Application of dyestuffs to textiles, paper, leather and other materials (1920)
Matthews, J. Merritt (Joseph Merritt), 1874-1931 · New York, Wiley · leaf 493
idor solid) are known as Logwood Extract or as Hematine Extract.The sohd hematine extracts are usually known as Hematine Crystals.A good Logwood extract will show about 20 per cent oxidation; that is tosay, about 20 per cent of the hematoxylin has been converted into hematine.On the other hand, a… … //Z77^. Fig. 245.—Open Width Dyeing M-achine for Log^^ood. (Haubold.) sometimes difficult to tell from a dyeing test that the Logwood is weaker,owing to the tannin giving a black color with the iron mordant used in thedjeing of the cotton, and also on account of the coloring matter of thechestnut…
Dyes and dyeing · Textile fabrics
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