Agent Name

Molybdenum trioxide

Alternative Name

Molybdenum(VI) oxide

CAS Number

1313-27-5

Formula

Mo-O3

Major Category

Metals

Synonyms

Molybdenum(VI) oxide; Mo-1202T; Molybdena; Molybdenum oxide (MoO3); Molybdenum peroxide; Molybdenumperoxide; Molybdic acid anhydride; Molybdic anhydride; Molybdic oxide; Molybdic trioxide; Natural molybdite; [ChemIDplus]

Category

Metals, Inorganic Compounds

Description

White or slightly yellow to slightly bluish solid; [Merck Index] Light green odorless powder; Partially soluble in water (1.07 g/L at 18 deg C); [MSDSonline] A soluble compound; [ACGIH]

Sources/Uses

Used as a polymerization catalyst of olefins, a reagent in chemical analysis, a corrosion inhibitor, a catalyst in the petroleum industry, and an agricultural chemical; Also used to make molybdenum metal and alloys as well as ceramics, enamels, and pigments; [HSDB]

Comments

An eye, mucous membrane, and upper respiratory tract irritant; [HSDB] Serious health risk by ingestion or prolonged inhalation; [eChemPortal: ESIS] Carcinogenicity in man cannot be assessed conclusively because of insufficient data (Group 3B); [MAK] An irritant; [MSDSonline] See "Molybdenum."

Exposure Assessment
TLV (ACGIH)

0.5 mg/m3, as Mo, respirable fraction

PEL (OSHA)

5 mg/m3, as Mo

IDLH (NIOSH)

1000 mg/m3, as Mo

Lethal Concentration

LC50 (rat) > 5,840 mg/m3/4h

Links to Other NLM Databases
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Toxicity Information

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Chemical Information

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Industrial Processes with risk of exposure:

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