A Black Mordant on Wood.

Practical Magazine 15, 1876

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

According to Herr LAUBER, a black mordant on wood may be thus obtained: Dissolve a sufficient quantity of logwood in hot water to make the solution reach 10° by Beaumé's aérometer, mix 5 litres (rather more than a gallon) of this solution with 2½ litres (rather more than half-a-gallon) of wood-acetate of iron 11° Beaumé, and half-a-litre (rather more than three-quarters of a pint) of acetic acid 2° Beaumé, and warm the whole for about a quarter of an hour, after which the mordant will be fit for use. It is used cold, and for compact wood must be further diluted with water.

- Gewerbehalle.

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