Hexone |
Synonyms & Trade Names Isobutyl methyl ketone, Methyl isobutyl ketone, 4-Methyl 2-pentanone, MIBK |
CAS No. 108-10-1 |
RTECS No. SA9275000 |
DOT ID & Guide 1245 127 |
FormulaCH3COCH2CH(CH3)2 |
Conversion 1 ppm = 4.10 mg/m3 |
IDLH 500 ppm
See: 108101 |
Exposure Limits NIOSH REL: TWA 50 ppm (205 mg/m3) ST 75 ppm (300 mg/m3)
OSHA PEL†: TWA 100 ppm (410 mg/m3) |
Measurement Methods
NIOSH 1300 , 2555;
OSHA 1004
See: NMAM or OSHA Methods |
Physical Description Colorless liquid with a pleasant odor. |
MW: 100.2 |
BP: 242°F |
FRZ: -120°F |
Sol: 2% |
VP: 16 mmHg |
IP: 9.30 eV |
Sp.Gr: 0.80 |
Fl.P: 64°F |
UEL(200°F): 8.0% |
LEL(200°F): 1.2% |
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| Class IB Flammable Liquid: Fl.P. below 73°F and BP at or above 100°F. |
Incompatibilities & Reactivities Strong oxidizers, potassium tert-butoxide |
Exposure Routes inhalation, ingestion, skin and/or eye contact |
Symptoms irritation eyes, skin, mucous membrane; headache, narcosis, coma; dermatitis; in animals: liver, kidney damage |
Target Organs Eyes, skin, respiratory system, central nervous system, liver, kidneys |
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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
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First Aid (See procedures)
Eye: Irrigate immediately
Skin: Water flush promptly
Breathing: Respiratory support
Swallow: Medical attention immediately |
Respirator Recommendations NIOSH Up to 500 ppm:
(APF = 10) Any chemical cartridge 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 = 50) Any powered, air-purifying respirator with a tight-fitting facepiece and organic vapor cartridge(s)*
(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 See ICSC CARD: 0511 See MEDICAL TESTS: 0134 |
