beta-Chloroprene
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CAS
126-99-8
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CH2=CClCH=CH2
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RTECS
EI9625000
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Synonyms & Trade Names
2-Chloro-1,3-butadiene; Chlorobutadiene; Chloroprene
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DOT ID & Guide
1991 / 131P (inhibited)
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Exposure
Limits
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NIOSH REL: Ca C 1 ppm (3.6 mg/m3) [15-minute] See Appendix A
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OSHA PEL†: TWA 25 ppm (90 mg/m3) [skin]
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IDLH
Ca [300 ppm]
See: 126998
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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
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BP: 139°F
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FRZ: -153°F
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Sol: Slight
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VP: 188 mmHg
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IP: 8.79 eV
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Sp.Gr: 0.96
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Fl.P: -4°F
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UEL: 11.3%
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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 |
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
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, 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
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