Agent Name

Calcium oxide

CAS Number

1305-78-8

Formula

Ca-O

Major Category

Other Classes

Synonyms

Airlock; Bell CML(E); Bell CML(P); Burnt lime; CALX; CML 21; CML 31; CML 35; Calcia; Calcia (CaO); Calcium monoxide; Calcium oxide; Calcium oxide (CaO); Caloxal CPA; Caloxol CP2; Caloxol W3; Calx usta; Calxyl; Chaux vive; Desical P; Gebrannter kalk; Lime, burned; Oxyde de calcium [French]; QC-X; Quick lime; Quicklime; Rhenosorb C; Rhenosorb F; Unslaked lime; Vesta PP; Wapniowy tlenek [Polish]; [ChemIDplus] UN1910

Category

Bases

Description

White or gray, odorless lumps or granular powder; [NIOSH]

Sources/Uses

Used in building materials (bricks, plaster, mortar, and stucco); to make aluminum, magnesium, calcium salts, and glass; to dehair hides; to process non-ferrous ores; to produce paper pulp; and to clarify cane and beet sugar juices; Also used in drilling fluids, lubricants, and water treatment; [HSDB]

Comments

Can cause first degree burns on short exposure and second degree burns on long exposure; [CHRIS] May be corrosive to the skin, eyes, and respiratory tract; May cause ulceration and perforation of the nasal septum; [ICSC]

Exposure Assessment
Skin Designation (ACGIH)

Insufficient data

MAK

1 mg/m3

Excerpts from Documentation for IDLHs

Human data: Strong nasal irritation has been reported to result from exposures to about 25 mg/m3, but exposures to 9 to 10 mg/m3 resulted in no observable irritation [ACGIH 1991].

Reference Link

ICSC: Calcium oxide

Adverse Effects
Dermatotoxin

Skin Burns

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
Processes

Industrial Processes with risk of exposure: