MATERIAL SAFETY DATA SHEET - System 1, Part A
Complies with OSHA Hazard Communication Standard, 29 CFR 1910.1200

IDENTITY
Product Code: System 1 (Part A)
Chemical names: Isocyanic Acid, Polymethylene, polyphenylene ester
CAS number: 9016-87-9

N.F.P.A. & H.M.I.S. Rating

SECTION I - MANUFACTURER

SECTION II - HAZARDOUS INGREDIENTS/IDENTITY INFORMATION
None of the components of the mixture are considered Hazardous Material or carcinogens (1910.1200 Hazard Communication (d)(4).

Technical shipping name: Methylene dipheyl diisocyanate

TRANSPORTATION INFORMATION
DOT Classification: 9,
National Motor Freight (NMF-60000):

SECTION III - PHYSICAL CHEMICAL CHARACTERISTICS
Boiling Point: 406°F Specific Gravity (H20=1):1.24 @ 77F
Vapor Pressure (mm Hg): <10 Melting Point/Freezing Point: <32F
Vapor Density (Air = 1): 8.5 % Volatile by Volume: negligible
Solubility: not soluble in water
Appearance: Black

SECTION IV - FIRE AND EXPLOSION HAZARD DATA
Flash Point (Pensky-Martens Closed Cup): 393°F
Flammable Limits: N/A
Extinguishing Media: Dry chemical, foam, CO2. Treat as Class B fire.
Special Fire Fighting Procedures: Full emergency equipment with self-contained breathing apparatus and full protective clothing should be worn by firefighters. During a fire, MDI vapors and other irritating, highly toxic gases may be generated by thermal decomposition or combustion. At temperature greater than 400F (204C) polymeric MDI can polymerize and decompose which can cause pressure build-up in closed containers. Explosion rupture is possible. Therefore, us cold water to cool fire-exposed containers.
Unusual Fire and Explosion Hazards: Pressure build up at high heat in closed containers.

SECTION V - REACTIVITY DATA
Stability: This is a stable material
Conditions to Avoid: Hazardous polymerization, May occur, Contact with moisture, other materials which react with isocyanates, or temperatures above 400F (204C), may cause polymerization.
Incompatibility (Materials to Avoid): Water, amines, strong bases, alcohols. May cause some corrosion to copper alloys and aluminum.
Hazardous Decomposition (Byproducts): By heat and fire; carbon monoxide, oxides of nitrogen, traces of HCN, MDI vapors or aerosols.
Instability Conditions: Contamination with water and high temperatures (greater than 400F (204C).

SECTION VI - HEALTH HAZARD DATA

ROUTES OF ENTRY
Acute Inhalation: MDI vapors of mist at concentrations above the TLV can irritate (burning sensation)the mucous membranes in the respiratory tract (nose, throat, lungs) causing runny nose, sore throat, coughing, chest discomfort, shortness of breath, and reduced lung function (breathing obstruction). Persons with a preexisting, nonspecific bronchial hyperreactivity can respond to concentrations below the TLV with similar symptoms as well as asthma attack. Exposure well above the TLV may lead to bronchitis, bronchial spasm and pulmonary edema (fluid in lungs). These effects are usually reversible. Chemical or hypersensitive pseumonitis, with flu-like symptoms (e.g. fever, chills) has also been reported. These symptoms can be delayed up to several hours after exposure.
Chronic Inhalation: As a result of repeated overexposures or a single large dose, certain individuals develop isocyanate sensitization (chemical asthma) which will cause them to react to a later exposure to isocyanate at levels well below TLV. These symptoms which can include chest tightness, wheezing, cough, shortness of breath or asthma attack, could be immediate or delayed (up to several hours after exposure).
Skin: Causes irritation
Ingestion: Causes irritation to throat and stomach

HEALTH HAZARDS (ACUTE AND CHRONIC)
Skin Contact: May cause: irritation , swelling, rash, blistering or scaling..
Eye Contact: May cause irritation and lead to eye damage.
Inhalation: May cause shortness of breath, chemical sensitivity.
Ingestion: May cause irritation of the mouth and stomach.
Carcinogenicity: NTP? Not listed IARC Monographs? Not listed OSHA Regulated? Not regulated

SIGNS AND SYMPTOMS OF EXPOSURE
Can cause shortness of breath, runny nose and irritation of nose and throat. Vapors and liquid are irritating. Chronic overexposure may result in sensitization.

EMERGENCY AND FIRST AID PROCEDURES
Skin: Wash thoroughly with soap and water. Remove contaminated clothing. Call a physician if irritation develops
Eyes: Flush with water for 15 minutes. Call a physician.
Inhalation: Remove individual to fresh air. Call a physician.
Ingestion: Do not induce vomiting. Call a poison center or physician.

SECTION VII - PRECAUTIONS FOR SAFE HANDLING AND USE

Steps to be Taken in Case Material is Released or Spilled: evacuate and ventilate spill area. Dike spill to prevent entry onto water system; wear full protective equipment, including respiratory equipment during clean-up.
Major spill: call CHEMTREC (800)424-9300. If temporary control of vapor is required, a blanket of protein foam may be placed over the spill. Large quantities may be pumped into closed but not sealed containers for disposal.
Minor spill: Absorb with sawdust or other absorbent, shovel into suitable unsealed containers and transport to a well ventilated area (outside). Treat with a neutralizing agent: Mixture of water (80%), non-ionic surfactant a.k.a. Tergitol TMN-10 (20%) OR water (90%, concentrated ammonia (3-8%), and detergent (2%). Add 10 parts of neutralizer to part isocyanate, with mixing. Allow to stand for 48 hours to let CO2 escape.
Waste Disposal Method: Waste must be disposed of in accordance with federal, state, and local environmental control regulations. Incineration is the preferred method.
Empty containers should be decontaminated prior to disposal. Empty containers should be crushed to prevent reuse. DO NOT heat or cut empty container with electric or gas torch.
Precautions to be Taken in Handling and Storing: Store in tightly closed containers to prevent moisture contamination. Do not reseal if contamination is suspected. Avoid contact with skin and eyes. Do not breathe aerosols or vapors. Warning properties (irritation of the eyes, nose and throat or odor). Are not adequate to prevent overexposure from inhalation. This material can produce asthmatic sensitization upon either single inhalation exposures to lower concentration or upon repeated inhalation exposures to lower concentrations. Exposure of vapors of heated MDI can be extremely dangerous. Employee education and training in the safe use and handling of this compound are required under OSHA Hazard Communication Standard. Store in cool, dry area.
Other Precautions: Keep way from extreme heat, open flame or other ignition sources. Containers must not be washed out or used for other purposes. Do not weld or flame cut empty containers.

SECTION VIII - CONTROL MEASURES
HMIS Personal Protection Index: "J"
Respiratory Protection: Ventilate with air flow to keep concentration below TLV. NIOSH approved breathing apparatus if ventilation is inadequate.
Ventilation: Local exhaust to reduce exposure.
Protective Gloves: Neoprene or equivalent gloves.
Eye Protection: Chemical splash goggles or face shield to protect against accidental splashes.
Other Protective Clothing or Equipment: Chemically resistant apron. Safety showers and eye wash stations should be available.
Work/Hygienic Practices: Wash thoroughly with soap and water before eating, smoking and using washroom. Remove contaminated clothing and wash before re-use.

Although the information and recommendations set forth herein (hereinafter "information") are presented in good faith and believed to be correct as of the date hereof, R-Solutions makes no representations as to the completeness or accuracy thereof. Information is supplied upon the condition that the persons receiving same will make their own determination as to its suitability for their purposes prior to use. In no event will R-Solutions responsible for damages of any nature whatsoever resulting from the use of or reliance upon information. No representations or warranties, either express or implied, of merchantability, fitness for a particular purpose or of any other nature are made hereunder with respect to information or the product to which information refers.

R-Solutions
DATE: 9/27/04