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Calcium metasilicate

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Calcium metasilicate Basic information

Product Name:
Calcium metasilicate
Synonyms:
  • Aedelforsite
  • cab-o-lite
  • dab-o-litep4
  • fw200(mineral)
  • fw200[mineral]
  • fw325
  • fw50
  • gilbertite
CAS:
13983-17-0
MF:
CaO3Si
MW:
116.16
EINECS:
237-772-5
Mol File:
13983-17-0.mol
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Calcium metasilicate Chemical Properties

Melting point:
1540°C
Density 
2,9 g/cm3
refractive index 
1.62-1.64
Stability:
Stable.
IARC
3 (Vol. Sup 7, 68) 1997
EPA Substance Registry System
Wollastonite (13983-17-0)
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Safety Information

Hazard Codes 
Xi
Risk Statements 
36/37
Safety Statements 
22-37/39-26
TSCA 
Yes
Hazardous Substances Data
13983-17-0(Hazardous Substances Data)

MSDS

  • Language:English Provider:ALFA
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Calcium metasilicate Usage And Synthesis

Description

“Wollastonite” occurs as a calcium inosilicate mineral that may contain small amounts of Fe, Mg and Mn substituting for calcium.
The manufactured salt is usually white. It forms within the earth when impure limestone is subjected to high temperature and pressure, sometimes in the presence of silica-bearing fluids as in metamorphic rocks. It is named after the English chemist and mineralogist William Wollaston (1766– 1828).
Wollastonite crystallizes as a triclinic crystal with the space group, 1, and the lattice constants: a = 7.94? , b = 7.32 ? , c = 7.07 ? ; α= 90.03°, β = 95.37°, γ = 103.43° and six formula units per cell.

Chemical Properties

White to brown, red, gray, yellow solid; vitreous to pearly luster. Mohs hardness 4.5–5.

Physical properties

Wollastonite occurs as bladed crystal masses, single crystals can show an acicular particle shape and usually it exhibits a white color, but sometimes cream, gray or very pale green. The melting point of wollastonite is about 1540°C.

Uses

Wollastonite is used primarily in ceramics, friction products (brakes and clutches), metalmaking, paint filler, and plastics.

Uses

Ceramics; paint extender; welding rod coatings; rubber filler; silica gels; paper coating; filler in plastics, cements, and wallboard; mineral wool; soil conditioner.

Definition

A natural calcium silicate found in metamorphic rocks.

Production Methods

Wollastonite is a natural calcium silicate that typically occurs in deposits with other silicate minerals. When crushed, it tends to cleave into particles that have length to diameter ratios of 7 or 8 to 1. Fibrous forms of wollastonite are not uncommon.

General Description

White or slightly cream-colored powder. pH (aqueous slurry) 8.0 to 10.0.

Air & Water Reactions

Insoluble in water.

Reactivity Profile

These substances undergo chemical reactions only under relatively severe circumstances or in the presence of an effective catalyst that promotes reaction. They are resistant to ignition, although they may become flammable at very high temperatures. They will be resistant to oxidation/reduction, except in the most severe conditions. These materials may be nontoxic.

Hazard

Questionable carcinogen

Fire Hazard

Flash point data for CALCIUM SILICATE are not available; however, CALCIUM SILICATE is probably nonflammable.

Calcium metasilicate Preparation Products And Raw materials

Raw materials

Calcium carbonateSilicon dioxide

Calcium metasilicateSupplier

Meryer (Shanghai) Chemical Technology Co., Ltd.
Tel
4006608290; 18621169109
Email
market03@meryer.com
Beijing HuaMeiHuLiBiological Chemical
Tel
010-56205725
Email
waley188@sohu.com
Shanghai Macklin Biochemical Co.,Ltd.
Tel
15221275939 15221275939
Email
shenlinxing@macklin.cn
Hubei Jusheng Technology Co.,Ltd
Tel
027-59599241 18871490274
Email
1400878000@qq.com
Chizhou Kailong Import and Export Trade Co., Ltd.
Tel
Email
xg01_gj@163.com
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