Specification :

Molecular formula: ZnSBaSO4
CAS Number: 1345-05-7

1) Product Name: Lithopone
2) Appearance: A white powder, non-toxic.
3) Purity: 28% , 30%
4) Place of Origin: China.
5) Manufacture for Lithopone
6) Usage: 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 Lithopone has mostly been replaced by titanium dioxide which is more durable, but it is much cheaper.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.

Packing: In 25kg polyethylene film bag with outer polypropylene woven bag. Can be palletized.

lithopone B301 B311
ZNS 28% MIN 30% MIN
ZNO 0.6% MIN 0.3% MAX
VOLATILE MATTE 0.3% MAX 0.3% MAX
MATTER SOLUBLE IN WATERE 0.4% MAX 0.3% MAX
RESIDUE ON SIEVE 63 UM 0.1% MAX 0.1% MAX
OIL ABSORPATION VALUE 14 10

Items B301
Ba+ SO4 ( as ZnS) % ( m/ m) e 99
Zinc ( as ZnS) ( m/ m) % e 28
Zinc Oxide % ( m/ m) d 0.6
105º C Volatile% ( m/ m) d 0.3
Water Soluble% ( m/ m) d 0.4
Screen residues ( 63um mesh) % ( m/ m) d 0.1
Color ( Compare with standard specimen Better than
Clkalinity neutral
Oil absorption g/ 100gd 14
Color Killing ( Compare with standard specimen) % e 105
Covering power ( contrast ratio) Not lower than 5% standard samples

Items B311
Ba+ SO4 ( as ZnS) % ( m/ m) e 99
Zinc ( as ZnS) ( m/ m) % e 30
Zinc Oxide % ( m/ m) d 0.3
105º C Volatile% ( m/ m) d 0.3
Water Soluble% ( m/ m) d 0.3
Screen residues ( 63um mesh) % ( m/ m) d 0.1
Color ( Compare with standard specimen Better than
Clkalinity neutral
Oil absorption g/ 100gd 10
Color Killing ( Compare with standard specimen) % e 105
Covering power ( contrast ratio) Not lower than 5% standard sample