International Chemical Safety Cards

METHYLENE BISPHENYL ISOCYANATE ICSC: 0298

METHYLENE BISPHENYL ISOCYANATE
MDI
Diphenylmethane-4.4'-diisocyanate
bis(1,4-Isocyanatophenyl)methane
C15H10N2O2/OCNC6H4CH2C6H4NCO
Molecular mass: 250.3
CAS # 101-68-8
RTECS # NQ9350000
ICSC # 0298
UN # 2489
EC # 615-005-01-6
TYPES OF
HAZARD/
EXPOSURE 		ACUTE HAZARDS/
SYMPTOMS 		PREVENTION FIRST AID/
FIRE FIGHTING
FIRE Combustible. Gives off irritating or toxic fumes (or gases) in a fire.
NO open flames.
Powder, carbon dioxide.
EXPLOSION


EXPOSURE
AVOID ALL CONTACT!
IN ALL CASES CONSULT A DOCTOR!
  • INHALATION
    		• Headache. Nausea. Shortness of breath. Sore throat.
    		Ventilation (not if powder). Local exhaust or breathing protection.
    		Fresh air, rest. Half-upright position. Artificial respiration if indicated. Refer for medical attention.
  • SKIN
    		• Redness.
    		Protective gloves. Protective clothing.
    		Remove contaminated clothes. Rinse skin with plenty of water or shower. Refer for medical attention.
  • EYES
    		• Pain. May cause corneal damage.
    		Safety goggles or face shield.
    		First rinse with plenty of water for several minutes (remove contact lenses if easily possible), then take to a doctor.
  • INGESTION

    		• Do not eat, drink, or smoke during work.
    		Rinse mouth. Do NOT induce vomiting. Refer for medical attention.
    SPILLAGE DISPOSAL STORAGE PACKAGING & LABELLING
    Evacuate danger area! Consult an expert! Sweep spilled substance into containers; if appropriate, moisten first to prevent dusting. Carefully collect remainder, then remove to safe place (extra personal protection: self-contained breathing apparatus).
    		Separated from incompatible materials (see Chemical Dangers), food and feedstuffs. Cool. Dry. Keep in the dark.
    		Unbreakable packaging; put breakable packaging into closed unbreakable container. Do not transport with food and feedstuffs.
    Xn symbol
    R: 20-36/37/38-42
    S: (2-)26-28-38-45
    Note: C
    UN Hazard Class: 6.1
    UN Packing Group: III
    SEE IMPORTANT INFORMATION ON BACK
    ICSC: 0298 Prepared in the context of cooperation between the International Programme on Chemical Safety & the Commission of the European Communities © IPCS CEC 1993 No modifications to the International version have been made except to add the OSHA PELs, NIOSH RELs and IDLH values.

    International Chemical Safety Cards

    METHYLENE BISPHENYL ISOCYANATE ICSC: 0298

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    PHYSICAL STATE; APPEARANCE:
     WHITE TO PALE YELLOW CRYSTALS OR FLAKES.

    PHYSICAL DANGERS:

    CHEMICAL DANGERS:
     The substance may polymerize under the influence of temperatures above 204°C. On combustion, forms toxic and corrosive fumes including nitrogen oxides and hydrogen cyanide (see ICSC # 0492). Reacts readily with water to form insoluble polyureas. Reacts violently with acids, alcohols, amines, bases and oxidants causing fire and explosion hazard.

    OCCUPATIONAL EXPOSURE LIMITS (OELs):
     TLV: 0.005 ppm; 0.05 mg/m3 as TWA (ACGIH 1992-1993).
    OSHA PEL: C 0.2 mg/m3 (0.02 ppm)
    NIOSH REL: TWA 0.05 mg/m3 (0.005 ppm) C 0.2 mg/m3 (0.020 ppm) 10-minute
    NIOSH IDLH: 75 mg/m3


    		ROUTES OF EXPOSURE:
     The substance can be absorbed into the body by inhalation.

    INHALATION RISK:
     Evaporation at 20°C is negligible; a harmful concentration of airborne particles can, however, be reached quickly.

    EFFECTS OF SHORT-TERM EXPOSURE:
     Tear drawing. The substance irritates the eyes, the skin and the respiratory tract. Inhalation of the substance may cause lung oedema (see Notes).

    EFFECTS OF LONG-TERM OR REPEATED EXPOSURE:
     Repeated or prolonged contact may cause skin sensitization. Repeated or prolonged inhalation exposure may cause asthma (see Notes).
    PHYSICAL
    PROPERTIES
    Boiling point at 100 kPa: 314°C
    Melting point: 37°C
    Relative density (water = 1): 1.2
    Solubility in water: reaction
    		Vapour pressure, Pa at 20°C: negligible
    Relative vapour density (air = 1): 8.6
    Flash point: 196°C c.c.
    Auto-ignition temperature: 240°C
    ENVIRONMENTAL
    DATA
    N O T E S
    The symptoms of lung oedema often do not become manifest until a few hours have passed and they are aggravated by physical effort. Rest and medical observation are therefore essential. Immediate administration of an appropriate spray, by a doctor or a person authorized by him/her, should be considered. The symptoms of asthma often do not become manifest until a few hours have passed and they are aggravated by physical effort. Rest and medical observation are therefore essential. Anyone who has shown symptoms of asthma due to this substance should avoid all further contact with this substance. MDI may sensitize workers so that they react to other isocyanates (asthma). Do NOT take working clothes home. Caradate 30, Desmodur 44, Hylene M 150, Isonate, Nacconate 300, NCI-C50668, Rubinate 44 are trade names.
    Transport Emergency Card: TEC (R)-634
    ADDITIONAL INFORMATION


    ICSC: 0298 METHYLENE BISPHENYL ISOCYANATE
    © IPCS, CEC, 1993
    IMPORTANT LEGAL NOTICE: Neither NIOSH, the CEC or the IPCS nor any person acting on behalf of NIOSH, the CEC or the IPCS is responsible for the use which might be made of this information. This card contains the collective views of the IPCS Peer Review Committee and may not reflect in all cases all the detailed requirements included in national legislation on the subject. The user should verify compliance of the cards with the relevant legislation in the country of use. The only modifications made to produce the U.S. version is inclusion of the OSHA PELs, NIOSH RELs and IDLH values.