Dutch
- kleurstof (Een kleurstof is een stof om aan producten een kleur te geven.)
English
- colorant
- dye
- colouring matter
- colouring/coloring (something used to give colour/color)
- pigment (any substance used for colouring/coloring, making paint, etc.)
Difference between dyes and pigments
A dye is a coloured substance that chemically bonds to the substrate to which it is being applied. This distinguishes dyes from pigments which do not chemically bind to the material they colour. Dye is generally applied in an aqueous solution, and may require a mordant to improve the fastness of the dye on the fiber. (https://en.wikipedia.org/wiki/Dye)