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化學(xué)配方數(shù)據(jù)庫
配方類型： LEATHER
配方說明： Syntan (Synthetic Tanning Agent) (French Patent 900,655)
配方組成： Oxalic Acid/1
Phenol/94
Reflux for 45 minutes while stirring. Heat in vacuum at 75C. Then
add slowly
Sulfuric Acid H2O/50
30% Formaldehyde/70
配制方法： at 50 to 60C. and heat in vacuum at 70 to 75C. for 2 hours until completely water soluble. Neutralize with alkali and adjust with an organic acid to a pH of 3 to 4.

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