beta-Chloroprene |
Synonyms & Trade Names 2-Chloro-1,3-butadiene; Chlorobutadiene; Chloroprene |
CAS No. 126-99-8 |
RTECS No. EI9625000 |
DOT ID & Guide 1991 131P (inhibited) |
FormulaCH2=CClCH=CH2 |
Conversion 1 ppm = 3.62 mg/m3 |
IDLH Ca [300 ppm]
See: 126998 |
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] |
Measurement Methods
NIOSH 1002;
OSHA 112
See: NMAM or OSHA Methods |
Physical Description Colorless liquid with a pungent, ether-like odor. |
MW: 88.5 |
BP: 139°F |
FRZ: -153°F |
Sol: Slight |
VP: 188 mmHg |
IP: 8.79 eV |
Sp.Gr: 0.96 |
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. |
Incompatibilities & Reactivities Peroxides & other oxidizers [Note: Polymerizes at room temperature unless inhibited with antioxidants.] |
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] |
Target Organs Eyes, skin, respiratory system, reproductive system |
Cancer Site[lung & skin cancer] |
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 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: 0133 See MEDICAL TESTS: 0050 |
