Benzene |
Synonyms & Trade Names Benzol, Phenyl hydride |
CAS No. 71-43-2 |
RTECS No. CY1400000 |
DOT ID & Guide 1114 130 |
FormulaC6H6 |
Conversion 1 ppm = 3.19 mg/m3 |
IDLH Ca [500 ppm]
See: 71432 |
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 |
Measurement Methods
NIOSH 1500 , 1501 , 3700 , 3800;
OSHA 12 , 1005
See: NMAM or OSHA Methods |
Physical Description Colorless to light-yellow liquid with an aromatic odor. [Note: A solid below 42°F.] |
MW: 78.1 |
BP: 176°F |
FRZ: 42°F |
Sol: 0.07% |
VP: 75 mmHg |
IP: 9.24 eV |
Sp.Gr: 0.88 |
Fl.P: 12°F |
UEL: 7.8% |
LEL: 1.2% |
|
|
| Class IB Flammable Liquid: Fl.P. below 73°F and BP at or above 100°F. |
Incompatibilities & Reactivities Strong oxidizers, many fluorides & perchlorates, nitric acid |
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] |
Target Organs Eyes, skin, respiratory system, blood, central nervous system, bone marrow |
Cancer Site[leukemia] |
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
Provide: Eyewash, Quick drench |
First Aid (See procedures)
Eye: Irrigate immediately
Skin: Soap wash immediately
Breathing: Respiratory support
Swallow: Medical attention immediately |
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 |
| See also: INTRODUCTION See ICSC CARD: 0015 See MEDICAL TESTS: 0022 |
