Benzene
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CAS
71-43-2
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C6H6
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RTECS
CY1400000
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Synonyms & Trade Names
Benzol, Phenyl hydride
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DOT ID & Guide
1114 / 130
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Exposure
Limits
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NIOSH REL: Ca TWA 0.1 ppm ST 1 ppm See Appendix A
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OSHA PEL: [1910.1028] TWA 1 ppm ST 5 ppm See Appendix F
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IDLH
Ca [500 ppm]
See: 71432
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Conversion
1 ppm = 3.19 mg/m3
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Physical Description
Colorless to light-yellow liquid with an aromatic odor. [Note: A solid below 42°F.]
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MW: 78.1
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BP: 176°F
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FRZ: 42°F
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Sol: 0.07%
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VP: 75 mmHg
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IP: 9.24 eV
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Sp.Gr: 0.88
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Fl.P: 12°F
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UEL: 7.8%
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LEL: 1.2%
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Class IB Flammable Liquid: Fl.P. below 73°F and BP at or above 100°F.
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Incompatibilities & Reactivities
Strong oxidizers, many fluorides & perchlorates, nitric acid
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Measurement Methods
NIOSH 1500, 1501, 3700, 3800; OSHA 12, 1005
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
Provide: Eyewash, Quick drench
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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 (See Appendix E)
NIOSH
At concentrations above the NIOSH REL, or where there is no REL, at any detectable concentration:
(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, nose, respiratory system; dizziness; headache, nausea, staggered gait; anorexia, lassitude (weakness, exhaustion); dermatitis; bone marrow depression; [potential occupational carcinogen]
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Target Organs
Eyes, skin, respiratory system, blood, central nervous system, bone marrow
Cancer Site
[leukemia]
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See also: INTRODUCTION
See ICSC CARD: 0015 See MEDICAL TESTS: 0022
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