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Cumene

Synonyms & Trade Names
Cumol, Isopropyl benzene, 2-Phenyl propane
CAS No.
98-82-8
RTECS No.
GR8575000
DOT ID & Guide
1918 130
Formula
C6H5CH(CH3)2
Conversion
1 ppm = 4.92 mg/m3
IDLH
900 ppm [10%LEL]
See: 98828
Exposure Limits
NIOSH REL
: TWA 50 ppm (245 mg/m3) [skin]
OSHA PEL
: TWA 50 ppm (245 mg/m3) [skin]
Measurement Methods

NIOSH 1501
See: NMAM or OSHA Methods
Physical Description
Colorless liquid with a sharp, penetrating, aromatic odor.
MW:
120.2
BP:
306°F
FRZ:
-141°F
Sol:
Insoluble
VP:
8 mmHg
IP:
8.75 eV
Sp.Gr:
0.86
Fl.P:
96°F
UEL:
6.5%
LEL:
0.9%
Class IC Flammable Liquid: Fl.P. at or above 73°F and below 100°F.
Incompatibilities & Reactivities
Oxidizers, nitric acid, sulfur acid [Note: Forms cumene hydroperoxide upon long exposure to air.]
Exposure Routes
inhalation, skin absorption, ingestion, skin and/or eye contact
Symptoms
irritation eyes, skin, mucous membrane; dermatitis; headache, 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 promptly
Breathing: Respiratory support
Swallow: Medical attention immediately
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

See also: INTRODUCTION   See ICSC CARD: 0170   See MEDICAL TESTS: 0060
 

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