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DICYCLOPENTADIENE ICSC: 0873
Date of Peer Review: October 2005

3a,4,7,7a-Tetrahydro-4,7-methanoindene
3a,4,7,7a-Tetrahydro-4,7-methano-1H-indene
1,3-Dicyclopentadiene
CAS # 77-73-6 C10H12
RTECS # PC1050000 Molecular mass: 132.2
UN # 2048
EC Index # 601-044-00-9
TYPES OF HAZARD / EXPOSURE ACUTE HAZARDS / SYMPTOMS PREVENTION FIRST AID / FIRE FIGHTING
FIRE Flammable.
NO open flames, NO sparks, and NO smoking.
Foam, carbon dioxide, powder, water in large amounts.
EXPLOSION Above 32C explosive vapour/air mixtures may be formed.
Above 32C use a closed system, ventilation, and explosion-proof electrical equipment.
In case of fire: keep drums, etc., cool by spraying with water.
EXPOSURE


Inhalation Cough. Sore throat. Headache.
Ventilation (not if powder), local exhaust, or breathing protection.
Fresh air, rest.
Skin Redness. Pain.
Protective gloves.
Remove contaminated clothes. Rinse and then wash skin with water and soap.
Eyes Redness. Pain.
Safety goggles.
First rinse with plenty of water for several minutes (remove contact lenses if easily possible), then take to a doctor.
Ingestion Abdominal pain. Nausea.
Do not eat, drink, or smoke during work.
Rinse mouth. Refer for medical attention.
SPILLAGE DISPOSAL PACKAGING & LABELLING
Remove all ignition sources. Personal protection: A/P2 filter respirator for organic vapour and harmful dust. Do NOT let this chemical enter the environment. Sweep spilled substance into sealable containers, then remove to safe place.
EU Classification
Symbol: F, Xn, N
R: 11-20/22-36/37/38-51/53
S: (2-)-36/37-61
UN Classification
UN Hazard Class: 3
UN Pack Group: III
EMERGENCY RESPONSE STORAGE
Transport Emergency Card: TEC (R)-30S2048 or 30GF1-III
NFPA Code: H3; F3; R1
Store only if stabilized. Store in an area without drain or sewer access. Fireproof. Cool. Keep in the dark. Separated from strong oxidants.
IPCS
International
Programme on
Chemical Safety
Prepared in the context of cooperation between the International Programme on Chemical Safety and the Commission of the European Communities IPCS, CEC 2005

SEE IMPORTANT INFORMATION ON BACK
DICYCLOPENTADIENE ICSC: 0873
IMPORTANT DATA
PHYSICAL STATE; APPEARANCE:
COLOURLESS CRYSTALS, WITH CHARACTERISTIC ODOUR.

CHEMICAL DANGERS:
The substance can form explosive peroxides. The substance decomposes on heating above 170C. Reacts with oxidants.

OCCUPATIONAL EXPOSURE LIMITS:
TLV: 5 ppm as TWA; (ACGIH 2005).
MAK: 0.5 ppm, 2.7 mg/m; Peak limitation category: I(1); Pregnancy risk group: IIc; (DFG 2005).
ROUTES OF EXPOSURE:
The substance can be absorbed into the body by inhalation and by ingestion.

INHALATION RISK:
A harmful contamination of the air will be reached rather slowly on evaporation of this substance at 20C; on spraying or dispersing, however, much faster.

EFFECTS OF SHORT-TERM EXPOSURE:
The substance is irritating to the eyes, the skin and the respiratory tract.

PHYSICAL PROPERTIES
Boiling point (decomposes): 170-172C
Melting point: 32-34C
Density: 0.98 g/cm
Solubility in water, g/100 ml at 25C: 0.002
Vapour pressure, Pa at 20C: 180
Relative vapour density (air = 1): 4.6-4.7
Relative density of the vapour/air-mixture at 20C (air = 1): 1.01
Flash point: 32C o.c.
Auto-ignition temperature: 503 C
Explosive limits, vol% in air: 0.8-6.3
Octanol/water partition coefficient as log Pow: 2.78
ENVIRONMENTAL DATA
The substance is toxic to aquatic organisms.
NOTES
An added stabilizer or inhibitor can influence the toxicological properties of this substance, consult an expert. Check for peroxides prior to distillation; eliminate if found. Other melting points: 11-13C for technical product.
ADDITIONAL INFORMATION


LEGAL NOTICE Neither the CEC nor the IPCS nor any person acting on behalf of the CEC or the IPCS is responsible for the use which might be made of this information
IPCS, CEC 2005