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| Benzene | CAS 71-43-2 | ||
| C6H6 | RTECS CY1400000 | ||
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Synonyms & Trade Names Benzol, Phenyl hydride |
DOT ID & Guide 1114 130 |
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Exposure Limits |
NIOSH REL: Ca TWA 0.1 ppm ST 1 ppm See Appendix A | ||
| OSHA PEL: [1910.1028] TWA 1 ppm ST 5 ppm See Appendix F | |||
| IDLH Ca [500 ppm] | 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 |
BP: 176°F |
FRZ: 42°F |
Sol: 0.07% |
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VP: 75 mmHg |
IP: 9.24 eV |
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Sp.Gr: 0.88 |
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Fl.P: 12°F |
UEL: 7.8% |
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 |
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Personal Protection & Sanitation Skin: Prevent skin contact Eyes: Prevent eye contact Wash skin: When contaminated Remove: When wet (flammable) Change: No recommendation Provide: Eyewash, Quick drench |
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 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 |
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| Exposure Routes inhalation, skin absorption, ingestion, skin and/or eye contact | |
| 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 |