Agent Name

Uranium dioxide

CAS Number

1344-57-6

Formula

O2-U

Major Category

Physical/Radiation

Synonyms

Uranium oxide (UO2); [ChemIDplus] Uranous oxide; Black uranium oxide; [Merck Index] Uranium (IV) oxide; [Sax] Brown oxide; [ATSDR ToxProfiles]

Category

Radioactive Compounds

Description

Brown to black powder; [Merck Index]

Sources/Uses

Occurs naturally in uraninite and pitchblende; Used in nuclear fuel; [Merck Index]

Comments

See "Uranium" and linked occupational diseases.

Exposure Assessment
BEI

Uranium in urine = 200 ug/L at end of shift; [ACGIH]

TLV (ACGIH)

0.2 mg/m3, as U

STEL (ACGIH)

0.6 mg/m3, as U

PEL (OSHA)

0.05 mg/m3, as U (sol), 0.25 mg/m3, as U (insol)

IDLH (NIOSH)

10 mg/m3, as U

Explanatory Notes

mp = 2865 degrees C; [Merck Index] Insoluble in water; Soluble in HNO3; [ATSDR ToxProfiles]

Links to Other NLM Databases
Health Studies

Human Health Effects from Hazardous Substances Data Bank:

Toxicity Information

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Chemical Information

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Biomedical References

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Related Information in HazMap
Other Information

No other related information on this agent was found.