Aluminum Sulfide

Aluminum Sulfide is slightly yellow crystalline particles or powder,which smell like rotten egg. If mixed with extra aluminum, it show grey. Aluminum powder and sulfur are raw materials. Aluminum(III) sulfide would react with water.

Aluminum Sulfide

Synonyms: aluminum(III) sulfide, aluminum trisulfide, aluminum iii sulfide powder

CAS No.: 1302-81-4 EINECS No.: 215-109-0
Molecular Formula: Al2S3 Molecular Weight:150.16
Melting Point:1100℃ Boiling Point:1500℃


Impurities: ppm

Al2S3 Ag Bi Cd Cu Fe Mg Ni Pb Se Sn Si Ga Particle size
≥99.9% ≤20 ≤30 ≤20 ≤20 ≤100 ≤50 ≤20 ≤50 ≤40 ≤10 ≤20 ≤30 -100mesh


When come to moisture or water, aluminum(III) sulfide form hydrogen sulfide and aluminum hydroxide. When heating, it erode porcelain and could be restored by iron and hydrocarbon to get aluminum metal. When compounded with SO2, sulphur and aluminum sulphate got.


Aluminum(III) sulfide should be sealed in container in dry, cool, ventilate place. It should avoid oxides, moisture, water, acids.