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sec-Butyl acetate

Synonyms & Trade Names
sec-Butyl ester of acetic acid, 1-Methylpropyl acetate
CAS No.
105-46-4
RTECS No.
AF7380000
DOT ID & Guide
1123 129
Formula
CH3COOCH(CH3)CH2CH3
Conversion
1 ppm = 4.75 mg/m3
IDLH
1700 ppm [10%LEL]
See: 105464
Exposure Limits
NIOSH REL
: TWA 200 ppm (950 mg/m3)
OSHA PEL
: TWA 200 ppm (950 mg/m3)
Measurement Methods

NIOSH 1450;
OSHA 7
See: NMAM or OSHA Methods
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 73°F and BP at or above 100°F.
Incompatibilities & Reactivities
Nitrates; strong oxidizers, alkalis & acids
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
Personal Protection/Sanitation
(See protection codes)
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

Important additional information about respirator selection

See also: INTRODUCTION   See ICSC CARD: 0840
 
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