Agent Name

Tungsten trioxide

CAS Number

1314-35-8

Formula

O3-W

Major Category

Metals

Synonyms

C.I. 77901; CI 77901; Tungsten Blue; Tungsten oxide (WO3); Tungsten(VI) oxide; Tungstic acid; Tungstic acid anhydride; Tungstic anhydride; Tungstic oxide; Wolframic acid, anhydride; [ChemIDplus]

Category

Metals, Inorganic Compounds

Description

Canary yellow solid; [Merck Index] Blue or brown odorless powder; [MSDSonline] Insoluble in water; [Hawley]

Sources/Uses

Used to make tungstates (used for x-ray screens and fireproofing fabrics), alloys, and yellow pigment in ceramics; [HSDB] Used as a catalyst for synthesis of organometallic compounds; [Ullmann]

Comments

An irritant; [MSDSonline]

Exposure Assessment
TLV (ACGIH)

3 mg/m3, as W, respirable particulate matter

Links to Other NLM Databases
Health Studies

Human Health Effects from Hazardous Substances Data Bank:

Toxicity Information

Search TOXNET

Chemical Information

Search ChemIDplus

Related Information in HazMap
Processes

Industrial Processes with risk of exposure:

Activities

Activities with risk of exposure: