Isobutyl acetate

Synonyms & Trade Names

Isobutyl ester of acetic acid, 2-Methylpropyl acetate, 2-Methylpropyl ester of acetic acid, β-Methylpropyl ethanoate

CAS No.

110-19-0

RTECS No.

AI4025000

DOT ID & Guide

1213 129

Formula

CH₃COOCH₂CH(CH₃)₂

Conversion

1 ppm = 4.75 mg/m³

IDLH

1300 ppm [10%LEL]
See: 110190

Exposure Limits

NIOSH REL

TWA 150 ppm (700 mg/m³)

OSHA PEL

TWA 150 ppm (700 mg/m³)

Measurement Methods

NIOSH 1450;
OSHA 7
See: NMAM or OSHA Methods

Physical Description

Colorless liquid with a fruity, floral odor.

Molecular Weight

116.2

Boiling Point

243°F

Freezing Point

-145°F

Solubility

(77°F): 0.6%

Vapor Pressure

13 mmHg

Ionization Potential

9.97 eV

Specific Gravity

0.87

Flash Point

64°F

Upper Explosive Limit

10.5%

Lower Explosive Limit

1.3%

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, skin, upper respiratory system; headache, drowsiness, anesthesia; In Animals: 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 1300 ppm:
(APF = 25) Any supplied-air respirator operated in a continuous-flow mode^£
(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 = 25) Any powered, air-purifying respirator with organic vapor cartridge(s)^£
(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

Isobutyl acetate

NIOSH REL

OSHA PEL

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