

[Chris Wolfe]

Good morning!

I noticed while perusing the new Aldrich catalog that there are several 
formaldehyde formulations available for mixing formalin solutions.  Our 
herpetology department has been using a formaldehyde solution that is 
37 wt. % in solution, and based on information in the catalog and from 
a customer service representative, our product has a 10-15% methyl 
alcohol concentration and a ~0.03% formic acid concentration.  There is 
also another formulation of formaldehyde that is described as 37 wt. % 
in water.  This formulation has a 7-8% methyl alcohol concentration and 
a ~0.008% formic acid concentration.  I was curious about this other 
formulation because with these lower concentrations of methanol and 
formic acid, I would expect it to be less acidic.  In   Does anyone 
have experience (or an opinion) with this formulation of formaldehyde?

Thanks!

Chris
___________________________________________
Christina A. Wolfe
Collection Manager, Herpetology
Sam Noble Oklahoma Museum of Natural History
University of Oklahoma
2401 Chautauqua Avenue
Norman, OK 73026

405.325.7771
405.325.7699 (fax)
www.snomnh.ou.edu
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