HEXACHLOROCYCLOPENTADIENE

UN Number: 2646

Information on chemical

Information on chemical

External resources

CAMEO Chemical Database
WISER Substance List

Description

UN number 2646

Physical chemical data

Physical State (20°C) Liquid
Density (kg/m3)
1720 [Kg/m³] at a temperature of 20°C
Molar mass (g/mol) 272.7
Density of gas (kg/m3) 12.15
Boiling Point (°C) 239
Melting Point (°C) 10
Vapour Pressure (Pa)
1241 (104�C) [Pa] at a temperature of 20°C

Behaviour at sea

Additional data

Colour greenish yellow
Odour harch unpleasant

Transportation data

State liquid
Temperature (°C) ambient
IMO class 6.1

Reactivity data

Water Yes
Metal(s) and alloys Yes (Fe & others)

GESAMP Hazard profile

Human toxicity threshold

TLV-TWA 0.01
TEEL-1 (mg/m3) 0.0179 ppm
TEEL-2 (mg/m3) 0.0179 ppm
TEEL-3 (mg/m3) 0.0179 ppm

Ecotoxicity

Incident reports

Incident reports

Year Vessel Location Cargo type
1982 Sam Houston Off New Orleans, USA Package
Emergency Response Guidebook

Emergency Response Guidebook

Guide number: 151

See the guide or download the emergency response guidebook

At sea emergency guide

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

Decision trees

No decision trees available

No additional data

last modified 2020-12-14T09:02:33+00:00