Arsenous trichloride
[CAS# 7784-34-1]

Identification

• Classification: Inorganic chemical industry >> Inorganic salt >> Metal halides and halides >> Metal chlorides and salts
• Name: Arsenous trichloride
• Synonyms: Arsenic(III) chloride; Arsenous chloride; Fuming liquid arsenic; Trichloroarsine
• Molecular Formula: AsCl₃
• Molecular Weight: 181.28
• CAS Registry Number: 7784-34-1
• EC Number: 232-059-5

Properties

• Density: 2.1646 g/cm³ (20 ºC)^*
• Melting point: -16 ºC^**
• Refractive index: 1.6006 (589.3 nm 20 ºC)^***

^* Sumarokova, T.; Zhurnal Obshchei Khimii 1951, V21, P1505-8.

^** "International Chemical Safety Cards" data were obtained from the National Institute for Occupational Safety and Health (US)

^*** "Hazardous Substances Data Bank" data were obtained from the National Library of Medicine (US)

Safety Data

• Hazard Symbols: T;N
• Risk Codes: R23/25;R50/53
• Safety Description: S20/21;S28;S45;S60;S61

Hazard Classification

Hazard	Class	Category Code	Hazard Statement
Acute toxicity	Acute Tox.	3	H331
Chronic hazardous to the aquatic environment	Aquatic Chronic	1	H410
Acute toxicity	Acute Tox.	3	H301
Acute hazardous to the aquatic environment	Aquatic Acute	1	H400
Acute toxicity	Acute Tox.	2	H310
Skin corrosion	Skin Corr.	1B	H314
Carcinogenicity	Carc.	1A	H350
Acute toxicity	Acute Tox.	2	H300
Carcinogenicity	Carc.	1B	H350
Serious eye damage	Eye Dam.	1	H318

• Transport Information: UN 1560 6.1 / PGI