Specification

2
SECTION 4: First Aid Measures
Inhalation: Move victim to fresh air and keep comfortable for breathing. Asthmatic-type symptoms may develop
immediately or up to several hours later. Consult physician if this occurs.
Skin Contact: Wash with soap and water. If skin irritation or rash occurs, consult physician.
Eye Contact: Flush with copious amounts of water for at least 15 minutes. Consult physician.
Ingestion: Do not induce vomiting. Wash mouth with water. Consult physician.
Note to Physician: Eyes: Stain for evidence of corneal injury. If cornea is burned, instill antibiotic steroid preparation frequently.
Workplace vapors have produced reversible corneal epithelial edema impairing vision. Skin: This
compound is a known skin sensitizer. Treat symptomatically as for contact dermatitis or thermal burns. If
burned, treat as thermal burn. Ingestion: Treat symptomatically. MDI has a very low oral toxicity. There is
no specific antidote. Inducing vomiting is contraindicated because of the irritating nature of this compound.
Respiratory: This compound is a known pulmonary sensitizer. Treatment is essentially symptomatic. An
individual having a skin or pulmonary sensitization reaction to this material should be removed from
exposure to any isocyanate.
SECTION 5: Fire-Fighting Measures
Extinguishing Media: Dry chemical, carbon dioxide, foam, water spray for large fires.
Hazardous Combustion Products:
Carbon dioxide, carbon monoxide, oxides of nitrogen, traces of hydrogen cyanide, isocyanate monomer
vapors.
Protection of Firefighters: Full emergency equipment with self-contained breathing apparatus and full protective clothing should be
worn by fire fighters. During a fire isocyanate monomer vapors and other irritating, highly toxic gases may
be generated by thermal decomposition.
Specific Fire or Explosion Hazards:
At temperatures greater than 400˚F isocyanates can polymerize and decompose which can cause pressure
buildup in closed containers. Explosive rupture is possible. Therefore, use cold water to cool fire exposed
containers.
SECTION 6: Accidental Release Measures
Personal Precautions: Wear full protection gear. (See Section 8)
Environmental Precautions: Do not allow product to get into drains, soil, or surface water.
Methods of Clean-up: Evacuate and ventilate spill area; dike spill to prevent entry into water system. Wear full protective
equipment. Absorb with inert material. Spill can be neutralized with the following solution (90% water,8%
ammonia, 2% detergent). Add about 10 parts of neutralizer per part of isocyanate. Scoop into disposal
containers. Do not seal waste containers as CO2 evolution can cause pressure buildup and container
rupture.
SECTION 7: Handling and Storage
Store in tightly closed container to prevent moisture contamination. Care should be taken to avoid contact with skin and eyes. Do not
breathe aerosols or vapors. Keep away from food and drink.
Storage Temperature: 25C
Maximum Storage Period: 6 months
SECTION 8: Exposure Control / Personal Protection
Exposure Guidelines:
Polymeric Diphenylmethane Diisocyanate (9016-87-9)
ACGIH
ACGIH TWA (ppm)
0.005 ppm
OSHA
OSHA PEL (Ceiling) (mg/m³)
0.2 mg/m³
OSHA
OSHA PEL (Ceiling) (ppm)
0.02 ppm