| Agent Name |
Calcium oxide |
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| CAS Number |
1305-78-8 |
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| Formula |
Ca-O |
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| Major Category |
Other Chemicals |
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| 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 |
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| Category |
Bases |
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| Description |
White or gray, odorless lumps or granular powder; [NIOSH] |
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| 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] |
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| 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] |
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| Exposure Assessment |
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| Skin Designation (ACGIH) |
No |
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| TLV (ACGIH) |
2 mg/m3 |
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| PEL (OSHA) |
5 mg/m3 |
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| IDLH (NIOSH) |
25 mg/m3 |
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| 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]. |
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| Reference Link |
International Chemical Safety Cards (WHO/IPCS/ILO) |
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| Flammability (NFPA) |
0: will not burn |
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| Adverse Effects |
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| Dermatotoxin |
Skin Burns |
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| Links to Other NLM Databases |
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| Health Studies |
Human Health Effects from Hazardous Substances Data Bank: CALCIUM OXIDE
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