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2-Pentanone

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Synonyms & Trade Names
Ethyl acetone, Methyl propyl ketone, MPK
CAS No.
107-87-9
RTECS No.
SA7875000
DOT ID & Guide
1249 127
Formula
CH₃COCH₂CH₂CH₃
Conversion
1 ppm = 3.52 mg/m3
IDLH
1500 ppm
See: 107879
Exposure Limits
NIOSH REL
TWA 150 ppm (530 mg/m3)
OSHA PEL
TWA 200 ppm (700 mg/m3) See Appendix G
Measurement Methods
NIOSH 1300 , 2555
See: NMAM or OSHA Methods
Physical Description
Colorless to water-white liquid with a characteristic acetone-like odor.
Molecular Weight
86.1
Boiling Point
215°F
Freezing Point
-108°F
Solubility
6%
Vapor Pressure
27 mmHg
Ionization Potential
9.39 eV
Specific Gravity
0.81
Flash Point
45°F
Upper Explosive Limit
8.2%
Lower Explosive Limit
1.5%
Class IB Flammable Liquid: Fl.P. below 73°F and BP at or above 100°F.
Incompatibilities & Reactivities
Oxidizers, bromine trifluoride
Exposure Routes
inhalation, ingestion, skin and/or eye contact
Symptoms
irritation eyes, skin, mucous membrane; headache; dermatitis; narcosis, coma
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
Breathing:Respiratory support
Swallow:Medical attention immediately
Respirator Recommendations

NIOSH

Up to 1500 ppm:
(APF = 10) Any chemical cartridge respirator with organic vapor cartridge(s)*
(APF = 25) Any powered, air-purifying 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 = 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

See also
INTRODUCTION   ICSC CARD: 0816   MEDICAL TESTS: 0146
Page last reviewed: October 30, 2019
Content source: National Institute for Occupational Safety and Health