1,5,9-CYCLODODECATRIENE

UN Number: 2518 - CAS Number: 4904-61-4

Also known as: CYCLODODECATRIENE, Cdt, Cyclododeca-1,5,9-Triene, 1,5,9-Cyclododecatriene

Information on chemical

External resources

CAMEO Chemical Database
WISER Substance List

Description

UN number	2518
CAS number	4904-61-4
Formula	C₁₂H₁₈

Physical chemical data

Physical State (20°C)

Liquid

Physical State (25°C)

Liquid

Density (kg/m3)

890 [Kg/m³] at a temperature of 20°C

840 [Kg/m³] at a temperature of 100°C

Molar mass (g/mol)

162.28

Solubility (g/L)

5 [g/L] at a temperature of 20°C and salinity of 0‰

0.34 [g/L] at a temperature of 25°C and salinity of 0‰

Boiling Point (°C)

231

Melting Point (°C)

-17

Vapour Pressure (Pa)

12265 (160�C) [Pa] at a temperature of 20°C

Flash Point (°C)

Flash Point (Pensky-Martens closed cup) (°C)

Lower explosivity limit (LEL) (volume %)

Upper explosivity limit (UEL) (volume %)

Henry's constant (mol/(m³·Pa))

2847.2

Behaviour at sea

Log kow	5.1
Log koc	3.73
Biodegradation in estuary environment (Half-life) (days)	Not hydrolysable
Bioconcentration factor (BCF)	2000

Additional data

Colour

white to slightly yellow

Odour

pungent

MARPOL pollution category

Category	Description
X	Noxious Liquid Substances which, if discharged into the sea from tank cleaning or deballasting operations, are deemed to present a major hazard to either marine resources or human health and, therefore, justify the prohibition of the discharge into the marine environment.

Marine pollutant

Standard behavior classification

F/FE/E

Transportation data

Transport mode	Bulk,Packaged
Package group	III
Cargo group	30
State	liquid
Temperature (°C)	ambient
Family name	olefins
IMO class	6.1

Reactivity data

Water	No
Acid(s)	Yes
Oxidizing agents	Yes

GESAMP Hazard profile

Bioaccumulation in logPow (A1A)	5 - ≥5 and ≤ ca.7
Bioaccumulation in BCF (A1B)	5 - ≥ 4000
Bioaccumulation (A1)	5 - Very high potential to bioaccumulate
Biodegradation (A2)	NR - Not readily biodegradable
Acute aquatic toxicity (B1) (LC/EC/IC50 (mg/l))	4 - Highly toxic
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))	1 - Slight
Skin irritation/corrosivity (D1)	2 - Irritating
Eye irritation/corrosivity (D2)	1 - Mildly irritating
Specific Health Concern (D3)	A - Aspiration
Interference with coastal amenities (E2)	F - Floating substance, not likely to evaporate or to dissolve quickly
Effects on wildlife and bottom habitats (E3)	3 - Is highly acutely toxic; and/or is severely irritant or corrosive to skin or eyes; and/or is carcinogenic, mutagenic or reprotoxic; and/or is a floater or persistent floater with associated health effects

Human toxicity threshold

Hazard statements

Health

H304	May be fatal if swallowed and enters airways.

Environmental

H410	Very toxic to aquatic life with long lasting effects.

Ecotoxicity

Lowest median lethal concentration (LC50) on crustacean (mg/l)	0.47
Lowest median lethal concentration (LC50) on fishes (mg/l)	2.0

Incident reports

No incident reports available

Emergency Response Guidebook

Guide number: 153

See the guide or download the emergency response guidebook

At sea emergency guide

Emergency schedule: 6.1-02

TOXIC LIQUIDS, INCLUDING SUBSTANCES WHICH MAY LIQUEFY DURING TRANSPORT, NOT COVERED BY OTHER SCHEDULES.

Emergency procedures

Action

Turn ship off-wind.

Spillage on deck

Collect spillage, where practicable, using absorbent material for safe disposal. Wash remainder 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 copious quantities of water or other media to fight fire. 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 clothing (gloves, boots, coveralls, headgear).
Self-contained breathing apparatus.

Remarks by UN no.

METHYLBROMOACETONE
METHYL BROMIDE AND ETHYLENE DIBROMIDE MIXTURE, liquid (UN No. 1647)
TEAR GAS SUBSTANCE, LIQUID, N.O.S. (UN No. 1693)
Spillage may be gaseous.

CHLOROACETYL CHLORIDE (UN No. 1752)
Water-reactive; use water from as far away as practicable.

AMMUNITION, TEAR-PRODUCING, NON-EXPLOSIVE, with neither burster nor
expelling charge, non-fuzed.
METAL CARBONYLS, N.O.S. (UN No. 3281).
Spillage may be gaseous.

Decision trees

No decision trees available

No additional data