| 配方类型： |
METAL TREATMENTS |
| 配方说明： |
decorative designs can be etched on silver with
chlorine free nitric acid. for matt effects, use the
acid at 24? be. another mordant for silver is: |
| 配方组成： |
hydrochloric acid/1
water/12
nitric acid/1 |
| 配制方法： |
mix all ingredients together.
NOTE: other suggested etching agents for silver are chromic acid or the analogous mixture of potassium bichromate with sulfuric or nitric acid, or a mixture of dilute sulfuric acid with potassium permanganate. |
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