HSE zone: Acetic acid

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<H1><CENTER>NIOSH Pocket Guide to Chemical Hazards 
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Acetic acid 
 
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CAS 
64-19-7 
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CH3COOH 
 
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RTECS 
AF1225000 
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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.] 
 
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DOT ID & Guide 
2790 153 (10-80% acid) 
2789 132 (>80% acid) 
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Exposure Limits 
 
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NIOSH REL: TWA 10 ppm (25 mg/m3) ST 15 ppm (37 mg/m3) 
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OSHA PEL: TWA 10 ppm (25 mg/m3) 
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IDLH 
50 ppm 
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Conversion 
1 ppm = 2.46 mg/m3 
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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.] 
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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. 
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Incompatibilities & Reactivities 
Strong oxidizers (especially chromic acid, sodium peroxide & nitric acid), strong caustics [Note: Corrosive to metals.] 
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Measurement Methods 
NIOSH 1603; OSHA ID186SG 
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Personal Protection & Sanitation 
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 (<a href="firstaid.htm">See procedures</A>) 
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 
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Exposure Routes 
inhalation, skin and/or eye contact 
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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 
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Target Organs 
Eyes, skin, respiratory system, teeth 
 
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See also: <a href="http://goo.gl/z0DvTV">INTRODUCTION </A> 
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Acetic acid

NIOSH Pocket Guide to Chemical Hazards Acetic acid CAS 64-19-7 CH 3 COOH RTECS AF1225000 Synonyms & Tra...

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Acetic acid

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