| 配方类型： |
METALS AND THEIR TREATMENT |
| 配方说明： |
Silver Coin Cleaner |
| 配方组成： |
Acetone/60 cc
Strong Solution of Ammonia/120 cc
Oleic Acid/30 cc
Dissolve the oleic acid in the strong ammonia solution and add 500
cc of water, then the acetone and enough water to make 1000 cc. To this
solution ad
Ammonium Chloride/150 g
Water to make/1000 cc |
| 配制方法： |
The articles to be cleaned are first dipped in the cleansing solution, then in benzene or naphtha, afterwards they are dried, preferably in sawdust. |
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