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| Cyclopentadiene | CAS 542-92-7 | ||
| C5H6 | RTECS GY1000000 | ||
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Synonyms & Trade Names 1,3-Cyclopentadiene |
DOT ID & Guide |
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Exposure Limits |
NIOSH REL: TWA 75 ppm (200 mg/m3) | ||
| OSHA PEL: TWA 75 ppm (200 mg/m3) | |||
| IDLH 750 ppm | 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 |
BP: 107°F |
FRZ: -121°F |
Sol: Insoluble |
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VP: 400 mmHg |
IP: 8.56 eV |
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Sp.Gr: 0.80 |
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Fl.P(oc): 77°F |
UEL: ? |
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 |
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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 |
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 |
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| Exposure Routes inhalation, ingestion, skin and/or eye contact | |
| Symptoms Irritation eyes, nose | |
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Target Organs
Eyes, respiratory system |
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| See also: INTRODUCTION |