Gallium arsenide
[CAS# 1303-00-0]

Identification

• Name: Gallium arsenide
• Synonyms: Gallium monoarsenide; Gallium monoarsenide
• Molecular Formula: GaAs
• Molecular Weight: 144.64
• CAS Registry Number: 1303-00-0
• EC Number: 215-114-8

Properties

• Density: 5.3176 g/cm³ (25 ºC)^*
• Melting point: 1238 ºC^**
• Refractive index: 3.57^***

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

^** Kang, C. H.; Journal of the Electrochemical Society 1987, V134(5), P1261-4.

^*** Yu, Ben; Proceedings of SPIE-The International Society for Optical Engineering 2005, V5624(Semiconductor and Organic Optoelectronic Materials and Devices), P96-103.

Safety Data

• Hazard Symbols: GHS08 Danger
• Hazard Statements: H350-H360F-H372
• Safety Description: S20/21;S28;S45;S60;S61

Hazard Classification

Hazard	Class	Category Code	Hazard Statement
Carcinogenicity	Carc.	1B	H350
Specific target organ toxicity - repeated exposure	STOT RE	1	H372
Reproductive toxicity	Repr.	1B	H360
Reproductive toxicity	Repr.	1B	H360F
Acute toxicity	Acute Tox.	3	H301
Chronic hazardous to the aquatic environment	Aquatic Chronic	1	H410
Acute hazardous to the aquatic environment	Aquatic Acute	1	H400
Acute toxicity	Acute Tox.	3	H331
Reproductive toxicity	Repr.	1B	H360F

• Transport Information: UN 1557 6.1 / PGII