UN Number: 2489 - CAS Number: 101-68-8

Information on chemical

Information on chemical

External resources

CAMEO Chemical Database
WISER Substance List


UN number 2489
CAS number 101-68-8

Physical chemical data

Physical State (20°C) Solid
Density (kg/m3)
1200 [Kg/m³] at a temperature of 20°C
Molar mass (g/mol) 250.3
Boiling Point (°C) 392
Melting Point (°C) 37
Ignition Temperature (°C) 240
Flash Point (°C) 196

Behaviour at sea

Persistence (days) 2.7

Additional data

Colour white to light yellow
Standard behavior classification D, SD

Transportation data

Transport mode Bulk,Packaged
Package group III
Cargo group 12
State solid
Temperature (°C) -18� to 5�
Pressure (Pa) under pressure
Family name isocyanates

Reactivity data

Water Yes
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) 5 - ≥5 and ≤ ca.7
Bioaccumulation in BCF (A1B) 2 - ≥10 and <100
Bioaccumulation (A1) 2 - Low potential to bioaccumulate
Biodegradation (A2) NR - Not readily biodegradable
Acute aquatic toxicity (B1) (LC/EC/IC50 (mg/l)) 0 - Non-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)) 4 - High
Eye irritation/corrosivity (D2) 2 - Irritating
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

TLV-TWA 0.02
ERPG-1 (ppm) 0.2 mg
ERPG-2 (ppm) 2 mg
ERPG-3 (ppm) 25 mg


Incident reports

Incident reports

Year Vessel Location Cargo type
1987 Cason Off North Spain Package
Emergency Response Guidebook

Emergency Response Guidebook

No guides available

At sea emergency guide

At sea emergency guide

No guides available

Decision trees

Decision trees

No decision trees available

No additional data

last modified 2023-01-16T15:51:08+00:00

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