ZN2825 Zinc Silicate (CAS 68611-47-2)

Catalog No. ZN2825
Molecular Formula Zn2SiO4
CAS Number 68611-47-2
Appearance White powder
Purity 99.5%
Synonyms Willemite

Zinc Silicate (CAS 68611-47-2) is a white powder, with a molecular formula of Zn2SiO4 and a molecular weight of 222.84. Stanford Advanced Materials (SAM) offers high-quality Zinc Silicate.

Related products:Zinc Stearate Powder, Zinc Hydroxide Carbonate Powder, Zinc Gluconate Powder, Zinc Molybdate Powder.

Zinc Silicate Description

Zinc Silicate (CAS 68611-47-2), also known as willemite, is a mineral (Zn2SiO4) and a minor ore of zinc. It is highly fluorescent (green) under shortwave ultraviolet light. It occurs in a variety of colors in daylight, in fibrous masses, solid brown masses (troostite), and apple-green gemmy masses.

 

Zinc Silicate Specifications

Product Name

Zinc Silicate

CAS Number

68611-47-2

Molecular formula

Zn2SiO4

Molecular weight

222.84

Density

4.0 g/

Melting point

1500 °C

Solubility

< 0.1 g/l (20°C)

 

Safety Information

Symbol

 

Signal word

Warning

Hazard statements

H315-H319-H332-H335

Precautionary statements

P261-P305+P351+P338

Personal protective equipment

Eyeshields, Gloves, respirator cartridge type N100 (US), type P1 (EN143) respirator filter, type P3 (EN 143) respirator cartridges

RIDADR

UN 2722 5.1 / PGIII

WGK Germany

N/A

 

Zinc Silicate Applications

Doped with manganese-II, Zinc Silicate (CAS 68611-47-2) fluoresces with a broad white emission band. Some versions had some of the zinc replaced with beryllium. In the 1940s it was largely replaced by the second-generation halophosphors based on the fluorapatite structure. These, in turn, have been replaced by the third-generation TriPhosphors.

Nowadays, Zinc Silicate has been used for inorganic zinc-rich coatings which afford superb corrosion resistance. They are also rock hard and very abrasion-resistant. They make some of the best anti-corrosive primers available. Ethyl silicate based inorganic zincs (Galvit ES600 & Galvit ES510) should be applied at 75 microns (dft). Because they have a tendency to grip unlike most other coatings, they may be applied to the faying surfaces of bolted steel joints. Inorganic zinc-rich primers have excellent resistance to temperatures up to the melting point of zinc (above 400°C).

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