# NIOSH Pocket Guide to Chemical Hazards
n-Amyl acetate | CAS 628-63-7
CH3COO[CH2]4CH3 | RTECS AJ1925000
Synonyms & Trade Names Amyl acetic ester, Amyl acetic ether, 1-Pentanol acetate, Pentyl ester of acetic acid, Primary amyl acetate | DOT ID & Guide 1104 129
Exposure Limits | NIOSH REL: TWA 100 ppm (525 mg/m3)
OSHA PEL: TWA 100 ppm (525 mg/m3)
IDLH 1000 ppm | Conversion 1 ppm = 5.33 mg/m3
Physical Description Colorless liquid with a persistent banana-like odor.
MW: 130.2 | BP: 301°F | FRZ: -95°F | Sol: 0.2%
VP: 4 mmHg | IP: ? |  | Sp.Gr: 0.88
Fl.P: 77°F | UEL: 7.5% | LEL: 1.1% |
Class IC Flammable Liquid: Fl.P. at or above 73°F and below 100°F.
Incompatibilities & Reactivities Nitrates; strong oxidizers, alkalis & acids
Measurement Methods NIOSH 1450, 2549; 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 1000 ppm: (APF = 10) Any chemical cartridge respirator with 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 = 25) Any powered, air-purifying respirator with organic vapor cartridge(s)*/(APF = 10) Any supplied-air respirator*/(APF = 50) Any self-contained breathing apparatus 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, nose; dermatitis; possible central nervous system depression, narcosis
Target Organs Eyes, skin, respiratory system, central nervous system
See also: INTRODUCTION