LITHOPONE (ZINC SULFIDE WHITE)

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http://www.zinc.org/
Zinc sulphide ZnS mixed with barium sulphate is used as a white pigment known as lithopone. ZnS is also used as a detector of alpha-rays, which render it luminescent.  ZnS and the selenide ZnSe are used in infrared optics.  Zinc salts have various applications: zinc chloride in the textile industry, and as a scaling flux in galvanizing; zinc sulphate in agriculture and animal feed; zinc phosphate to passivate steels, etc. Organic salts of zinc are used in paints, and zinc stearate is used in the preparation of plastics as well as in powder metallurgy.

GENERAL DESCRIPTION: Lithopone is a white pigment composed of a mixture of barium sulfate (28 - 30%) and zinc sulfide (68 - 70%) 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 Lithopone has mostly been replaced by titanium dioxide which is more durable, but it is much cheaper.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.

Members of pigment white

C.I. Number

Chemical name

CAS RN

Pigment white 1

Lead hydroxide carbonate

1319-46-6

Pigment white 3

Lead sulfate

7446-14-2

Pigment white 4

Zinc oxide

1314-13-2

Pigment white 5

Lithopone

1345-05-7

Pigment white 6

Titanium dioxide

13463-67-7

Pigment white 7

Zinc sulfide

1314-98-3

Pigment white 10

Barium carbonate

513-77-9

Pigment white 11

Antimony trioxide

1309-64-4

Pigment white 12

Zirconium oxide

1314-23-4

Pigment white 14

Bismuth oxychloride

7787-59-9

Pigment white 17

Bismuth subnitrate

1304-85-4

Pigment white 18

Calcium carbonate

471-34-1

Pigment white 19

Kaolin

1332-58-7

Pigment white 21

Barium sulfate

7727-43-7

Pigment white 24

Aluminum hydroxide

21645-51-2

Pigment white 25

Calcium sulfate

7778-18-9

Pigment white 27

Silicon dioxide

7631-86-9

Pigment white 28

Calcium metasilicate

10101-39-0

Pigment white 32

Zinc phosphate cement

7779-90-0