TOLUENE DIISOCYANATE

UN Number: 2078 - CAS Number: 584-84-9

Also known as: DIISOCYANATE DE TOLUENE, Toluene-2,4-Diisocyanate, 2,4-Diisocyanate-1-Methylbenzene, Toluene Diisocyanate
Information on chemical

Information on chemical

External resources

CAMEO Chemical Database
WISER Substance List

Description

UN number 2078
CAS number 584-84-9
Formula C9H6N2O2

Physical chemical data

Physical State (20°C) Liquid
Physical State (25°C) Liquid
Density (kg/m3)
1220 [Kg/m³] at a temperature of 20°C
1224.4 [Kg/m³] at a temperature of 25°C
Molar mass (g/mol) 174.16
Density of gas (kg/m3) 7.74
Solubility (g/L)
37.6 [g/L] at a temperature of 25°C and salinity of 0‰
Boiling Point (°C) 250
Melting Point (°C) 14
Surface tension (mN/m)
25 [mN/m] at a temperature of 25°C
Vapour Pressure (Pa)
3998 [Pa] at a temperature of 20°C
3 [Pa] at a temperature of 25°C
Ignition Temperature (°C) 620
Flash Point (°C) 135
Flash Point (Pensky-Martens closed cup) (°C) 127
Flash Point (Cleveland open cup) (°C) 132
Lower explosivity limit (LEL) (volume %) 0.9
Upper explosivity limit (UEL) (volume %) 9.5
Combus enthalpy (J/Kg) 23900000
Specific heat capacity (J/(Kg·K)) 1653
Henry's constant (mol/(m³·Pa)) 1.11

Behaviour at sea

Persistence (days) 2.7
Log kow 3.74
Log koc 3.87
Aqueous photolysis (Half-life) Not photolysable
Biodegradation in estuary environment (Half-life) (days) 1

Additional data

Colour colourless to light yellow
Odour pleasant 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 D, SD

Transportation data

Transport mode Bulk,Packaged
Package group II
Cargo group 12
State liquid
Temperature (°C) 24� - 38�
Pressure (Pa) under pressure
Family name isocyanates
IMO class 6.1

Reactivity data

Water Yes
Abilities Reacts with water.
Acid(s) Yes
Base(s) Yes
Metal(s) and alloys No
Oxidizing agents Yes
Reducing agents No
Combustibles No
Organic substance Yes

GESAMP Hazard profile

Bioaccumulation in logPow (A1A) 3 - ≥3 and <4
Bioaccumulation in BCF (A1B) 1 - ≥1 and <10
Bioaccumulation (A1) 1 - Very low potential to bioaccumulate
Biodegradation (A2) NR - Not readily biodegradable
Acute aquatic toxicity (B1) (LC/EC/IC50 (mg/l)) 2 - Slightly 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)) 4 - High
Skin irritation/corrosivity (D1) 3 - Corrosive
Eye irritation/corrosivity (D2) 3 - Severely irritating, with irreversible corneal injury
Interference with coastal amenities (E2) S - Sinking substance that would deposit on the seabed, not likely 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

Health Hazard Toxic
IDHL 10
Hazard statements
Health
H315 Causes skin irritation.
H317 May cause an allergic skin reaction.
H319 Causes serious eye irritation.
H330 Fatal if inhaled.
H334 May cause allergy or asthma symptoms or breathing difficulties if inhaled.
H335 May cause respiratory irritation.
H351 Suspected of causing cancer.
Environmental
H412 Harmful to aquatic life with long lasting effects.
Precautionary statements
Prevention
P273 Avoid release to the environment.
P280 Wear protective gloves/protective clothing/eye protection/face protection.
P284 Wear respiratory protection.
Response
P308 + P313 IF exposed or concerned: Get medical advice/attention.
Storage
P403 + P233 Store in a well-ventilated place. Keep container tightly closed.
Disposal
P501 Dispose of contents/container to ...
TLV-TWA 0.005
TEEL-1 (mg/m3) 0.75 ppm
TEEL-2 (mg/m3) 2 ppm
TEEL-3 (mg/m3) 2 ppm

Ecotoxicity

Lowest median lethal concentration (LC50) on fishes (mg/l) 164
Highest no observed effect concentration (NOEC) on crustacean (mg/l) 1.1
Incident reports

Incident reports

Year Vessel Location Cargo type
1987 Herald of Free Entreprise Zeebrugge, Belgium Package
Emergency Response Guidebook

Emergency Response Guidebook

Guide number: 156

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 2020-12-14T09:03:00+00:00