2-Hexanone
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CAS
591-78-6
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CH3CO[CH2]3CH3
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RTECS
MP1400000
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Synonyms & Trade Names
Butyl methyl ketone, MBK, Methyl butyl ketone, Methyl n-butyl ketone
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DOT ID & Guide
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Exposure
Limits
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NIOSH REL: TWA 1 ppm (4 mg/m3)
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OSHA PEL†: TWA 100 ppm (410 mg/m3)
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IDLH
1600 ppm
See: 591786
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Conversion
1 ppm = 4.10 mg/m3
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Physical Description
Colorless liquid with an acetone-like odor.
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MW: 100.2
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BP: 262°F
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FRZ: -71°F
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Sol: 2%
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VP: 11 mmHg
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IP: 9.34 eV
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Sp.Gr: 0.81
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Fl.P: 77°F
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UEL: 8%
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LEL: ?
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Class IC Flammable Liquid: Fl.P. at or above 73°F and below 100°F.
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Incompatibilities & Reactivities
Strong oxidizers
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Measurement Methods
NIOSH 1300, 2555; OSHA PV2031
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
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First Aid (See procedures)
Eye: Irrigate immediately
Skin: Soap wash immediately
Breathing: Respiratory support
Swallow: Medical attention immediately
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Respirator Recommendations
NIOSH
Up to 10 ppm:
(APF = 10) Any supplied-air respirator
Up to 25 ppm:
(APF = 25) Any supplied-air respirator operated in a continuous-flow mode
Up to 50 ppm:
(APF = 50) Any supplied-air respirator that has a tight-fitting facepiece and is operated in a continuous-flow mode
(APF = 50) Any self-contained breathing apparatus with a full facepiece
(APF = 50) Any supplied-air respirator with a full facepiece
Up to 1600 ppm:
(APF = 2000) Any supplied-air respirator that has a full facepiece and is operated in a pressure-demand or other positive-pressure mode
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
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Exposure Routes
inhalation, skin absorption, ingestion, skin and/or eye contact
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Symptoms
Irritation eyes, nose; peripheral neuropathy: lassitude (weakness, exhaustion), paresthesia; dermatitis; headache, drowsiness
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Target Organs
Eyes, skin, respiratory system, central nervous system, peripheral nervous system
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See also: INTRODUCTION
See ICSC CARD: 0489 See MEDICAL TESTS: 0132
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