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Calcium Sulfide

Calcium Sulfide

Basic Information

CAS No.: 20548-54-3
Molecular Formula: CaS
Molecular Weight: 73.15

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Product Details

Calcium sulfide is slightly soluble in water but insoluble in alcohol.  It reacts with acids, producing hydrogen sulfide gas.  Calcium sulfide is pale yellow to light gray with a bitter taste.  It is hygroscopic, producing an odor of H2S in moist air.


Chemical Properties
PropertyValue

Melting point

2000 °C

Density

2.6

Refractive index

2.12

Solubility

slightly soluble in H2O; insoluble in ethanol

Form

Powder

Specific Gravity

2.5

Color

White

Water Solubility

Slightly soluble in water. Insoluble in alcohol.

Sensitive

Moisture Sensitive

Crystal Structure

NaCl type

Crystal system

Cube

Merck

14,1707

Space group

Fm3m

Lattice constant

a/nmb/nmc/ nmα/oβ/ oγ/oV/ nm30.569080.569080.569089090900.1843

CAS DataBase Reference

20548-54-3(CAS DataBase Reference)

EPA Substance Registry System

Calcium sulfide (CaS) (20548-54-3)


Safety Information

PropertyValue

Hazard Codes

Xi,N

Risk Statements

31-36/37/38-50

Safety Statements

28-61

RIDADR

UN 3179 4.1/PG 2

WGK Germany

2

TSCA

Yes

HazardClass

4.3

PackingGroup

III



Product Usage

Calcium Sulfide is a versatile inorganic compound that holds a significant position in fine chemicals and specialized industries. In the coatings and plastics industry, due to its unique luminescent properties, it is frequently used as a base material for manufacturing fluorescent paints, luminous powders, and glow-in-the-dark plastics. In the metallurgical industry, it acts as an efficient purifying agent for the precipitation and recovery of heavy metals from wastewater, showing remarkable effectiveness in removing mercury and lead. Additionally, it is utilized as a depilatory agent in leather processing and as a raw material for certain pesticides in agriculture. In recent years, with the advancement of material science, its research and application in optoelectronic materials and the semiconductor field have become increasingly widespread.

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