Cyclopentadiene
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CAS
542-92-7
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C5H6
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RTECS
GY1000000
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Synonyms & Trade Names
1,3-Cyclopentadiene
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DOT ID & Guide
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Exposure
Limits
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NIOSH REL: TWA 75 ppm (200 mg/m3)
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OSHA PEL: TWA 75 ppm (200 mg/m3)
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IDLH
750 ppm
See: 542927
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Conversion
1 ppm = 2.70 mg/m3
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Physical Description
Colorless liquid with an irritating, terpene-like odor.
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MW: 66.1
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BP: 107°F
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FRZ: -121°F
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Sol: Insoluble
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VP: 400 mmHg
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IP: 8.56 eV
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Sp.Gr: 0.80
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Fl.P(oc): 77°F
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UEL: ?
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LEL: ?
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Class IC Flammable Liquid: Fl.P. at or above 73°F and below 100°F.
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Incompatibilities & Reactivities
Strong oxidizers, fuming nitric acid, sulfuric acid [Note: Polymerizes to dicyclopentadiene upon standing.]
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Measurement Methods
NIOSH 2523
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
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First Aid (See procedures)
Eye: Irrigate immediately
Skin: Soap wash promptly
Breathing: Respiratory support
Swallow: Medical attention immediately
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Respirator Recommendations
NIOSH/OSHA
Up to 750 ppm:
(APF = 10) Any chemical cartridge respirator with organic vapor cartridge(s)
(APF = 50) Any air-purifying, full-facepiece respirator (gas mask) with a chin-style, front- or back-mounted organic vapor canister
(APF = 25) Any powered, air-purifying respirator with organic vapor cartridge(s)
(APF = 10) Any supplied-air respirator
(APF = 50) Any self-contained breathing apparatus with a full facepiece
Emergency or planned entry into unknown concentrations or IDLH conditions:
(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, ingestion, skin and/or eye contact
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Symptoms
Irritation eyes, nose
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Target Organs
Eyes, respiratory system
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See also: INTRODUCTION
See ICSC CARD: 0857 |
