DIPHENYLMETHANE-4,4'-DIISOCYANATE

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

Also known as: DIISOCYANATE DE DIPHENYLMETHANE-4,4

Information on chemical

External resources

CAMEO Chemical Database
WISER Substance List

Description

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)

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

IDHL	10
TLV-TWA	0.02
ERPG-1 (ppm)	0.2 mg
ERPG-2 (ppm)	2 mg
ERPG-3 (ppm)	25 mg

Ecotoxicity

Incident reports

Year	Vessel	Location	Cargo type
1987	Cason	Off North Spain	Package

Emergency Response Guidebook

No guides available

At sea emergency guide