Agent Name

Sodium tungstate

CAS Number

13472-45-2

Formula

O4-W.2Na

Major Category

Metals

Synonyms

Disodium tetraoxatungstate (2-); Disodium tetraoxotungstate (2-); Disodium tungstate; Disodium tungstate (Na2WO4); Sodium tungstate(VI); Sodium tungstate(VI) (Na2WO4); Sodium tungsten oxide (Na2WO4); Sodium wolframate; Tungstic acid (H2WO4), disodium salt; [ChemIDplus]

Category

Metals, Inorganic Compounds

Description

White solid; [HSDB] White powder; [MSDSonline] Soluble in water; [Hawley]

Sources/Uses

Used to make fire and water resistant fabrics, metallic tungsten, and other tungsten compounds; Also used as a biological reagent, a precipitant for alkaloids, and a catalyst for the oxidation of maleic acid; [HSDB]

Comments

In high-dose animal experiments, sodium tungstate is the most toxic form of tungsten; Oral LD50 (rat) = 223-255 mg/kg; [ACGIH] May cause irritation; [MSDSonline] See "Tungsten."

Exposure Assessment
TLV (ACGIH)

3 mg/m3, as W, respirable particulate matter

Links to Other NLM Databases
Health Studies

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Toxicity Information

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Chemical Information

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Processes

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