Exposed to gases and especially oxygen they will fade too, like most dye colorants.
They used that discovery to experiment with pigment colorants for print production.
Fire artists use various fuels and colorants to achieve desired effects.
Pigments and dyes are largely used as colorants.
Historical records show that injuries, even deaths, resulted from tainted colorants.
Changes in liver and kidney histopathological structure and increases in white blood cell count indicated that inflammation is specific to certain colorants.
If a dielectric material does not include light-absorbent additive molecules (pigments, dyes, colorants), it is usually transparent to the spectrum of visible light.
By the late 1920s new colorants had been developed that were very enticing to the printing industry.
