the world > matter > colour > named colours > green or greenness > green colouring matter > [noun] > pigment or dye > stains (2)
(a) a preparation used to colour objects to resemble brass; (b) a preparation of oxidized brass used to stain glass to various tints of blue and…
Dye Chemistry. Applied to a group of basic azo dyes that contain a quaternary ammonium group, often with safranine as the diazo component, and…