Analysis of mixed paints, color pigments, and varnishes (1908)
Holley, Clifford Dyer, Ladd, Edwin Fremont, 1859-1925, joint author · New York, J. Wiley · leaf 193
e in the usual manner. 293. Mercuric sulphide (vermilion). The filtrate from the insoluble residue, if lead is absent, or the filtrate from the lead sulphate, is heated with a little sulphurous acid to reduce any iron present to the ferrous condition, made neutral with ammonia, and then just acid… … Fig. 11. hydrogen sulphide water, the crucible removed to another holder and washed with alcohol and carbon bisulphide to remove sulphur, dried in steam-oven and weighed. 294. Estimation of lead and mercury, calcium com- pounds present. The filtrate from the insoluble residue from 291 is…
Paint · Pigments · Varnish and varnishing
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