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         1. NIOSH Pocket Guide to Chemical Hazards
      Dicyclopentadiene
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        Dicyclopentadiene
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                Synonyms & Trade Names
                  Bicyclopentadiene, DCPD, 1,3-Dicyclopentadiene dimer, 3a,4,7,7a-Tetrahydro-4,7-methanoindene [Note: Exists in two stereoisomeric forms.]
                CAS No.
                  77-73-6
                RTECS No.
                  PC1050000
                DOT ID & Guide
                  2048 130
                Formula
                  C₁₀H₁₂
                Conversion
                  1 ppm = 5.41 mg/m3
                IDLH
                  N.D.
                  See: IDLH INDEX
                Exposure Limits
                  NIOSH REL
                  TWA 5 ppm (30 mg/m3)
                  OSHA PEL
                  none See Appendix G
                Measurement Methods
                  OSHA PV2098
                  See: NMAM or OSHA Methods
                Physical Description
                  Colorless, crystalline solid with a disagreeable, camphor-like odor. [Note: A liquid above 90°F.]
                Molecular Weight
                  132.2
                Boiling Point
                  342°F
                Freezing Point
                  90°F
                Solubility
                  0.02%
                Vapor Pressure
                  1.4 mmHg
                Ionization Potential
                  ?
                Specific Gravity
                  0.98 (Liquid at 95°F)
                Flash Point
                  (oc) 90°F
                Upper Explosive Limit
                  6.3%
                Lower Explosive Limit
                  0.8%
                  Class IC Flammable Liquid: Fl.P. at or above 73°F and below 100°F.
                  Combustible Solid
                Incompatibilities & Reactivities
                  Oxidizers [Note: Depolymerizes at boiling point and forms two molecules of cyclopentadiene. Must be inhibited and maintained under an inert atmosphere to prevent polymerization.]
                Exposure Routes
                  inhalation, ingestion, skin and/or eye contact
                Symptoms
                  irritation eyes, skin, nose, throat; incoordination, headache; sneezing, cough; skin blisters; In Animals: kidney, lung damage
                Target Organs
                  Eyes, skin, respiratory system, central nervous system, kidneys
                Personal Protection/Sanitation
                (See protection codes)
                Skin:Prevent skin contact
                Eyes:Prevent eye contact
                Wash skin:When contaminated
                Remove:When wet or contaminated
                Change:Daily
                Provide:Eyewash, Quick drench
                First Aid
                (See procedures)
                Eye:Irrigate immediately
                Skin:Soap flush immediately
                Breathing:Respiratory support
                Swallow:Medical attention immediately
                Respirator Recommendations
                Not available.
                Important additional information about respirator selection
                See also
                INTRODUCTION ICSC CARD: 0873
      Page last reviewed: October 30, 2019
        Content source: National Institute for Occupational Safety and Health
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