| 配方类型： |
LEATHER |
| 配方说明： |
Syntan (Synthetic Tanning Agent) (U.S. Patent 2,606,613) |
| 配方组成： |
Sulfuric Acid/700
Rosin/12
Heat for 1.5 hours at 125'C. and add at 95'C
Phenol/400
Cresol/400
Formaldehyde/675
Water/1200
\b-Naphthol/720 |
| 配制方法： |
Adjust the pH with ammonia and acetic acid. |
|
