tannate

[ tan-eyt ]

noun

, Chemistry.

1. a salt of tannic acid.

tannate

/ ˈtæneɪt /

noun

1. any salt or ester of tannic acid

Word History and Origins

Origin of tannate¹

First recorded in 1795–1805; tann(in) + -ate ²

Example Sentences

Another method of mordanting cotton is to fix the metallic salt on the fibre as a tannate instead of an oleate.

From Project Gutenberg

The cotton is then worked in a solution of tartar emetic or stannic chloride, so that the tannic acid absorbed by the fibre may be fixed upon it as insoluble tannate of antimony or tin.

From Project Gutenberg

Although the tannic acid is thus united with metallic oxide, it still has the power of attracting the base of the colouring matter, and there is fixed upon the fibre an insoluble colour-lake, namely, a tannate of antimony and colour-base, which constitutes the dye.

From Project Gutenberg

It is interesting to note that whether the metallic oxide is united with the substance of the fibre, as in the case of wool and silk, or precipitated as a tannate, oleate, silicate, &c., as in the case of cotton or silk, it still has the power of combining with the colouring matter in the dyebath to form the coloured “lake” or dye on the material.

From Project Gutenberg

The caffein tannate of tea is precipitated by weak acids, and the presumption is that it is precipitated by the gastric juice and, therefore, the caffein is probably not absorbed until it reaches the alkaline alimentary tract.

From Project Gutenberg