| 配方类型： |
TEXTILES |
| 配方说明： |
Cloth for Preventing Tarnishing of Silver (U.S. Patent 2,480,930) |
| 配方组成： |
A: Locust-Bean Gum/6 lb.
Cook together until uniform and cool
B: Silver Nitrate/59 lb.
Solution A (Above)/60 gal.
C: Sodium Ferrocyanide/46 lb.
Solution A (Above)/60 gal.
Water/120 gal. |
| 配制方法： |
Add C to B and homogenize to a thin cream. Keep alkaline by adding a little soda ash.
Use this to impregnate flannel or other soft cloth. |
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