NIOSH Pocket Guide to Chemical Hazards

sec-Butyl acetate CAS 105-46-4
CH3COOCH(CH3)CH2CH3 RTECS AF7380000
Synonyms & Trade Names
sec-Butyl ester of acetic acid, 1-Methylpropyl acetate
DOT ID & Guide
1123 129
Exposure
Limits
NIOSH REL: TWA 200 ppm (950 mg/m3)
OSHA PEL: TWA 200 ppm (950 mg/m3)
IDLH 1700 ppm [10%LEL] Conversion 1 ppm = 4.75 mg/m3
Physical Description
Colorless liquid with a pleasant, fruity odor.
MW: 116.2
BP: 234°F
FRZ: -100°F
Sol: 0.8%
VP: 10 mmHg
IP: 9.91 eV

Sp.Gr: 0.86
Fl.P: 62°F
UEL: 9.8%
LEL: 1.7%

Class IB Flammable Liquid: Fl.P. below 73F and BP at or above 100F.
Incompatibilities & Reactivities
Nitrates; strong oxidizers, alkalis & acids
Measurement Methods
NIOSH 1450; 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 1700 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; headache; drowsiness; dryness upper respiratory system, skin; narcosis
Target Organs Eyes, skin, respiratory system, central nervous system
See also: INTRODUCTION