formaldehyde - Sciencemadness Dot Org

M2
FORMALDEHYDE
is reported thai t'ur can be made waterproof by a formaldehyde treatment 32 .
The feitisg and dyeing properties of hair are improved, according to Casaburr.
by rirsr tanning the hair in a solution containing 0.2 to 0A per cent
citric acid. 1.5 to 3 per cent caustic soda, and 10 to 14 per cent formaldehyde,
then ceniriiuging and treating at 70 C C. In Midler's process 16 for dressing
and finishing furs, they are immersed in a colloidal emulsion of vr&x containing
phthalic acid and formaldehyde3 heated in contact with, the solution
until the synthetic plastic is fixed upon the fur fibers, and then brushed
and ironed.
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