BERYLLIUM OXIDE manufacturers and suppliers

BERYLLIUM OXIDE suppliers

Properties

Melting point:: 2575°C

Boiling point:: 4300°C

Density: 3.01 g/mL at 25 °C(lit.)

refractive index: 1.733

Flash point:: 4300°C

solubility: insoluble in H2O; slightly soluble in acid solutions, alkaline solutions

form: Powder

Specific Gravity: 3.01

color: white

Water Solubility: Insoluble in water. Slowly soluble in concentrated acids, alkali hydroxides

Crystal Structure: Hexagonal, Wurtzite (Zincite) Structure - Space Group P 63mc

Merck: 14,1172

Exposure limits: ACGIH: TWA 0.00005 mg/m3
OSHA: Ceiling 2 μg/m3
NIOSH: IDLH 4 mg/m3; Ceiling 0.0005 mg/m3

Stability:: Stable.

Safety Information

Symbol(GHS): GHS06,GHS08

Signal word: Danger

Hazard statements: H301-H315-H317-H319-H330-H335-H350i-H372

Precautionary statements: P202-P260-P280-P302+P352-P304+P340+P310-P305+P351+P338

Hazard Codes: T+

Risk Statements: 49-25-26-36/37/38-43-48/23

Safety Statements: 53-45

RIDADR: UN 1566 6.1/PG 2

WGK Germany: 1

RTECS: DS4025000

TSCA: Yes

HazardClass: 6.1

PackingGroup: II

Use

A colorless to white crystalline powder of the composition beryllium oxide, also called beryllia. It has a specific gravity of 3.025, a high melting point, about 2585 C, and a Knoop hardness of 2000. It is used for polishing hard metals and for making hot-pressed ceramic parts. Its high heat resistance and thermal conductivity make it useful for crucibles, and its high dielectric strength makes it suitable for high-frequency insulators. Single-crystal beryllia fibers, or whiskers, have a tensile strength above 6800 MPa.Beryllium oxide is tapped for nuclear reactor service because of its refractoriness, high thermal conductivity, and ability to moderate (slow down) fast neutrons. The thermal neutrons that result are more efficient in causing fusion of uranium- 235. Nuclear industry uses for beryllia include reflectors and the matrix material for fuel elements. When mixed with suitable nuclear poisons, beryllium oxide may be a new candidate for shielding and control rod assembly applications.

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