ZN2825 Zinc Silicate Powder (CAS No. 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.

INQUIRY

Zinc Silicate Powder (CAS No. 68611-47-2)

Description

Specification

Technical Data Sheet

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 These, in turn, have been replaced by the third-generation TriPhosphors.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).