Ultramarine Blue
Synonyms: CAS 57455-37-5, CI 77007, pigment blue 29, blue ultramarine, Ultramarine, Oriental Blue, Permanent Blue, P.Blue 29Application: It is commonly used as a colorant and optical brightener for plastics, rubber, inks, color painting, textiles, paper, cosmetics, detergents, cement and construction.
Ultramarine Blueis a saturated, semitransparent, dark, violet-leaning blue.It is composed of sodium aluminosilicate and three sulfur atoms in the form of sulfide or sulfate, the unpaired S3-anion originating from the blue. It is prepared from inexpensive modifier components such as kaolin, sodium carbonate and sulfur. Synthetic ultramarine does not show vivid blue as much as natural ultramarine, due to even particle size, diffusing light more uniformly. Synthetic dark blue can be affected by light, oil or lime. Ultramarine has heat and alkali resistant properties. It is used as a colourant and optical brightener for plastics, rubber, inks, paints, cosmetics, detergents, cement, textiles and paper.
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