A Gold Varnish.

Practical Magazine 17, 1876

(Chemistry applied to the Arts, Manufactures, &c.
Dyeing, Calico Printing, Bleaching, Tanning, and Allied Subjects.)

Researches made by M. KAYSER, of Nuremberg, have shown that a gold varnish, distinguished both by its hardness and beautiful colour, may be obtained by the use of picric and boracic acid. A very pure solution of gum lac should be mixed with picric acid and about half per cent. of crystallized boracic acid, the two acids having been previously dissolved in alcohol. In this way a gold varnish may be prepared, possessing all the advantages of those that are met with in commerce.

- Technologiste, March 18, 1876.

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