lithopone

CAS NO.: 1345-05-7

Appearance: White Powder

Specification:

Item	Standard
	B301	B311
Ba+SO4 (as ZnS)% (m/m)	99 min	99 min
Zinc (as ZnS) (m/m)%	28 min	30 min
Zinc Oxide %(m/m)	0.6 max	0.3 max
105Deg.C. Volatile%(m/m)	0.3 max	0.3 max
Water Soluble%(m/m)	0.4 max	0.3 max
Screen residues (63um mesh) %(m/m)	0.1 max	0.1 max
Oil absorption g/100g	14 max	10 max
Color Killing (Compare with standard specimen) %	105 min	105 min

Lithopone is a white pigment composed of a mixture of barium sulfate (68 - 70 %) and zinc sulfide (28 - 30%) with trace amounts of zinc oxide. It is produced by precipitation through filtering, heating and quenching works. Lithopone has mostly been replaced by titanium dioxide which is more durable, but it is much cheaper. It is used as a base for lake pigment and used as a inert pigment for paint, ink and cosmetics as well as in a large range of applications in plastic industry. It is used as a filler in paper, leather, and linoleum.