Sulfuric acid
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CAS
7664-93-9
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H2SO4
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RTECS
WS5600000
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Synonyms & Trade Names
Battery acid, Hydrogen sulfate, Oil of vitriol, Sulfuric acid (aqueous)
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DOT ID & Guide
1830 / 137
1831 / 137 (fuming)
1832 / 137 (spent)
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Exposure
Limits
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NIOSH REL: TWA 1 mg/m3
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OSHA PEL: TWA 1 mg/m3
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IDLH
15 mg/m3
See: 7664939
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Conversion
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Physical Description
Colorless to dark-brown, oily, odorless liquid. [Note: Pure compound is a solid below 51°F. Often used in an aqueous solution.]
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MW: 98.1
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BP: 554°F
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FRZ: 51°F
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Sol: Miscible
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VP: 0.001 mmHg
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IP: ?
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Sp.Gr: 1.84 (96-98% acid)
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Fl.P: NA
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UEL: NA
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LEL: NA
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Noncombustible Liquid, but capable of igniting finely divided combustible materials.
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Incompatibilities & Reactivities
Organic materials, chlorates, carbides, fulminates, water, powdered metals [Note: Reacts violently with water with evolution of heat. Corrosive to metals.]
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Measurement Methods
NIOSH 7903; OSHA ID113, ID165SG
See: NMAM or OSHA Methods |
Personal Protection & Sanitation (See protection)
Skin: Prevent skin contact
Eyes: Prevent eye contact
Wash skin: When contaminated
Remove: When wet or contaminated
Change: No recommendation
Provide: Eyewash (>1%), Quick drench (>1%)
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First Aid (See procedures)
Eye: Irrigate immediately
Skin: Water flush immediately
Breathing: Respiratory support
Swallow: Medical attention immediately
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Respirator Recommendations
NIOSH/OSHA
Up to 15 mg/m3:
(APF = 25) Any supplied-air respirator operated in a continuous-flow mode£
(APF = 25) Any powered, air-purifying respirator with acid gas cartridge(s) in combination with a high-efficiency particulate filter£
(APF = 50) Any chemical cartridge respirator with a full facepiece and acid gas cartridge(s) in combination with an N100, R100, or P100 filter. Click here for information on selection of N, R, or P filters.
(APF = 50) Any air-purifying, full-facepiece respirator (gas mask) with a chin-style, front- or back-mounted acid gas canister having an N100, R100, or P100 filter. Click here for information on selection of N, R, or P filters.
(APF = 50) Any self-contained breathing apparatus with a full facepiece
(APF = 50) Any supplied-air respirator with a full facepiece
Emergency or planned entry into unknown concentrations or IDLH conditions:
(APF = 10,000) Any self-contained breathing apparatus that has a full facepiece and is operated in a pressure-demand or other positive-pressure mode
(APF = 10,000) Any supplied-air respirator that has a full facepiece and is operated in a pressure-demand or other positive-pressure mode in combination with an auxiliary self-contained positive-pressure breathing apparatus
Escape:
(APF = 50) Any air-purifying, full-facepiece respirator (gas mask) with a chin-style, front- or back-mounted acid gas canister having an N100, R100, or P100 filter. Click here for information on selection of N, R, or P filters./Any appropriate escape-type, self-contained breathing apparatus
Important additional information about respirator selection
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Exposure Routes
inhalation, ingestion, skin and/or eye contact
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Symptoms
Irritation eyes, skin, nose, throat; pulmonary edema, bronchitis; emphysema; conjunctivitis; stomatis; dental erosion; eye, skin burns; dermatitis
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Target Organs
Eyes, skin, respiratory system, teeth
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See also: INTRODUCTION
See ICSC CARD: 0362 See MEDICAL TESTS: 0218
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