DICYCLOPENTADIENE

1,3-CPD

DCPD

BICYCLOPENTADIENE

BISCYCLOPENTADIENE

CYCLOPENTADIENE DIMER

1,3-CYCLOPENTADIENE, DIMER

alpha-DICYCLOPENTADIENE (endo isomer)

1,3-DICYCLOPENTADIENE DIMER

DICYKLOPENTADIEN (Czech)

DIMER CYKLOPENTADIENU (Czech)

4,7-METHANOINDENE, 3a,4,7,7a-TETRAHYDRO-

4,7-METHANO-1H-INDENE, 3a,4,7,7a-TETRAHYDRO-

3a,4,7,7a-TETRAHYDRO-4,7-METHANOINDENE

TRICYCLO(5,2,1,0)-3,8-DECADIENE

77-73-6

PC 1050000

2048-Dicyclopentadiene

C10-H12

130-FLAMMABLE LIQUIDS (NON-POLAR / WATER-IMMISCIBLE / NOXIOUS)(for UN/NA Number2048)

Dicyclopentadiene is used as a flame retardant for plastics, as a chemical intermediate for chlorinated hydrocarbon insecticides, as a hardener and dryer in linseed as well as soybean oil, as a repellent for animals, and in the production of EPDM elastomers, metallocenes, resins, varnishes, and paints (ACGIH, 1991; Clayton & Clayton, 1994; (HSDB, 1996); Lewis, 1993).

May cause toxic effects if inhaled or absorbed through skin.

Inhalation or contact with material may irritate or burn skin and eyes.

Fire will produce irritating, corrosive and/or toxic gases.

Vapors may cause dizziness or suffocation.

Runoff from fire control or dilution water may cause pollution.

Move victim to fresh air.

Call 911 or emergency medical service.

Give artificial respiration if victim is not breathing.

Administer oxygen if breathing is difficult.

Remove and isolate contaminated clothing and shoes.

In case of contact with substance, immediately flush skin or eyes with running water for at least 20 minutes.

Wash skin with soap and water.

Keep victim warm and quiet.

In case of burns, immediately cool affected skin for as long as possible with cold water. Do not remove clothing if adhering to skin.

Effects of exposure (inhalation, ingestion or skin contact) to substance may be delayed.

Ensure that medical personnel are aware of the material(s) involved and take precautions to protect themselves.

FIRST AID

GENERAL -

INHALATION EXPOSURE -

DERMAL EXPOSURE -

EYE EXPOSURE -

ORAL EXPOSURE -

The minimum lethal human dose to this agent has not been delineated.

The maximum tolerated human exposure to this agent has not been delineated.

In one occupational situation, workers were accidentally exposed to an unknown concentration of dicyclopentadiene vapor for 5 months. Workers complained of headache for the first two months, but were asymptomatic for the following three months despite continued exposure (ACGIH, 1991; Hathaway et al, 1991).

In a volunteer study, two subjects were exposed to 1 ppm for seven minutes. This produced mild throat and eye irritation. One subject had olfactory fatigue after 24 minutes. Exposure to 5.5 ppm for 30 minutes produced no olfactory fatigue (ACGIH, 1991; Hathaway et al, 1991).

Animal studies demonstrate a wide sensitivity among various species. Acute toxicity also varies greatly by route of exposure. Most followed a general pattern of symptoms, with eye irritation, loss of coordination, and convulsions leading to death (ACGIH, 1991; Hathaway et al, 1991).

ACGIH (American Conference of Governmental Industrial Hygienists, 2010): Not Listed ; Listed as: Dicyclopentadiene

ACGIH (American Conference of Governmental Industrial Hygienists, 2010): Not Listed ; Listed as: Dicyclopentadiene

EPA (U.S. Environmental Protection Agency, 2011): Not Listed

IARC (International Agency for Research on Cancer (IARC), 2016; International Agency for Research on Cancer, 2015; IARC Working Group on the Evaluation of Carcinogenic Risks to Humans, 2010; IARC Working Group on the Evaluation of Carcinogenic Risks to Humans, 2010a; IARC Working Group on the Evaluation of Carcinogenic Risks to Humans, 2008; IARC Working Group on the Evaluation of Carcinogenic Risks to Humans, 2007; IARC Working Group on the Evaluation of Carcinogenic Risks to Humans, 2006; IARC, 2004): Not Listed

NIOSH (National Institute for Occupational Safety and Health, 2007): Not Listed ; Listed as: Dicyclopentadiene

MAK (DFG, 2002): Not Listed

NTP (U.S. Department of Health and Human Services, Public Health Service, National Toxicology Project ): Not Listed

Not Listed

References: ITI, 1988 Lewis, 1992 RTECS, 1996

CONVERSION FACTORS

1 ppm = 5.49 mg/m(3) ((HSDB, 1996))

1 ppm = 5.41 mg/m(3) (Clayton & Clayton, 1994)

1 mg/m(3) = 0.18 ppm ((HSDB, 1996))

Editor's Note: The listed values are recommendations or guidelines developed by ACGIH(R) to assist in the control of health hazards. They should only be used, interpreted and applied by individuals trained in industrial hygiene. Before applying these values, it is imperative to read the introduction to each section in the current TLVs(R) and BEI(R) Book and become familiar with the constraints and limitations to their use. Always consult the Documentation of the TLVs(R) and BEIs(R) before applying these recommendations and guidelines.

Not Listed

Listed as: Dicyclopentadiene

REL:

IDLH: Not Listed

Not Listed

Not Listed

Not Listed

Not Listed

Not Listed

Editor's Note: The D, F, and K series waste numbers and Appendix VIII to Part 261 -- Hazardous Constituents were not included. Please refer to 40 CFR Part 261.

Not Listed

Listed as: Dicyclopentadiene

Effective Date for Reporting Under 40 CFR 372.30: 1/1/95

Lower Thresholds for Chemicals of Special Concern under 40 CFR 372.28:

Not Listed

Listed as: 4,7-Methano-1H-indene, 3a,4,7,7a-tetrahydro-

Hazardous materials descriptions and proper shipping name: Dicyclopentadiene

Proper Shipping Name: Dicyclopentadiene

UN Number: 2048

Listed as: Dicyclopentadiene

Hazard Ratings:

In large amounts, this chemical is shipped in drums and tank cars (OHM/TADS , 1996).

Dicyclopentadiene should be stored in a cool, ventilated location. Conditions should be periodically inspected ((HSDB, 1996)).

Storage temperature should be ambient ((CHRIS, 1996)).

Open flame arrester venting should be utilized ((CHRIS, 1996)).

This compound should be isolated from oxidizers, direct sunlight, and any fire hazard ((HSDB, 1996)).

Wear positive pressure self-contained breathing apparatus (SCBA).

Structural firefighters' protective clothing will only provide limited protection.

Specific recommendations and test data for this chemical were not found in the available manufacturers' product literature. A complete list of consulted manufacturers and references is presented below.

POTENTIAL FIRE OR EXPLOSION HAZARDS - EMERGENCY RESPONSE GUIDEBOOK, GUIDE 130 (ERG, 2004)

Dicyclopentadiene is combustible in its liquid and solid states; it is a fire hazard when exposed to flame or heat (Lewis, 1992; Lewis, 1993; NIOSH , 1996).

When in solid form, this compound will sink in water, when in liquid form it will float in a slick (OHM/TADS , 1996).

It can flashback along a vapor trail ((CHRIS, 1996)).

Dicyclopentadiene releases acrid fumes and smoke when heated to decomposition (Lewis, 1992).

Listed as: Dicyclopentadiene

Flammability Rating: 3

CAUTION: All these products have a very low flash point: Use of water spray when fighting fire may be inefficient.

Dry chemical, CO2, water spray or regular foam.

Water spray, fog or regular foam.

Do not use straight streams.

Move containers from fire area if you can do it without risk.

Fight fire from maximum distance or use unmanned hose holders or monitor nozzles.

Cool containers with flooding quantities of water until well after fire is out.

Withdraw immediately in case of rising sound from venting safety devices or discoloration of tank.

ALWAYS stay away from tanks engulfed in fire.

For massive fire, use unmanned hose holders or monitor nozzles; if this is impossible, withdraw from area and let fire burn.

Listed as: Dicyclopentadiene

Extinguishing Method(s): 1

Consider initial downwind evacuation for at least 300 meters (1000 feet).

If tank, rail car or tank truck is involved in a fire, ISOLATE for 800 meters (1/2 mile) in all directions; also, consider initial evacuation for 800 meters (1/2 mile) in all directions.

CALL Emergency Response Telephone Number on Shipping Paper first. If Shipping Paper not available or no answer, refer to appropriate telephone number:

For additional details see the section entitled "WHO TO CALL FOR ASSISTANCE" under the ERG Instructions.

As an immediate precautionary measure, isolate spill or leak area for at least 50 meters (150 feet) in all directions.

Keep unauthorized personnel away.

Stay upwind.

Keep out of low areas.

Ventilate closed spaces before entering.

Listed as Dicyclopentadiene

ERPG-1 (units = ppm): 0.01

ERPG-2 (units = ppm): 5

ERPG-3 (units = ppm): 75

Under Ballot, Review, or Consideration: No

Definitions:

Listed as Dicyclopentadiene

TEEL-0 (units = ppm): 0.01

TEEL-1 (units = ppm): 0.01

TEEL-2 (units = ppm): 5

TEEL-3 (units = ppm): 75

Definitions:

Not Listed

Not Listed

SPILL OR LEAK PRECAUTIONS - EMERGENCY RESPONSE GUIDEBOOK, GUIDE 130 (ERG, 2004)

RECOMMENDED PROTECTIVE CLOTHING - EMERGENCY RESPONSE GUIDEBOOK, GUIDE 130 (ERG, 2004)

Keep ignition sources out of the area. If possible, stop the leak. Employ water spray to keep vapors down. Utilize dikes to contain the spill. Make sure this material stays out of sewers and water sources (AAR, 1994).

For in situ amelioration (in bodies of water), if in solid form utilize a dredge; if in liquid form use oil skimming equipment in conjunction with sorbent foams to treat the slick (OHM/TADS , 1996).

Small amounts can be collected by brushing the material onto a sheet of paper (if in solid form) (ITI, 1988).

LARGE SPILL PRECAUTIONS - EMERGENCY RESPONSE GUIDEBOOK, GUIDE 130 (ERG, 2004)

Small quantities, collected on a piece of paper, should be placed on an iron plate and burned within a fume hood. Larger amounts may be placed in a package stuffed with a flammable material and burned in a furnace (or) dissolved in a combustible solvent and then sprayed into a furnace for incineration (ITI, 1988; OHM/TADS , 1996).

Waste management activities associated with material disposition are unique to individual situations. Proper waste characterization and decisions regarding waste management should be coordinated with the appropriate local, state, or federal authorities to ensure compliance with all applicable rules and regulations.

When released to the atmosphere, dicyclopentadiene will likely react with photochemically produced hydroxyl radicals; the half-life for this process is estimated to be 3.1 hours. Another important route is destruction via the gas phase reaction with ozone; estimated half-life of 48 minutes. Wet and dry deposition as well as direct photochemical degradation are not thought to be important routes ((HSDB, 1996)).

SURFACE WATER

TERRESTRIAL

A BCF of 93.2 can be calculated for this compound; this indicates that dicyclopentadiene may bioconcentrate in fish and other aquatic organisms ((HSDB, 1996)).

This compound exists in two stereoisomeric forms (exo and endo). Commercial mixtures consist of primarily the endo isomer ((HSDB, 1996); NIOSH , 1996).

LIQUID: 0.979 (at 20/20 degrees C) (ITI, 1988; Lewis, 1993)

0.9302 (at 35/4 degrees C) ((HSDB, 1996))

0.976 g/mL (at 35 degrees C) (ACGIH, 1991) Lewis, 1992)

0.9302 g/mL (at 20 degrees C) (Clayton & Clayton, 1994)

LIQUID: 0.98 g/mL (at 95 degrees F) (NIOSH , 1996)

LIQUID: 0.978 g/mL (at 20 degrees C) ((CHRIS, 1996))

35 degrees C; 95 degrees F (Clayton & Clayton, 1994)

90 degrees F (NIOSH , 1996)

32 degrees C (Clayton & Clayton, 1994)

32.9 degrees C (Lewis, 1992)

33.6 degrees C (ACGIH, 1991; Lewis, 1993)

91 degrees F (NFPA, 1994)

166.6 degrees C (Lewis, 1992)

170 degrees C; 338 degrees F; 443 degrees K (ACGIH, 1991; (CHRIS, 1996))

172 degrees C; 342 degrees F (Lewis, 1993; NFPA, 1994)

64-65 degrees C (at 14 mmHg) ((HSDB, 1996))

0.8% (ACGIH, 1991; NIOSH , 1996)

6.3% (ACGIH, 1991; NIOSH , 1996)

Dicyclopentadiene is practically insoluble in water (Clayton & Clayton, 1994; Lewis, 1993).

0.020 lb dicyclopentadiene/100 lb water (at 68.02 degrees F) (0.02%) ((HSDB, 1996); NIOSH , 1996)

This compound is soluble in acetic acid, acetone, alcohol (greater than 10%), dichloromethane, ether (greater than 10%), ethyl acetate, n-hexane and toluene (Clayton & Clayton, 1994; (HSDB, 1996); Lewis, 1993).

2.43 (at 40 degrees C) ((HSDB, 1996))

-18,800 btu/lb; -10,400 cal/g; -437 x 10(5) J/kg ((CHRIS, 1996))

0.5 kJ/mol ((HSDB, 1996))

1.5073 (at 31 degrees C) (Lewis, 1993)

1.5050 (at 20 degrees C) (Clayton & Clayton, 1994)

0.736 cP (at 70 degrees F) (estimated) ((HSDB, 1996))