Date: June 23, 2005                                                                                               Page 1 of 6



Material Safety Data Sheet



Avanti International                                                       Chemtrec Emergency Phone: 800-424-9300

822 Bay Star Blvd.                                                         Product Data Information: 281-486-5600

Webster, TX 77598                                                          Fax: 281-486-7300



Product Identification



Product Name: AV-330 SAFEGUARD



Composition Information / Ingredients



    Ingredient Name / CAS Number                       Exposure Limits                              Concentration

          Urethane Prepolymer                       OSHA: Not established                              80-85 %

        CAS Number 59675-67-1                       ACGIH: Not established                            By weight

     Diethylene Glycol Ether Acetate                OSHA: Not established                             15 to 20%

         CAS Number 112-15-2                        ACGIH: Not established                            By weight

   4,4-Diphenylmethane Diisocyanate            OSHA: PEL Ceiling limit 0.20 mg/m3                   Less than 1%

         CAS Number 101-68-8                 ACGIH:0.05 mg/m3 (8-hour, 40 hours/week)                 By weight



Hazardous Material Identification



Primary Route(s) of Entry: Inhalation and ingestion.

Warning! May cause eye, skin, and respiratory tract irritation, if inhaled. May cause allergic respiratory reaction. May

 cause allergic skin reaction. Toxic fumes are given off during burning or thermal decomposition.

Inhalation: Although MDI is very in low volatility, an inhalation hazard can exist from MDI aerosols or vapors formed during

 heating, foaming or spraying. Individuals that are sensitized, exposure may result in allergic respiratory reactions.

Human effects and symptoms of overexposure:

 Acute inhalation: MDI vapors or mist at concentrations above the TLV although highly unlikely can irritate (burning

 sensation) the mucous membranes in the respiratory tract (nose, throat, and lungs) causing runny nose, sore throat,

 coughing, chest discomfort, shortness of breath and reduced lung function (breathing obstruction). Persons with a

 preexisting, nonspecific bronchial hyperactivity can respond to concentrations below the TLV with similar symptoms as

 well as asthma attack. These effects are usually reversible. Chemical or hypersensitive pneumonitis, with flu-like

 symptoms (e.g., fever, and chills) has also been reported. These symptoms can be delayed up to several hours after

 exposure.

Chronic Inhalation: As a result of previous repeated overexposures, or single large dose, certain individuals develop

 symptoms to isocyanates at levels way 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, similar

 to many non-specific asthmatic responses. There are reports that once sensitized an individual can experience these

 symptoms upon exposure to dust, cold air or other irritants. This increased lung sensitivity can persist for weeks and in

 severe cases for several years. Overexposure to isocyanates has also been reported to cause lung damage, including

 decrease in lung function), which may be permanent. Sensitization can either be temporary or permanent.

Acute skin contact: Isocyanates react with skin protein and moisture and can cause irritation, which may include the

 following symptoms: reddening, swelling, rash, scaling, or blistering. Cured material is difficult to remove.

Chronic skin contact: Prolonged contact can cause redding, swelling, rash, scaling, blistering, and in some cases skin

 sensitization. Individuals who have skin sensitization can develop these symptoms form contact with liquid vapors.

 Animal test have indicated that respiratory sensitization can result form skin contact with MDI. This data reinforces the

 need to prevent skin contact with MDI (see Toxicology information).

Acute eye contact: Liquid, aerosols or vapors are irritating and can cause tearing, reddening and swelling. If left untreated,

 corneal damage can occur and injury is slow heal. However, damage is usually reversible (see First Aid Measures for

 treatment).

Acute ingestion: Can result in irritation and corrosive action in the mouth, stomach tissue, and digestive tract. Symptoms

 can include sore throat, abdominal pain, nausea, vomiting and diarrhea.

Carcinogenicity (MDI): Neither MDI nor polymeric MDI are listed by the NPT, IARC or regulated by OSHA as carcinogens.

 NTP: Not listed.

 IARC: Not listed.

 OSHA: Not regulated.

AV-330 SAFEGUARD                                                                                                  Page 2 of 6



Medical conditions aggravated by exposure: asthma, other respiratory disorders (bronchitis, emphysema, bronchial

 hyperactivity), skin allergies and eczema.

Carcinogenicity (): Is listed as a carcinogen by IARC (2B) and NTP. Has been shown to cause cancer in lab animals

 when administered orally. Carcinogenicity through inhalation most likely route of industrial exposure has not been

 proven.

Medical conditions aggravated by exposure: Asthma, other respiratory disorders (bronchitis, emphysema, bronchial

hyperactivity), skin allergies, and eczema.



First Aid Measures



Primary route(s) of entry: Inhalation and ingestion.

Eyes: Flush with copious amounts of water, preferably lukewarm water for at least 15 minutes, holding eyelids open all the

 time. Refer individual to physician or ophthalmologist for immediate follow-up.

Skin: Remove contaminated clothing. Wash affected skin thoroughly with soap and water. Wash contaminated clothing

 before reusing. For severe exposure, get under safety shower after removing clothing, and then get medical attention.

 For lesser exposures, seek medical attention if irritation develops or persist after the area is washed.

Inhalation: Move to an area free form risk of further exposure. Administer oxygen or artificial respiration if needed. Obtain

 medical attention. Asthmatic-type symptoms may develop and may be immediate or delayed up to several hours.

 Consult a physician if this should occur.

Ingestion: Do not induce vomiting. Give 1-2 cups of milk or water to drink. Do not give anything by mouth to an

 unconscious person. Consult a physician.

Note to Physician:

 Eyes: Stain for evidence of corneal injury. If cornea is burned, install antibiotic steroid preparation frequently. Work place

 vapors have produced reversible corneal epithelial edema impairing vision.

 Skin: This compound is known as a skin sensitizer. Treat symptomatically as for contact dermatitis or thermal burns. If

 burned, treat as thermal burn.

 Ingestion: Treat symptomatically. 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

 skin or pulmonary sensitization reaction to this material should be removed from exposure to any isocyanate.



Fire and Explosion Hazard Data



Flash point: 242?F COC method

Extinguishing media: Dry chemical, carbon dioxide, foam and water spray for large fires.

Special fire fighting procedures: Full emergency equipment 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 (see Stability and reactivity). At temperatures greater than 400?F (204?C)

 polymeric MDI can polymerize and decompose, which can cause pressure build up in closed containers. Explosive

 rupture is possible. Therefore, use water to cool fire-exposed containers.



Accidental Release Measures



Spill and leak procedures: Evacuate and ventilate spill area. Dike spill to prevent entry into water system. Wear full

 protective equipment, including equipment during clean up (see Personal protection).

Large spill: Call Avanti International at (800) 877-2570. If transportation spill, call Chemtrec at (800) 424-9300. If

 temporary control of isocyanate vapor is required, a blanket of protective foam (available at most fire fighting

 departments) may be placed over the spill. Large quantities may be pumped into closed, but not sealed container for

 disposal.

Minor spill: Absorb isocyanates with sawdust or other absorbents. Shovel into suitable unsealed containers: transport to

 well-ventilated area (outside) and treat with neutralizing solution: mixture of water (90%), concentrated ammonia (3-8%)

 and detergent (2%). Allow to stand uncovered for 48 hours to let CO2 escape.

Clean up: Decontaminate floor with decontaminating solution, letting stand for at least 15 minutes.

AV-330 SAFEGUARD                                                                                                 Page 3 of 6



Special Precautions and Storage Data



Storage temperature (min/max): 64?F (18?C) 86?F (30?C)

Shelf life: 1 year

Special sensitivity: If container is exposed to high heat, 400?F (204?C) it can be pressurized and possibly rupture. MDI

 reacts slowly with water to form CO2 gas. This gas can cause sealed containers to expand and possibly rupture.

Handling/Storage precautions: 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 eyes, nose, and throat or odor) are not adequate to prevent chronic overexposure form inhalation. This

 material can produce asthmatic sensitization upon either single inhalation exposure to a relatively high concentration or

 upon repeated inhalation exposure to lower concentrations. Exposure to vapors of heated MDI can be extremely

 dangerous. Employee education and training in the safe use and handling of this compound are required under the

 OSHA Hazard Communication Standard.



Exposure Controls and Personal Protection



Eyes protection: Liquid chemical goggles. Vapor resistant goggles should be worn when contact lenses are in use. In a

 splash hazard environment chemical goggles should be in combination with a full-faced shield.

Skin protection: Permeation resistant gloves (butyl rubber, nitrile rubber, and polyvinyl alcohol). However, please note that

 PVA degrades in water. Cover as much of the exposed skin area as possible with appropriate clothing. If skin creams are

 used, keep area covered by cream to a minimum.

Ventilation requirements: Local exhaust should be used to maintain levels below the TLV regarding industrial ventilation

 (i.e., ACGIH Industrial Ventilation) should be consulted for guidance about adequate ventilation.

Respirator requirements: Concentrations greater than the TLV can occur when MDI is sprayed heated or used in a poorly

 ventilated area. In such cases, or whenever concentrations of MDI exceed the TLV are not known, respiratory protection

 must be worn. A supplied air respirator (either positive pressure or continuous flow type) is required. In an emergency

 situation, a self-contained breathing apparatus may be used. MDI has poor warning properties, since the concentration at

 which MDI can be smelled is substantially higher than the maximum exposure limit. Observe OSHA regulations for

 respirator use (29 CFR 1910.134).

Monitoring: Isocyanate exposure levels in enclosed environments must be monitored. Monitoring of airborne isocyanates

 in the breathing zone of individuals should become part of the overall employee exposure characterization program.

 NIOSH and OSHA have developed monitoring techniques. Upon request, Avanti International can make available

 methods, which are modifications of these NIOSH, and OSHA methods.

Medical surveillance: Medical supervision of all employees who handle or come in contact with isocyanates is

 recommended. These should include pre-employment and periodic medical examinations with pulmonary function tests

 (FEC, FVC as a minimum). Persons with asthmatic-type conditions, chronic bronchitis, and other chronic respiratory

 diseases or recurrent skin eczema or sensitization should be excluded from working with isocyanates. Once a person is

 diagnosed as sensitized to an isocyanate, no further exposure should be permitted.

Additional protective measures: Safety showers and eyewash stations should be available. Educate and train employees

 in safe use of product. Follow all label instructions. For additional information, contact Avanti International.



Physical Properties



Physical form: Liquid

Color: Transparent yellow

Odor: Slightly musty odor

Odor threshold: 0.39 ppm (MDI)

pH: Not established

Boiling point: 450?F (245?C) @ 750 mm Hg for MDI

Melting/Freezing point: Not established

Viscosity: 850 cps @ 77?F (25?C)

Solubility in water: Complete

Specific gravity: 1.09 @ 77?F (25?C)

% Volatile by volume: 0%

Vapor pressure: Less than .010 mm Hg @ 68?F

Vapor density: 3.66 (air = 1)

Weight per gallon: 9.05 lb./gal

AV-330 SAFEGUARD                                                                                                  Page 4 of 6



Stability and Reactivity



Stability: This is a stable material.

Hazard polymerization: May occur, contact with moisture and other materials, which react with isocyanates, or

 temperatures about 400?F (204?C), may cause some polymerization.

Incompatibilities: Water, amines, strong bases, and alcohols will cause some corrosion to copper alloys and aluminum.

Instability conditions: Contamination with water and high heat above 400?F (204?C).

Decomposition products: By high heat and fire: carbon monoxide, oxides of nitrogen, traces of HCN, MDI vapors or

 aerosols.



Toxicological Information



Toxicity data for: Diphenylmethane Diisocyanate (monomeric and polymeric).

 Acute Toxicity:

 Oral LD50: Greater than 5000 (rat)

 Dermal LD50: Greater than 5,000 (rabbit)

 Inhalation LC50: The 4-hour LC50 for polymeric MDI in rat's ranges from 370 to 490 mg/m3. The LC50 for monomeric

 MDI was estimated to be between 172 and 187 mg/m3.

 Eye effects: Slight to moderate irritation

 Skin effects: Slight to moderate irritation

  Sensitization: MDI has been shown to produce dermal sensitization in laboratory animals. Evidence of respiratory

    sensitization has also been observed in guinea pigs. In addition, there is some evidence suggestive of cross-

    sensitization between different types of diisocyanates.

Chronic toxicity: In a combined chronic inhalation toxicity/oncogenicity study, rats were exposed to an aerosol of polymeric

 MDI for 6 hours per day, 5 days per week for one or two years. The exposure concentrations were 0, 1.2, 1.0 and 6.0

 mg/m3. Microscopic examination of tissues revealed the effects of irritation to the nasal cavity and lungs in animals

 exposed to 1.0 and 6.0 mg/m3. The No Observable Effect Level (NOEL) was 0.2 mg/m3.

Carcinogenicity: In the study described above (chronic toxicity), the occurrence of pulmonary adenomas and single

 pulmonary adenomas and a single pulmonary adenocarcinoma was considered to be related to MDI. These tumors were

 observed only in rats exposed to high concentration of 6.0 mg/m3.

Mutagenicity: Positive (salmonella microsome test with metabolic activation; cell transformation assay) as well as negative

 (mouse lymphoma specific locus mutation test with or without metabolic activation) results have been observed "in vitro".

 However, MDI was negative in an "in vitro" (mouse micronucleus) assay.

Developmental toxicity: Rats were exposed to polymeric MDI at air concentrations of 0, 1, 4 and 12 mg/3 during days 6-15

 of gestation. Maternal toxicity (including mortality) was observed at the highest concentration of 12 mg/m3 accompanied

 by embryo and fetal toxicity. However, no eratogenic effects were observed even at this lethal concentration.



Ecological Information



Ecology data: Diphenylmethane Diisocyanate (monomeric and polymeric)

Aquatic toxicity: LC50-24 hours (static) greater then 500 mg/liter for daphnia magna, Limnea stagnalis, and zebra fish

(Brachydanio rerio) for both polymeric and monomeric MDI.



Disposal Considerations



Waste disposal method: Waste must be disposed of in accordance to local, state and federal environmental control

 regulations. Incineration is the preferred method.

 Empty container precautions: Empty containers must be handled with care due to product residue. Decontaminate

 containers prior to disposal. Empty decontaminated containers should be crushed to prevent reuse. Do not heat or cut

 empty container with electric or gas torch (see Explosion and hazard data, and Stability & reactivity). Gases may be

 highly toxic.

Transportation emergencies: Avanti International requires that Chemtrec be immediately notified at (800) 424-9300 when

this product is unintentionally released form its container during its course of distribution, regardless of the amount

released. Distribution includes transportation, storage incidental to transportation, loading and unloading. Such notification

must be immediate and made by the person having knowledge of the release.

AV-330 SAFEGUARD                                                                                                   Page 5 of 6



Shipping Information



This material is not regulated as a hazardous material

DOT shipping name: Liquid Resin non-regulated

DOT hazard classification: none

UN/NA number: none

Packaging group: none

DOT labels required: none

DOT placards required: none

Freight class: 65



Regulatory Information



OSHA status: this product is hazardous under the criteria of the Federal OSHA Hazard Communication Standard 29 CFR

1910.1200.

TSCA status: on TSCA inventory.

  Cercla reportable quantity: 5000 lbs. for 4'4'-Diphenylmethane Diisocyanate, CAS# 101-68-8.

Sara Title III:

  Section 302 extremely hazardous substances: none

  Section 311/312 hazard categories: immediate health hazard; delayed health hazard; reactive hazard

  Section 313 toxic chemicals: Polymeric Diphenylmethane Diisocyanate, CAS# 9016-87-9, 100%; contained in this

polymeric MDI product is 4'4'-Diphenylmethane Diisocyanate, CAS# 101-68-8,

RCRA status: MDI is not listed as a hazardous waste. This is because product uses, transformations, mixtures,

processes, etc., may render the resulting material hazardous, under the criteria of ignitability, corrosivity, reactivity and

toxicity characteristics under the new Toxicity Characteristics Leaching Procedure (TCLP) code of Federal Regulations

261.20-24.

The following chemicals are specifically listed by individual states; other product specific health and safety data in other

sections of the MSDS may also be applicable for state requirements. For details on your regulatory requirements you

should contact the appropriate agency in your state.



   Component Name / CAS Number                            Concentration                               State code

     Polymeric Diphenylmethane

                                                                                                         PA3,

                                                           Less than 1%

         Diisocyanate (MDI)

                                                                                                         NJ4

       CAS number 9016-87-9



FL      Florida Substance List

IL      Illinois Toxic Substance List

MA      Massachusetts Hazardous Substance List

NJ1     New Jersey Hazardous Substance List

NJ4     New Jersey Other-included in 5 predominant ingredients >1%

PA1     Pennsylvania Hazardous Substance List

PA3     Pennsylvania non-Hazardous present at 3% or greater

RI      Rhode Island List of Designated Substances

CN2     Canada WHMIS ingredient disclosure List over 0.1%



California Proposition 65:

This product does not contain any chemicals that are listed under California Proposition 65.

AV-330 SAFEGUARD                                                                                              Page 6 of 6



Other Information



NFPA 704M ratings:          Health           Flammability           Reactivity          Other

                              2                  1                     1

0-Insignificate

1-Slight

2-Moderate

3-High

4-Extreme



HMIS ratings:               Health           Flammability           Reactivity          Other

                              2                  1                     1

0-Minimal

1-Slight

2-Moderate

3-Serious

4-Severe



?  Chronic health hazard



The data in this material safety data sheet relates only to the material designated herein and does not relate to use in

combination with any other material or in any process. The information herein is furnished free of charge and is based on

technical data that Avanti International believes to be reliable and to the best of our knowledge, accurately reflects the

properties and effects of the hazardous components. This product is intended for use by persons having technical skills

and at their own discretion and risk. Because conditions of use of this material are outside our control we make no

warranties, expressed or implied, and assume no liability in connection with any use of this material.





Prepared by: C. Boddie