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NIOSH

DICYCLOPENTADIENE

ICSC: 0873

3a,4,7,7a-Tetrahydro-4,7-methanoindene
3a,4,7,7a-Tetrahydro-4,7-methano-1H-indene
1,3-Dicyclopentadiene
C10H12
Molecular mass: 132.2
ICSC # 0873 		CAS # 77-73-6
RTECS # PC1050000
UN # 2048
EC # 601-044-00-9
October 19, 2005 Validated

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 32°C explosive vapour/air mixtures may be formed.
Above 32°C 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

STORAGE

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.
Store only if stabilized. Store in an area without drain or sewer access. Fireproof. Cool. Keep in the dark. Separated from strong oxidants.

F symbol
Xn symbol
N symbol
R: 11-20/22-36/37/38-51/53
S: 2-36/37-61
UN Hazard Class: 3
UN Packing Group: III
ICSC: 0873 Prepared in the context of cooperation between the International Programme on Chemical Safety & the Commission of the European Communities (C) IPCS CEC 1994. No modifications to the International version have been made except to add the OSHA PELs, NIOSH RELs and NIOSH IDLH values.

DICYCLOPENTADIENE

ICSC: 0873

I

M

P

O

R

T

A

N

T


D

A

T

A

PHYSICAL STATE; APPEARANCE:
COLOURLESS CRYSTALS , WITH CHARACTERISTIC ODOUR.

PHYSICAL DANGERS:


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

OCCUPATIONAL EXPOSURE LIMITS:
TLV: 5 ppm as TWA; (ACGIH 2005).
MAK: 0.5 ppm, 2.7 mg/m3;
Peak limitation category: I(1); Pregnancy risk group: D;
(DFG 2008).
OSHA PEL†: none
NIOSH REL: TWA 5 ppm (30 mg/m3)
NIOSH IDLH: N.D. See: IDLH INDEX


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 20°C; 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 .

EFFECTS OF LONG-TERM OR REPEATED EXPOSURE:

PHYSICAL
PROPERTIES

Boiling point (decomposes): 170-172°C
Melting point: 32-34°C
Density: 0.98
g/cm3
Solubility in water, g/100 ml at 25°C: 0.002
Vapour pressure, Pa at 20°C: 180
Relative vapour density (air = 1): 4.6-4.7
Relative density of the vapour/air-mixture at 20°C (air = 1): 1.01
Flash point: 32°C 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.

N O T E S

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: 11-13°C for technical product.
Transport Emergency Card: TEC (R)-30S2048 or 30GF1-III

NFPA Code: H3; F3; R1
Card has been partially updated in November 2008: see Occupational Exposure Limits.

ADDITIONAL INFORMATION



ICSC: 0873 DICYCLOPENTADIENE
(C) IPCS, CEC, 1994
IMPORTANT LEGAL NOTICE: Neither NIOSH, the CEC or the IPCS nor any person acting on behalf of NIOSH, the CEC or the IPCS is responsible for the use which might be made of this information. This card contains the collective views of the IPCS Peer Review Committee and may not reflect in all cases all the detailed requirements included in national legislation on the subject. The user should verify compliance of the cards with the relevant legislation in the country of use. The only modifications made to produce the U.S. version is inclusion of the OSHA PELs, NIOSH RELs and NIOSH IDLH values.
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