Fay, Irving W. (Irving Wetherbee), 1861-1936 · New York, D. Van Nostrand Co. · leaf 133
122 COAL-TAR DYES CHO + 206H5N(C2H5)2 = Metaoxy- Cimethylaniline yCQH^OH HC^C(5H4NfCoH5)2 benzaldehyde + HoO \C6H4N(C2H5)o M-oxytetraethyldiamino- triphenylmethane By treatment with sulphuric acid, two sulpho groups arc fixed in the molecule and the product neutrahzed to form the calcium salt: this… … Patent blue V.N. Formerly it was held that its peculiar fastness to alkali was due to the presence of the OH group, which is in a benzene ring in the meta position to the methane carbon atom; but later work has shown the improbability of this view', and from careful investigation it has been shown…
Coal-tar colors · Dyes and dyeing
Internet Archive · Getty Research Institute · Public domain (published before 1931). Free to use for anything.
