Ultramarine is the most common blue inorganic pigment. It is compound with sulfur of aluminum silicate, having vivid lustre and pure colour.
Molecular formula
Na6Al4Si6S4O20
Characteristic
* Excellent Thermostability
* Excellent Light Fastness
* Untransferable
* Easy to Scatter
* Safe and Poisonless
Scope of Application:
* Tinting: Applied to Paint, Ink, Spray, Rubber, Plastic, Arts pigment, Cosmetics, etc. And MAINLY APPLIED TO INDUSTRIES OF ARCHITECTURAL COATING, PLASTIC, RUBBER, PAINT AND SO ON
* Whitening: Ultramarine can remove yellow colour contained in white materials.
* Mix colours: Ultramarine can make black or grey have soft lustre.

* Index of Technology
Index Name Index
Colour (Compared with standard sample) Conform to standard sample
Tinting Strength (Compared with standard sample) 100+1
Solute in Water % ≤ 0.5
Free Sulfur % ≤ 0.1
Moisture (100+2 Centigrade) % ≤ 1.5
Sieve Residue(325 mesh) % ≤ 0.1
Oil Absorption % 25-45
Organic Tinting Material None
Thermostability 250 Centigrade-300 Centigrade
pH Value 7.5-8