NIOSH Publication No. 2005-151:

NIOSH Pocket Guide to Chemical Hazards

September 2005

sec-Amyl acetate

CAS
626-38-0

CH3COOCH(CH3)C3H7

RTECS
AJ2100000
Synonyms & Trade Names

1-Methylbutyl acetate, 2-Pentanol acetate, 2-Pentyl ester of acetic acid
DOT ID & Guide
1104 / 129

Exposure
Limits

NIOSH REL: TWA 125 ppm (650 mg/m3)
OSHA PEL: TWA 125 ppm (650 mg/m3)
IDLH
1000 ppm See: 626380
Conversion
1 ppm = 5.33 mg/m3
Physical Description
Colorless liquid with a mild odor.
MW: 130.2
BP: 249°F
FRZ: -109°F
Sol: Slight
VP: 7 mmHg
IP: ?

Sp.Gr: 0.87
Fl.P: 89°F
UEL: 7.5%
LEL: 1%

Class IC Flammable Liquid: Fl.P. at or above 73F and below 100F.
Incompatibilities & Reactivities

Nitrates; strong oxidizers, alkalis & acids
Measurement Methods
NIOSH 1450, 2549; OSHA 7
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 (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
Important additional information about respirator selection
Exposure Routes
inhalation, ingestion, skin and/or eye contact
Symptoms
Irritation eyes, skin, nose; narcosis; dermatitis; possible kidney, liver injury; possible central nervous system depression
Target Organs
Eyes, skin, respiratory system, kidneys, liver, central nervous system
See also: INTRODUCTION   See ICSC CARD: 0219