Ultramarine Blue

Ultramarine Blue
Pigment Blue 29

C.I.No.: 77007

Cas No.: 57455-37-5

Molecular Formula: Na₆Al₄Si₆S₄O₂₀

 

Ultramarine blue is one of the excellent inorganic blue pigments, which is consisting of a double silicate of aluminum and sodium with sulfide and occurs in nature as a component of the semi-precious stone, lapis lazuli. It has high tinting strength, and good weather and alkali resistance. 

 

Application: it can be used in paint, ink rubber, printing, plastics, paper products and dyes for the textile industry.

 

Specification:

 

Items	Grade
	462#	463#	464#	4808	4809
Appearance	Blue Powder
Tinting Strength %	1005%
Water Soluble Matter % Max.	1.0	0.5	0.5	0.3	0.3
Free Sulphur % Max.	0.3	0.10	0.1	0.05	0.05
Moisture (105)% Max.	1.0	1.0	1.0	0.5	0.5
Residue (325 holes Mesh) % Max.	0.30	0.10	0.10	0.05	0.05
Oil Absorption %	25-45
PH Value	6.5-7
Similar to Abroad brand	----	----	---	RS-08	EP-19