# NIOSH Pocket Guide to Chemical Hazards
Ethyl acetate | CAS 141-78-6
CH3COOC2H5 | RTECS AH5425000
Synonyms & Trade Names Acetic ester, Acetic ether, Ethyl ester of acetic acid, Ethyl ethanoate | DOT ID & Guide 1173 129
Exposure Limits | NIOSH REL: TWA 400 ppm (1400 mg/m3)
OSHA PEL: TWA 400 ppm (1400 mg/m3)
IDLH 2000 ppm [10%LEL] | Conversion 1 ppm = 3.60 mg/m3
Physical Description Colorless liquid with an ether-like, fruity odor.
MW: 88.1 | BP: 171°F | FRZ: -117°F | Sol(77°F): 10%
VP: 73 mmHg | IP: 10.01 eV |  | Sp.Gr: 0.90
Fl.P: 24°F | UEL: 11.5% | LEL: 2.0% |
Class IB Flammable Liquid: Fl.P. below 73°F and BP at or above 100°F.
Incompatibilities & Reactivities Nitrates; strong oxidizers, alkalis & acids
Measurement Methods NIOSH 1457; OSHA 7
Personal Protection & Sanitation Skin: Prevent skin contact Eyes: Prevent eye contact Wash skin: When contaminated Remove: When wet (flammable) Change: No recommendation | First Aid (See procedures) Eye: Irrigate immediately Skin: Water flush promptly Breathing: Respiratory support Swallow: Medical attention immediately
Respirator Recommendations NIOSH/OSHA Up to 2000 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
Exposure Routes inhalation, ingestion, skin and/or eye contact
Symptoms Irritation eyes, skin, nose, throat; narcosis; dermatitis
Target Organs Eyes, skin, respiratory system
See also: INTRODUCTION