Diarsenic triselenide
[CAS# 1303-36-2]

Identification

• Classification: Inorganic chemical industry >> Inorganic salt >> Chalcogenide
• Name: Diarsenic triselenide
• Synonyms: Arsenic triselenide; Arsenous selenide
• Molecular Formula: As₂Se₃
• Molecular Weight: 386.72
• CAS Registry Number: 1303-36-2
• EC Number: 215-119-5

Properties

• Density: 4.62 g/cm^3*
• Melting point: 260 °C^**
• Refractive index: 2.8^***

^* Shpak, I. I.

^** "PhysProp" data were obtained from Syracuse Research Corporation of Syracuse, New York (US)

^*** Viens, Jean Francois

Safety Data

Hazard Classification

Hazard	Class	Category Code	Hazard Statement
Acute hazardous to the aquatic environment	Aquatic Acute	1	H400
Acute toxicity	Acute Tox.	3	H301
Specific target organ toxicity - repeated exposure	STOT RE	2	H373
Acute toxicity	Acute Tox.	3	H331
Chronic hazardous to the aquatic environment	Aquatic Chronic	1	H410