MAJ CATALYST HARDENER

Move to an area free from risk of further exposure. Administer oxygen or artificial respiration as needed. Obtain medical attention.

Symptoms: Asthmatic-type symptoms may develop and may be immediate or delayed up to several hours. Isocyanate vapors or mist at concentrations above the exposure limits or guidelines can irritate (burning sensation) the mucous membranes in the respiratory tract (nose, throat, and lungs) with symptoms of runny nose, sore throat, coughing, chest discomfort, shortness of breath, and reduced lung function (breathing difficulty). Persons with a preexisting, nonspecific bronchial hyperreactivity can respond to concentrations below the limits or guidelines with similar symptoms as well as asthma attack or asthma-like symptoms. Exposure well above the exposure limits or guidelines may lead to bronchitis, bronchial spasm, and pulmonary edema (fluid in lungs). Chemical or hypersensitivity pneumonitis with flu-like symptoms (e.g. fever, chills) have also been reported.

In case of contact, immediately flush skin with plenty of water while removing contaminated clothing and shoes. Get medical attention immediately. Wash clothing separately before resuse.

Symptoms: May cause skin irritation with symptoms of reddening, itching, and swelling. Can cause sensitization. Persons previously sensitized can experience allergic skin reaction with symptoms of reddening, itching, swelling, and rash.

In case of contact, immediately flush eyes with plenty of water for at least 15 minutes. If easy to do, remove contact lens, if worn.

Symptoms: May cause eye irritation with symptoms of reddening, tearing, stinging, and swelling. May cause temporary corneal injury. Vapor or aerosol may cause irritation with symptoms of burning and tearing.

If swallowed, do NOT induce vomiting. Give victim a glass of water or milk. Call a physician or poison control center immediately. Never give anything by mouth to an unconscious person.

Symptoms: May cause irritation of the digestive tract; Symptoms may include abdominal pain, nausea, vomiting, and diarrhea.

Alcohol Foam, Carbon Dioxide, Dry Chemical, Foam

Closed container may forcibly rupture under extreme heat or when contents are contaminated with water (CO2 formed). During a fire, isocyanate vapors and other irritating, highly toxic gases may be generated by thermal decomposition or combustion. Exposure to heated diisocyanate can be extremely dangerous. 'EMPTY CONTAINERS' retain product residue (liquid and/or vapor) and can be dangerous.

Use cold-water spray to cool fire-exposed containers to minimize the risk of rupture. Large fires can be extinguished with large volumes of water applied from a safe distance, since reaction between water and hot diisocyanate can be vigorous.

Implement site emergency response plan. Evacuate non-emergency personnel. The magnitude of the evacuation depends upon the quantity released, site conditions, and the ambient temperature. Isolate the area and prevent access of unauthorized personnel. Notify management. Call CHEMTREC at 1-800-424-9300 for assistance and advice. Control the source of the leak. Contain the released material by damming, diking, retaining, or diverting into an appropriate containment area. Absorb or pump off as much of the spilled material as possible.

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Absorb or pump off as much of the spilled material as possible. Shovel the absorbent material into an approved metal container (i.e. 55-gallon salvage drum). Decontaminate the spill surface area using a neutralization solution; scrubbing the surface with a broom or brush helps the decontamination solution to penetrate into porous surfaces.

Materials: suitable absorbent material (e.g., vermiculite, kitty litter, Oil-Dri®, etc...), approved metal container (i.e. 55-gallon salvage drum), neutralization solution

Avoid contact with skin and eyes. Do not breathe aerosols or vapors. Warning properties (irritation of eyes, nose, throat, or odor) are not adequate to prevent chronic exposure from inhalation. This material can produce asthmatic sensitization upon either single inhalation exposure to relatively high concentration or upon repeated exposures to lower concentrations. Exposure to vapors of heated isocyanates can be extremely dangerous. Employee education and training in the safe handling of this material is required under the OSHA Hazard Communication Standard (HCS). "EMPTY CONTAINERS" retain product residue (liquid and/or vapor) and can be dangerous. DO NOT PRESSURIZE, CUT, WELD, BRAZE, SOLDER, DRILL, GRIND, OR EXPOSE SUCH CONTAINERS TO HEAT, FLAME, SPARKS, STATIC ELECTRICITY, OR OTHER SOURCES OF IGNITION; THEY MAY EXPLODE AND CAUSE INJURY OR DEATH. Empty drums should be completely drained, properly bunged and promptly returned to a drum reconditioner, or properly disposed of.

Store in tightly sealed containers to prevent moisture contamination. DO NOT reseal if contamination is suspected. Avoid contact with skin and eyes. Store in containers in a dry area.

Avoid contact with skin and eyes.

DO NOT PRESSURIZE, CUT, WELD, BRAZE, SOLDER, DRILL, GRIND, OR EXPOSE SUCH CONTAINERS TO HEAT, FLAME, SPARKS, STATIC ELECTRICITY, OR OTHER SOURCES OF IGNITION

Good industrial hygiene practice dictates that worker protection should be achieved through engineering controls, such as ventilation, whenever feasible. When such controls are not feasible to achieve full protection, the use of respirators and other personal protective equipment is mandated. Curing ovens must be ventilated to prevent emissions into the workplace. If oven off-gases are not vented properly (i.e. they are released into the work area), it is possible to be exposed to vapor. Medical Surveillance: All applicants who are assigned to an isocyanate work area should undergo a pre-placement medical evaluation. A history of eczema or respiratory allergies such as hay fever, are possible reasons for medical exclusion from isocyanate areas. Applicants who have a history of adult asthma should be restricted from work with isocyanates. Applicants with a history of prior isocyanate sensitization should be excluded from further work with isocyanates. A comprehensive annual medical surveillance program should be instituted for all employees who are potentially exposed to diisocyanates. Once a worker has been diagnosed as sensitized to any isocyanate, no further exposure can be permitted.

Nitrile gloves are recommended. Where contact is likely wear chemical resistant gloves.

Liquid chemical goggles. Vapor resistant goggles should be worn when contact lenses are in use. In a splash hazard environment chemical goggles should be used in concert with a full face shield.

A respirator that is recommended or approved for use in isocyanate-containing environments (air-purifying or fresh air-supplied) may be necessary for spray applications or other situations such as high temperature use which may produce inhalation exposures. A supplied-air respirator (either positive pressure or continuous flow-type) is recommended. Before an air-purifying respirator can be used, air monitoring must be performed to measure airborne concentrations. Observe OSHA regulations for respirator use (29 CFR 1910.134). SPRAY APPLICATION: A supplied-air (either positive pressure or continuous flow-type) respirator is mandatory when ONE OR MORE of the following conditions exists: -the airborne isocyanate concentrations are not known; or -the airborne isocyanate monomer concentrations exceed 0.05 ppm averaged over eight (8) hours; or -the airborne polyisocyanate (polymeric, oligomeric) concentrations exceed 5 mg/m3 averaged over 8 hours or 10 mg/m3 averaged over 15 minutes; or -operations are performed in a confined space (See OSHA Confined Space Standard, 29 CFR 1910.146). A properly fitted air-purifying (combination organic vapor and particulate) respirator can be used when ALL of the following conditions are met: -The airborne isocyanate monomer concentrations are known to be below 0.05 ppm averaged over eight (8) hours; and -the airborne polyisocyanate (polymeric, oligomeric) concentrations are known to be below 5 mg/m3 averaged over 8 hours or 10 mg/m3 averaged over 15 minutes; and - a NIOSH-certified End of Service Life Indicator or a change schedule based upon objective information or data is used. NON-SPRAY OPERATIONS: A supplied-air (either positive pressure or continuous flow-type) respirator is mandatory when ONE OR MORE of the following conditions exists: - the airborne isocyanate concentrations are not known; or - the airborne isocyanate monomer concentrations exceed 0.05 ppm averaged over eight (8) hours; or - the airborne polyisocyanate (polymeric, oligomeric) concentrations exceed 5 mg/m3 averaged over 8 hours or 10 mg/m3 averaged over 15 minutes; or - operations are performed in a confined space (See OSHA Confined Space Standard, 29 CFR 1910.146). A properly fitted air-purifying (combination organic vapor and particulate) respirator can be used when ALL of the following conditions are met: -the airborne concentrations of the isocyanate monomer are below 0.05 ppm averaged over eight (8) hours; and - the airborne polyisocyanate (polymeric, oligomeric) concentrations are known to be below 5 mg/m3 averaged over eight (8) hours or 10 mg/m3 averaged over 15 minutes; and - a NIOSH-certified End of Service Life Indicator or a change schedule based upon objective information or data is used.

Where contact is likely wear a chemical suit and rubber boots. Wear chemical resistant shoes. Rubber or plastic apron should be worn.

Exhaust air may need to be cleaned by scrubbers or filters to reduce environmental contamination.

This product is stable under normal storage conditions.

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Contact with moisture, other materials that react with isocyanates, or temperatures above 350 F (177 C), may cause polymerization.

High temperatures or high humidity. Contamination with water. Contact with moisture may cause polymerization.

Water, amines, strong bases, alcohols, copper alloys.

May produce fumes when heated to decomposition as in welding or fire. Fumes may contain: Carbon Monoxide, Carbon Dioxide, oxides of Nitrogen, traces of Hydrogen Cyanide, and isocyanate vapors or aerosols.