Acetic acid
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CAS 64-19-7 |
CH3COOH |
RTECS AF1225000 |
Synonyms & Trade Names
Acetic acid (aqueous), Ethanoic acid, Glacial acetic acid (pure compound), Methanecarboxylic acid [Note: Can be found in concentrations of 5-8% in vinegar.] |
DOT ID & Guide
2790 / 153 (10-80% acid)
2789 / 132 (>80% acid) |
Exposure
Limits |
NIOSH REL: TWA 10 ppm (25 mg/m3) ST 15 ppm (37 mg/m3) |
| OSHA PEL: TWA 10 ppm (25 mg/m3) |
IDLH 50 ppm See: 64197 |
Conversion 1 ppm = 2.46 mg/m3 |
Physical Description
Colorless liquid or crystals with a sour, vinegar-like odor. [Note: Pure compound is a solid below 62°F. Often used in an aqueous solution.] |
MW: 60.1
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BP: 244°F
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FRZ: 62°F
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Sol: Miscible
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VP: 11 mmHg
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IP: 10.66 eV
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Sp.Gr: 1.05
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Fl.P: 103°F
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UEL(200°F): 19.9%
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LEL: 4.0%
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| Class II Combustible Liquid: Fl.P. at or above 100°F and below 140°F. |
Incompatibilities & Reactivities
Strong oxidizers (especially chromic acid, sodium peroxide & nitric acid), strong caustics [Note: Corrosive to metals.] |
Measurement Methods
NIOSH 1603; OSHA ID186SG
See: NMAM or OSHA Methods |
Personal Protection & Sanitation (See protection)
Skin: Prevent skin contact (>10%)
Eyes: Prevent eye contact
Wash skin: When contaminated (>10%)
Remove: When wet or contaminated (>10%)
Change: No recommendation
Provide: Eyewash (>5%), Quick drench (>50%)
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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 50 ppm:
(APF = 25) Any supplied-air respirator operated in a continuous-flow mode£
(APF = 25) Any powered, air-purifying respirator with organic vapor cartridge(s)£
(APF = 50) Any chemical cartridge respirator with a full facepiece and organic vapor cartridge(s)
(APF = 50) Any air-purifying, full-facepiece respirator (gas mask) with a chin-style, front- or back-mounted organic vapor canister
(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 organic vapor canister/Any appropriate escape-type, self-contained breathing apparatus
Important additional information about respirator selection
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Exposure Routes inhalation, skin and/or eye contact |
Symptoms Irritation eyes, skin, nose, throat; eye, skin burns; skin sensitization; dental erosion; black skin, hyperkeratosis; conjunctivitis, lacrimation (discharge of tears); pharyngeal edema, chronic bronchitis |
Target Organs Eyes, skin, respiratory system, teeth
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| See also: INTRODUCTION See ICSC CARD: 0363 |
