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Specifications

Lithopone (B301, B311)

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 Lithopone has mostly been replaced by titanium dioxide which is more durable, but it is much cheaper.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)≥
99
Zinc (as ZnS) (m/m)%≥
28
Zinc Oxide %(m/m)≤
0.6
105º C Volatile%(m/m)≤
0.3
Water Soluble%(m/m)≤
0.4
Screen residues (63um mesh) %(m/m)≤
0.1
Color (Compare with standard specimen
Better than
Clkalinity
neutral
Oil absorption g/100g≤
14
Color Killing (Compare with standard specimen) %≥
105
Covering power (contrast ratio)
Not lower than 5% standard samples
 
Items
B311
Ba+SO4 (as ZnS)%(m/m)≥
99
Zinc (as ZnS) (m/m)%≥
30
Zinc Oxide %(m/m)≤
0.3
105º C Volatile%(m/m)≤
0.3
Water Soluble%(m/m)≤
0.3
Screen residues (63um mesh) %(m/m)≤
0.1
Color (Compare with standard specimen
Better than
Clkalinity
neutral
Oil absorption g/100g≤
10
Color Killing (Compare with standard specimen) %≥
105
Covering power (contrast ratio)
Not lower than 5% standard sample