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| beta-Chloroprene | CAS 126-99-8 | ||
| CH2=CClCH=CH2 | RTECS EI9625000 | ||
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Synonyms & Trade Names 2-Chloro-1,3-butadiene; Chlorobutadiene; Chloroprene |
DOT ID & Guide 1991 131P (inhibited) |
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Exposure Limits |
NIOSH REL: Ca C 1 ppm (3.6 mg/m3) [15-minute] See Appendix A | ||
| OSHA PEL†: TWA 25 ppm (90 mg/m3) [skin] | |||
| IDLH Ca [300 ppm] See: 126998 | Conversion 1 ppm = 3.62 mg/m3 | ||
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Physical Description Colorless liquid with a pungent, ether-like odor. |
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MW: 88.5 |
BP: 139°F |
FRZ: -153°F |
Sol: Slight |
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VP: 188 mmHg |
IP: 8.79 eV |
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Sp.Gr: 0.96 |
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Fl.P: -4°F |
UEL: 11.3% |
LEL: 1.9% |
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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 Peroxides & other oxidizers [Note: Polymerizes at room temperature unless inhibited with antioxidants.] |
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Measurement Methods NIOSH 1002; OSHA 112 See: NMAM or OSHA Methods |
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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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Important additional information about respirator selection 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, respiratory system; anxiety, irritability; dermatitis; alopecia; reproductive effects; [potential occupational carcinogen] | |
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Target Organs
Eyes, skin, respiratory system, reproductive system Cancer Site [lung & skin cancer] |
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| See also: INTRODUCTION See ICSC CARD: 0133 See MEDICAL TESTS: 0050 |