Note 173 — Chapter XXV · DYES AND DYEING.

1 of caustic soda in 10-15 of water, boiled with 8 of stearic acid till clear, cooled to 25° C. and diluted with 400-800 water, with constant stirring, till the white jelly of suitable consistence is obtained. Somewhat similar, but harder preparations may be made with waxes, or fatty acids still higher than stearic.

[174] 5 parts of shellac digested warm with 100 water and 3 of ammonia fort., or 1 of borax. If the solution is used as a “seasoning” for glazing, the waxy matter which separates on standing should be mixed by shaking before use. As a varnish, a stronger solution should be used and the wax skimmed off.