What is colorant?

Some articles on colorant, colorants:

Coloroid
... or material color components of pure hue or pure colorant (p), white colorant (w) and black colorant (s) in relative proportions whose sum must always equal 1 ... Implicitly, p may be any matching single "spot" colorant or matching mixture of two "primary" colorants.) The Coloroid technical documentation defines the conceptual equations necessary to transform the Coloroid ... These stimulus attributes in turn must be standardized or gamut mapped into a specific colorant system or color reproduction technology in order to ...
Iron(II) Sulfate - Uses - Colorant
... Two different methods for the direct application of indigo dye were developed in England in the eighteenth century and remained in use well into the nineteenth century ... One of these, known as china blue, involved iron(II) sulfate ...
UV-visible Spectrophotometry
... curves can be used to test a new batch of colorant to check if it makes a match to specifications, e.g ... Traditional visible region spectrophotometers cannot detect if a colorant or the base material has fluorescence ... Where a colorant contains fluorescence, a bi-spectral fluorescent spectrophotometer is used ...
Pyrotechnic Colorant
... A pyrotechnic colorant is a chemical compound which causes a flame to burn with a particular color ... temperature-decreasing additives, the limit of colorant may be about 10–20 wt.% of the composition ... Very effective colorant, can be used in small amounts ...
Pyrotechnic Composition - Materials Used - Oxidizers
... Uncommon in fireworks creates hot flame, enhances barium, strontium and copper colorants by acting as a chlorine donor ... Barium chlorate – also serves as a green colorant in fireworks sensitive, better to avoid ... Very good green colorant, even in lower-temperature flames ...