Beryllium oxide
[CAS 1304-56-9]

Identification

• Classification: Inorganic chemical industry >> Inorganic salt >> Oxides and peroxides >> Metal oxide
• Name: Beryllium oxide
• Synonyms: Beryllia; Beryllium monoxide; Thermalox 995
• Molecular Formula: BeO
• Molecular Weight: 25.01
• CAS Registry Number: 1304-56-9
• EC Number: 215-133-1

Properties

• Density: 3.01
• Melting point: 2670 °C
• Refractive index: 1.733

Safety Data

• Hazard Symbols: GHS06;GHS08 Danger
• Risk Statements: H350i-H330-H301-H335-H372-H315-H319-H317
• Safety Statements: S53.1;S45

Hazard Classification

Hazard	Class	Category Code	Hazard Statement
Acute toxicity	Acute Tox.	2	H330
Carcinogenicity	Carc.	1B	H350
Eye irritation	Eye Irrit.	2	H319
Specific target organ toxicity - repeated exposure	STOT RE	1	H372
Acute toxicity	Acute Tox.	3	H301
Skin sensitization	Skin Sens.	1	H317
Skin irritation	Skin Irrit.	2	H315
Specific target organ toxicity - single exposure	STOT SE	3	H335
Respiratory sensitization	Resp. Sens.	1	H334
Carcinogenicity	Carc.	1B	H350i

• Transport Information: UN 1566