Agent Name

Zirconium boride

CAS Number

12045-64-6

Formula

B2-Zr

Major Category

Metals

Synonyms

Zirconium boride (ZrB2); Zirconium diboride; [ChemIDplus]

Category

Metals, Inorganic Compounds

Description

Grey solid; [Hawley] Powder; [MSDSonline]

Sources/Uses

Used as a refractory material (aircraft and rockets), high-temperature electrical conductor, and cutting tool coating; [Hawley] Used as a diffusion barrier in semiconductors, a refractory material for molten metals, and an absorbent in nuclear reactors; [Ullmann]

Comments

Highly flammable; An irritant; [MSDSonline] See "Boron" and "Zirconium."

Exposure Assessment
TLV (ACGIH)

5 mg/m3, as Zr

STEL (ACGIH)

10 mg/m3, as Zr

PEL (OSHA)

5 mg/m3, as Zr (compounds)

MAK

1 mg/m3, inhalable fraction (metal and insol. cmpds.)

IDLH (NIOSH)

25 mg/m3, as Zr

Links to Other NLM Databases
Toxicity Information

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Chemical Information

Search ChemIDplus

Related Information in HazMap
Processes

Industrial Processes with risk of exposure: