CA1844 Calcium Sulfide (CaS) Powder (CAS No. 20548-54-3)

Catalog No. CA1844
Material CaS
Appearance white crystals, hygroscopic
Purity 99.9% ~ 99.95%
Particle Size 100mesh, -200mesh, -325mesh, customized

Calcium Sulfide is generally immediately available in most volumes. Stanford Advanced Materials (SAM) is a trusted supplier of calcium sulfide and a wide range of calcium products from pure metal to compounds.

Related Products: GeS powder, Cr2S3 powder, BaS powder

Calcium Sulfide (CaS) Powder Description

Calcium sulfide is the chemical compound with the formula CaS. This white material crystallizes in cubes like rock salt. CaS has been studied as a component in a process that would recycle gypsum, a product of flue-gas desulfurization. Like many salts containing sulfide ions, CaS typically has an odour of H2S, which results from a small amount of this gas formed by hydrolysis of the salt. Crystal structure of CaS is cubic. The electrical conductivity of calcium sulfide in the temperature range of 650-1000 was studied in great detail. It was concluded that CaS could be used as a potential electrolyte in a sulfur concentration cell.

Calcium Sulfide (CaS) Powder Specifications

Chemical formula
Molar mass 72.143 g/mol
Appearance white crystals 
Density 2.59 g/cm3
Melting point 2,525 °C (4,577 °F; 2,798 K)
Solubility in water
Solubility insoluble in alcohol 
reacts with acid
Refractive index
2.137 nD

Calcium Sulfide (CaS) Powder Application

Calcium sulfide may be used to remove heavy metals from wastewater.

Calcium Sulfide (CaS) Powder Packaging

Our calcium sulfide is carefully handled to minimize damage during storage and transportation and to preserve the quality of our product in its original condition.


Calcium Sulfide (CaS) Powder Safety Information

Signal Word


Hazard Statements


Hazard Codes


Risk Codes


Safety Statements


RTECS Number


Transport Information

UN 3179 4.1/PG 2

WGK Germany


GHS Pictograms



CA1965 Calcium Copper Titanate Powder

CA1965 Calcium Copper Titanate Powder (CAS No. 12336-91-3)

CA2667 Calcium Metaphosphate Powder (CAS 123093-85-6)

CA2667 Calcium Metaphosphate Powder (CAS 123093-85-6)

CA2925 Calcium Hydride Powder (CAS: 7789-78-8)

CA2925 Calcium Hydride Powder (CAS: 7789-78-8)


CA2974 Calcium Acetate Monohydrate (CAS: 5743-26-0)

sc/1615274728-normal-Calcium Acetylacetonate Hydrate.jpg

CA3158 Calcium Acetylacetonate Hydrate (CAS: 345909-31-1)

sc/1635490849-normal-Calcium Stearate (2).jpg

CA3744 Calcium Stearate (CAS No. 1592-23-0)

sc/1655431128-normal-Nickel-Calcium (Ni-Ca) Master Alloy.jpg

NK4206 Nickel-Calcium (Ni-Ca) Master Alloy


Please fill in your details and one of our material experts will get back to you within 24 hours. For more information, contact us via E-mail at

** Email address with your company's domain name is preferred. Otherwise, we may not be able to process your inquiry.

 Inquiry List