DICYCLOPENTADIENE

Chemical Identification
Chemical Identification
CAS # 77-73-6
Formula

C₁₀H₁₂

Synonyms

bicyclopentadiene; DCPD; 1,3-dicyclopentadiene dimer; 3a,4,7,7a-tetrahydro-4,7-methanoindene

Physical Properties
Physical Properties
Physical description A liquid with an acrid odor.
Boiling point 342°F Molecular weight 132.2
Freezing point/melting point 92.5°F Vapor pressure 1.4 mmHg
Flash point 90°F (open cup) Vapor density 4.55
Specific gravity 0.98 Ionization potential
Lower explosive limit (LEL) 0.8% Upper explosive limit (UEL) 6.3%
NFPA health rating 3 NFPA fire rating 3
NFPA reactivity rating 1 NFPA special instruction
Vapor hazard ratio (VHR)
Historical exceedance percentage
Target organs
Monitoring Methods Used by OSHA
Monitoring Methods Used by OSHA
Analyte code (IMIS no.) 0903
Sampling group
Sampler/Sampling media CSC tube (100/50 mg) [SKC 226-01]
Sampling time*

100 min

Sampling volume (TWA)*

10 L

Sampling flow rate (TWA)*

0.1 L/min

Sampling volume (STEL/Peak/C)*
Sampling flow rate (STEL/Peak/C)*
Analytical method instruments GC-FID
Method reference OSHA PV2098 (partially validated)
Notes
Special requirements

* All sampling instructions above are recommended guidelines for OSHA Compliance Safety and Health Officers (CSHOs), please see the corresponding OSHA method reference for complete details.

Wipe Method
Wipe Method
Sampler/Sampling media
Bulk Method
Bulk Method
On-Site Screening Techniques
On-Site Screening Techniques
Device
Model/Type
Sampling information
(see manufacturer instructions)
Exposure Limits
Exposure Limits
OSHA PEL
8-hour TWA
(ST) STEL
(C) Ceiling
Peak
NIOSH REL
Up to 10-hour TWA
(ST) STEL
(C) Ceiling
ACGIH TLV©
8-hour TWA
(ST) STEL
(C) Ceiling
CAL/OSHA PEL
8-hour TWA
(ST) STEL
(C) Ceiling
Peak
PEL-TWA REL-TWA

5 ppm (30 mg/m³)

TLV-TWA

0.5 ppm [2018]

PEL-TWA

5 ppm (30 mg/m³)

PEL-STEL REL-STEL TLV-STEL

1 ppm [2018]

PEL-STEL
PEL-C REL-C TLV-C PEL-C
Skin notation

NA

Skin notation

N

Skin notation

N

Skin notation

N

Notes:

Not established

Notes: Notes: Notes:
Health factors:  See NIH-NLM PubChem. IDLH
Carcinogenic classifications: Not listed Notes:
AIHA emergency response planning guidelines - ERPG-1/ERPG-2/ERPG-3:

0.01 ppm/5 ppm/75 ppm

Additional Resources and Literature References
Additional Resources and Literature References

NOAA: CAMEO Chemicals - Dicyclopentadiene

NIOSH: Pocket Guide to Chemical Hazards - Dicyclopentadiene

Literature References

  • ACGIH: Documentation of the Threshold Limit Values (TLVs) and Biological Exposure Indices (BEIs) - Dicyclopentadiene. See annual publication for most recent information.

Last Updated Date : 12/28/2020