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.