| Agent Name |
Oleum |
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| CAS Number |
8014-95-7 |
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| Formula |
H2-O4-S.O3-S |
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| Major Category |
Toxic Gases & Vapors |
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| Synonyms |
Fuming sulfuric acid; Oleum; Oleum iodisum; Sulfur trioxide, mixt. with sulfuric acid; Sulfuric acid fuming; Sulfuric acid mixture with sulfur trioxide; Sulfuric acid, mixt with sulfur trioxide; [ChemIDplus] UN1831 |
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| Category |
Acids |
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| Description |
Colorless to brown, fuming, viscous, and hygroscopic liquid; [ICSC] |
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| Sources/Uses |
Used to make surfactants, dyes, nitrocellulose, explosives, and caprolactam; Also used in petroleum refining and as a drying agent for chlorine & nitric acid; [HSDB] Oleum is a solution of sulfur trioxide in 100% sulfuric acid used in the synthesis of organic chemicals; [Britannica] |
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| Comments |
Highly corrosive to skin; [Quick CPC] A corrosive substance that can cause pulmonary edema; May cause erosion of teeth enamel; [ICSC] Can cause severe burns of the skin and eyes; [CAMEO] See "Sulfuric acid." |
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| Exposure Assessment |
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| TLV (ACGIH) |
0.2 mg/m3, thoracic fraction |
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| PEL (OSHA) |
1 mg/m3 |
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| MAK |
0.1 mg/m3, inhalable fraction |
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| IDLH (NIOSH) |
15 mg/m3 |
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| Lethal Concentration |
LC50 (rats) = 347 ppm/1h |
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| Explanatory Notes |
Cancer designations refer to sulfuric acid contained in strong inorganic acid mists; [ACGIH] |
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| Adverse Effects |
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| Toxic Pneumonitis |
Yes |
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| Dermatotoxin |
Skin Burns |
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| IARC Carcinogen |
Known Carcinogen |
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| Links to Other NLM Databases |
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