DICYCLOPENTADIENE

UN Number: 2048 - CAS Number: 77-73-6

Also known as: Dicyclopentadiene, Cyclopentadiene Dimer, Bicyclopentadiene, 1,3-Cyclopentadiene Dimer
Information on chemical

Information on chemical

External resources

CAMEO Chemical Database
WISER Substance List

Description

UN number 2048
CAS number 77-73-6
Formula C10H12

Physical chemical data

Physical State (20°C) Liquid
Physical State (25°C) Solid
Density (kg/m3)
978 [Kg/m³] at a temperature of 20°C
930.2 [Kg/m³] at a temperature of 35°C
Kinematic viscosity (cSt)
0.79 [cSt] at a temperature of 21°C
Molar mass (g/mol) 132.31
Density of gas (kg/m3) 5.934
Solubility (g/L)
20 [g/L] at a temperature of 25°C and salinity of 0‰
Boiling Point (°C) 170
Melting Point (°C) 32
Critical temperature (°C) 659.95
Critical pressure (Pa) 3060000
Vapour Pressure (Pa)
1300 [Pa] at a temperature of 20°C
1300 [Pa] at a temperature of 37.7°C
Flash Point (°C) 104
Flash Point (Cleveland open cup) (°C) 32
Lower explosivity limit (LEL) (volume %) 0.8
Upper explosivity limit (UEL) (volume %) 6.3
Combus enthalpy (J/Kg) 43700000
Specific heat capacity (J/(Kg·K)) 1700
Henry's constant (mol/(m³·Pa)) 1084.2

Behaviour at sea

Log kow 2.78
Log koc 3.18
Aqueous photolysis (Half-life) 32
Biodegradation in marine environment (Half-life) (days) Not biodegradable
Bioconcentration factor (BCF) 100

Additional data

Colour colourless
Odour camphor odour
MARPOL pollution category
Category Description
Y Noxious Liquid Substances which, if discharged into the sea from tank cleaning or deballasting operations, are deemed to present a hazard to either marine resources or human health or cause harm to amenities or other legitimate uses of the sea and therefore justify a limitation on the quality and quantity of the discharge into the marine environment.
Standard behavior classification FE

Transportation data

Package group III
Cargo group 30
State liquid
Temperature (°C) ambient
Pressure (Pa) ambient
Family name olefins
IMO class 3.3

Reactivity data

Water No
Acid(s) Yes
Base(s) No
Metal(s) and alloys No
Oxidizing agents No
Reducing agents No
Combustibles No
Organic substance No

GESAMP Hazard profile

Bioaccumulation in logPow (A1A) 3 - ≥3 and <4
Bioaccumulation (A1) 3 - Moderate potential to bioaccumulate
Biodegradation (A2) NR - Not readily biodegradable
Acute aquatic toxicity (B1) (LC/EC/IC50 (mg/l)) 3 - Moderately toxic
Chronic aquatic toxicity (B2) (NOEC (mg/l)) 0 - Negligible
Acute mammalian toxicity by swallowing (C1) (LD50 (mg/kg)) 0 - Negligible
Acute mammalian toxicity by skin penetration (C2) (LD50 (mg/kg)) 0 - Negligible
Acute mammalian toxicity by inhalation (C3) (LC50 (mg/l)) 0 - Negligible
Skin irritation/corrosivity (D1) 2 - Irritating
Eye irritation/corrosivity (D2) 2 - Irritating
Interference with coastal amenities (E2) FE - Floater/Evaporator
Effects on wildlife and bottom habitats (E3) 2 - Is a persistent floater; and/or is moderately acutely toxic; and/or is irritating to skin and/or eyes; and/or has long-term health effects other than carcinogenicity, mutagenicity or reprotoxicity; and/or is highly flammable; and/or is flammable and is a floater with evaporative properties

Human toxicity threshold

Environmental Hazard Flammable Toxic
Hazard statements
Physical
H225 Highly flammable liquid and vapour.
Health
H302 Harmful if swallowed.
H315 Causes skin irritation.
H319 Causes serious eye irritation.
H330 Fatal if inhaled.
H335 May cause respiratory irritation.
Environmental
H411 Toxic to aquatic life with long lasting effects.
Precautionary statements
Prevention
P210 Keep away from heat/sparks/open flames/hot surfaces. No smoking.
P243 Take precautionary measures against static discharge.
P260 Do not breathe dust/fume/gas/mist/vapours/spray.
P273 Avoid release to the environment.
P280 Wear protective gloves/protective clothing/eye protection/face protection.
Response
P301 + P310 IF SWALLOWED: Immediately call a POISON CENTER or doctor/physician.
P303 + P361 + P353 IF ON SKIN (or hair): Remove/Take off immediately all contaminated clothing. Rinse skin with water/shower.
P304 + P340 IF INHALED: Remove victim to fresh air and keep at rest in a position comfortable for breathing.
P305 + P351 + P338 IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.
P330 Rinse mouth.
P391 Collect spillage.
ERPG-1 (ppm) 0.01
ERPG-3 (ppm) 75

Ecotoxicity

Lowest median lethal concentration (LC50) on algae (mg/l) 27
Lowest median lethal concentration (LC50) on crustacean (mg/l) 8.0
Lowest median lethal concentration (LC50) on fishes (mg/l) 4.3
Highest no observed effect concentration (NOEC) on algae (mg/l) 18
Highest no observed effect concentration (NOEC) on crustacean (mg/l) 3.2
Assessment factor (AF)
100 on the Short term
100 on the Long term
Predicted No Effect Concentration (PNEC) (µg/l)
43 [µg/l] on the Short term
32 [µg/l] on the Long term
Incident reports

Incident reports

No incident reports available

Emergency Response Guidebook

Emergency Response Guidebook

Guide number: 130P

See the guide or download the emergency response guidebook

At sea emergency guide

At sea emergency guide

Emergency schedule: 3-07

• 1 CLASS 3.1
FLAMMABLE LIQUIDS, FLASHPOINT BELOW -18°C Closed Cup; NOT COVERED BY OTHER SCHEDULES; IMMISCIBLE WITH WATER.
• 2 CLASS 3.2
FLAMMABLE LIQUIDS, FLASHPOINT BETWEEN -18°C AND 23°C Closed Cup; NOT COVERED BY OTHER SCHEDULES; IMMISCIBLE WITH WATER.
• 3 CLASS 3.3
FLAMMABLE LIQUIDS, FLASHPOINT BETWEEN 23°C AND 61°C Closed Cup; NOT COVERED BY OTHER SCHEDULES; IMMISCIBLE WITH WATER.

Emergency procedures

Action

Avoid all sources of ignition (e.g. naked lights, unprotected light bulbs, electric handtools).

Spillage on deck

Wash spillage overboard with copious quantities of water.

Spillage under deck

Provide adequate ventilation. Collect spillage, where practicable, using absorbent material, for safe disposal.

Fire on deck

Use water spray, foam or dry chemical. Do NOT use water jet. If possible remove receptacles likely to be involved or keep them cool with copious quantities of water.

Fire under deck

Batten down; use ship's fixed fire-fighting installation. Otherwise adopt action as for "On deck".

Special equipment to be carried

Protective gloves and boots.
Self-contained breathing apparatus.
Spray nozzles.

Remarks by UN no.

• 2-ETHYLBUTYL ACETATE (UN No. 1177)
Self-contained breathing apparatus not necessary - use goggles for eye protection.

• ISOPROPYL NITRATE (UN No. 1222)
In fire, explosion hazard.

• PINE OIL (UN No. 1272)
Self-contained breathing apparatus not necessary - use goggles for eye protection.

• ZIRCONIUM SUSPENDED IN A FLAMMABLE LIQUID (UN No. 1308)
Spillage is liable to self-ignition. Use water spray from as many hoses as possible from as far away as practicable.

• normal-PROPYL NITRATE (UN No. 1865)
In fire, explosion hazard.

• CYCLOPENTANOL (UN No. 2244)
• normal-UNDECANE (UN No. 2330)
Self-contained breathing apparatus not necessary - use goggles for eye protection.

• 3-BROMOPROPYNE (UN No. 2345)
In fire, explosion hazard. Fight fire from a protected position.

• TETRAMETHYLSILANE (UN No. 2749)
Possible self-ignition at ambient temperatures.

• ELEVATED TEMPERATURE LIQUID, FLAMMABLE, N.O.S. (UN No. 3256), with
flashpoint above 61°C c.c., at or above its flashpoint .
Spilled liquid may be very hot and remain above its flashpoint for some time after spillage.

Decision trees

Decision trees

No decision trees available

No additional data

last modified 2020-12-14T09:02:19+00:00