Improved Zinc White.

Practical Magazine 16, 1876

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

It appears from the report of the Austrian Chemical Society, that M. ORR has found the following method effectual in producing a very beautiful zinc white. Wash sulphuret of raw barium, and mix it with the liquor obtained from equal equivalents of chlorine and sulphate of zinc. Collect the precipitate (sulphuret of zinc), press and dry it; then heat it on a hearth, and put it quite hot into cold water. This last step gives the mass great density. The product, washed and ground fine, has a coating colour of remarkable purity and whiteness.

- Technologiste, Feb. 5, 1876.

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