Cumene
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CAS
98-82-8
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C6H5CH(CH3)2
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RTECS
GR8575000
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Synonyms & Trade Names
Cumol, Isopropyl benzene, 2-Phenyl propane
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DOT ID & Guide
1918 / 130
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Exposure
Limits
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NIOSH REL: TWA 50 ppm (245 mg/m3) [skin]
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OSHA PEL: TWA 50 ppm (245 mg/m3) [skin]
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IDLH
900 ppm [10%LEL]
See: 98828
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Conversion
1 ppm = 4.92 mg/m3
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Physical Description
Colorless liquid with a sharp, penetrating, aromatic odor.
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MW: 120.2
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BP: 306°F
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FRZ: -141°F
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Sol: Insoluble
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VP: 8 mmHg
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IP: 8.75 eV
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Sp.Gr: 0.86
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Fl.P: 96°F
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UEL: 6.5%
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LEL: 0.9%
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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
Oxidizers, nitric acid, sulfur acid [Note: Forms cumene hydroperoxide upon long exposure to air.]
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Measurement Methods
NIOSH 1501
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: Water flush promptly
Breathing: Respiratory support
Swallow: Medical attention immediately
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Respirator Recommendations
NIOSH/OSHA
Up to 500 ppm:
(APF = 10) Any chemical cartridge respirator with organic vapor cartridge(s)*
(APF = 10) Any supplied-air respirator*
Up to 900 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
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Exposure Routes
inhalation, skin absorption, ingestion, skin and/or eye contact
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Symptoms
Irritation eyes, skin, mucous membrane; dermatitis; headache, narcosis, coma
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Target Organs
Eyes, skin, respiratory system, central nervous system
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See also: INTRODUCTION
See ICSC CARD: 0170 See MEDICAL TESTS: 0060
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