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Polysiloxanes,di-Me, 3-hydroxypropyl Me, ethers with polyethylene-polypropylene glycolmono-Me ether

Material Safety Data Sheet MSDS # GM7331
Revision Date: 6-5-06
Section I ?? Product and Company Identification
Trade Name: Mountain Grout
Product Name: MG295
Company: 24 Hr. Emergency Telephone Number:
Green Mountain International, LLC Chemtrec: 800-424-9300
235 Pigeon Street
Waynesville, NC 28786
800-942-5151 US/Canada * 828-456-9970 International

Section II ?? Composition/Information on Ingredients
Wt. % CAS#
Diphenylmethane Diisocyanate Mixed Isomers <= 10 26447-40-5
Methylene Bisphenyl Isocyanate (MDI) <= 10 101-68-8
MDI Prepolymer 15 ?? 35 Not disclosed
Polymeric Diphenylmethane Diisocyanate 10 ?? 30 9016-87-9
2,2-dimethyl-1-(methylethyl)-1,3-propanediyl bis(2-methylpropanoate) 10 ?? 30 6846-50-0
Polyalkyleneoxidemethylsiloxane Copolymer <2 67762-85-0

Section III ?? Hazards Identification
Emergency Overview
Physical Appearance: Clear to yellow liquid. Immediate Concerns: Irritating to eyes, respiratory
system, and skin. Inhalation at levels above the occupational exposure limit could cause respiratory
sensitization and risk of serious damage to respiratory system. The onset of the respiratory symptoms
may be delayed for several hours after exposure. A hyper-reactive response to even minimal
concentrations of diisocyanates may develop in sensitized persons.
Potential Health Effects
Eyes: Liquids, vapors, or mists are irritating to the eyes and can cause stinging, burning, lachrymation or
tearing. Skin: Moderate irritant. Repeated and/or prolonged contact may cause skin sensitization.
Ingestion: Ingestion may cause irritation of the gastrointestinal tract and gastrointestinal discomfort with
any or all of the following symptoms: nausea, vomiting, lethargy, or diarrhea.
Inhalation: Inhalation of vapors or mist at concentrations above the TLV can cause respiratory tract
irritation. (Nose, throat, lungs.) Chronic inhalation can result in sensitization.
Signs and Symptoms of Overexposure
Eyes: Contact may cause moderate irritation consisting of transient redness, swelling, and mucous
membrane discharge to the conjunctiva. Prolonged contact with the eyes may cause reversible corneal
opacity to occur, with no visual impairment expected.
Skin: Contact may cause minor irritation consisting of transient redness and/or swelling. Individuals with
skin sensitization can develop these symptoms from contact with a small amount of liquid or vapors.
Ingestion: Ingestion may cause irritation of the gastrointestinal tract and gastrointestinal discomfort with
any or all of the following symptoms: nausea, vomiting, lethargy or diarrhea.
Inhalation: Vapors or mist, especially as generated from heating the material or as from exposure in
poorly ventilated areas or confined spaces, are irritating and cause nasal discharge, coughing, discomfort
in nose and throat, and breathing obstruction. Individuals with respiratory sensitization may experience
allergic respiratory reactions when exposed to amounts below the exposure guidelines.
Medical Conditions Aggravated: Asthma, other respiratory disorders (bronchitis, emphysema, bronchia
hyperreactivity), skin allergies, eczema.
Routes of Entry: Inhalation, skin contact, eye contact, ingestion.
Sensitization: Any individual with isocyanate sensitization should not be exposed to this product. These
individuals can react to exposure well below the TLV. Symptoms can occur immediately or several hours
after exposure.
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Section IV ?CFirst Aid Measures
Eyes: Immediately flush eyes with plenty of water for at least 15 minutes, lifting upper and lower eyelids
occasionally. Get immediate medical attention.
Skin: Remove contaminated clothing. Wash affected areas thoroughly with soap and water. Wash
clothing thoroughly before reuse. For severe exposure, seek medial attention immediately. For lesser
exposure, seek medical attention if swelling or redness occurs, or if irritation persists after being washed.
Ingestion: Do not induce vomiting. Never give anything by mouth to a drowsy or unconscious person. If
the individual is conscious, rinse mouth with water. Give1 to 2 cups of water to drink. Seek immediate
medical attention.
Inhalation: Remove patient from exposure, keep warm and at rest. Obtain immediate medical attention.
Treatment is symptomatic for primary irritation or bronchiospasm. If breathing is labored, oxygen should
be administered by qualified personnel. Apply artificial respiration if breathing has ceased or shows signs
of failing. Asthmatic-type symptoms may develop and may be immediate or delayed up to several hours.
Antidotes: No specific antidote.
NOTES TO PHYSICIAN: Symptomatic and supportive therapy as needed. Following severe exposure,
medical follow-up should be monitored for at least 48 hours. May cause respiratory sensitization or
asthma-like symptoms. Respiratory symptoms, including pulmonary edema, may be delayed.

Section V ?? Fire Fighting Measures
Flash Point and Method: >(200??F) Closed Cup
Extinguishing Media: Dry Chemical, Carbon Dioxide, Chemical Foam, Water Fog or spray.
Hazardous Combustion Products: Carbon Monoxide, Carbon Dioxide, Nitrous Oxide, and HCN.
Explosion Hazards: Closed containers could rupture explosively at elevated temperatures generated
under fire conditions. During a fire, gases of a highly toxic nature may be generated by thermal
decomposition or combustion. Use water to cool fire-exposed containers.
Fire Fighting Procedures: Isolate fuel supply from fire. Use water spray to cool fire-exposed surfaces
and containers. Fire fighters should wear self-contained breathing apparatus in addition to emergency fire
fighting protective clothing.
Comments: Reacts slowly with water to produce carbon dioxide which may rupture closed containers.
This reaction accelerates at higher temperatures.

Section VI?? Accidental Release Measures
Small Spill: Clean up spills wearing proper personal protective equipment. (See Section VIII) Absorb with
dry chemical absorbent, earth, sand, or any other inert material. Place in a chemical waste container.
Move to outside well-ventilated area. Treat with 10 parts decontamination solution to 1 part isocyanate.
Mix well. Allow to stand uncovered 48 hours before disposal.
Large Spill: Eliminate all ignition sources. Evacuate and ventilate the area. Create a dike or trench to
contain materials. Prevent entry into waterways, sewers, basements or confined areas. Clean-up
personnel should wear appropriate personal protection equipment (see Section VIII). Absorb with dry
chemical absorbent, earth, sand, or any other inert material. Do not use combustible material such as
sawdust. Place in a chemical waste container. Move to outside well-ventilated area. Treat with 10 parts
decontamination solution to 1 part isocyanate. Mix well. Allow to stand uncovered 48 hours before
disposal. Clean spill area with decontamination solution and allow to stand for 15 minutes before removal.
Test atmosphere for MDI.
Decontamination solution: concentrated ammonia (5%), detergent (2%), and water (93%).
Release Notes: Spills and releases may have to be reported to Federal and/or local authorities. See
section XV regarding reporting requirements.
Special Protective Equipment: See Section VIII. Clean-up crews should always wear Personal
Protective Equipment.
Comments: After allowing material to harden, dispose of by any standard method of disposal in
accordance with good industrial practice and in compliance with federal, state, and local environmental
protection regulations.
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Section VII ?? Handling and Storage
Precautions: Keep containers tightly sealed. Keep containers away from heat source and/or open
flames. Do not store containers in open sunlight. Store in cool, well-ventilated area.
Handling: Wear proper personal protective equipment. Use in a well ventilated area. Avoid smoking, bare
lights, or ignition sources. Keep containers securely sealed when not in use. Avoid physical damage to
containers.
Storage: Containers can rupture if exposed to high heat. Protect from atmospheric moisture. Keep
containers sealed in order to avoid contamination. Do not reseal if contaminated. After container has been
opened, blanket with nitrogen before resealing. Store indoors in a cool, well-ventilated area.
Storage Temperature: (55??F) minimum to (120??F) maximum Shelf Life: 1 year
Special Sensitivity: Material is hygroscopic and reacts with water. It will form cured particles or a film
when exposed to atmospheric moisture. Blanket containers with nitrogen before resealing.
Comments: Reacts slowly with water to produce carbon dioxide which may rupture closed containers.
This reaction accelerates at higher temperatures. See Section X for more information on precautions
concerning storage and handling of this material.

Section VIII ?? Exposure Controls/Personal Protection
Exposure Guidelines: OSHA Hazardous Components (29 CFR 1910.1200)
Exposure Limits
OSHA PEL ACGIH TLV
mg/m3 mg/m3
ppm ppm
Diphenylmethane Diisocyanate Mixed Isomers NE NE NE NE
TWA
Methylene Bisphenyl Isocyanate (MDI) 0.20* 0.05
TWA
MDI Prepolymer NE NE NE NE
TWA
Polymeric Diphenylmethane Diisocyanate 0.20* 0.05
TWA
2,2-dimethyl-1-(methylethyl)-1,3-propanediyl bis(2-methylpropanoate) NE NE NE NE
TWA
Polyalkyleneoxidemethylsiloxane Copolymer NE NE NE NE
TWA
OSHA Table Comments: NE = Not Established *= Ceiling
Engineering Controls: Use process enclosures, local exhaust ventilation, or other engineering controls
to control airborne levels below recommended exposure limits.
Personal Protective Equipment
Eyes and Face: Wear safety glasses with side shields (or goggles) and a face shield.
Skin: The following protective materials are recommended: Gloves ?? neoprene, nitrile rubber, butyl
rubber. Thin latex disposable gloves should be avoided for repeated or long-term use. Protective clothing
should be selected and used in accordance with ??Guidelines for the Selection of Chemical Protective
Clothing?? published by ACGIH.
Respiratory: During application, if exposure of product can exceed the PEL/TLV, use appropriate
respiratory protection to protect from overexposure. Appropriate respiratory protection includes approved
supplied-air respirators (SAR) operated in a positive pressure mode or, in non-IDLH (immediately
dangerous to life and health) atmospheres, NIOSH approved air purifying respirators (APR), provided an
appropriate cartridge change-out schedule is implemented. [29 CFR 1910.134 (d)(3)(iii)] All respirators
used should follow the OHSA Respiratory Standard 29 CFR 1910.134.
Protective Clothing: Where contact is likely, wear chemical resistant gloves, a chemical suit, rubber
boots, and chemical safety goggles plus a face shield.
Work Hygienic Practices: Follow good normal hygiene practices. Avoid contact with skin. Avoid eating,
drinking, or smoking while using this product. Wash hands thoroughly after use.
Other Use Precautions: Medical supervision of all employees who handle or come in contact with
respiratory sensitizers is recommended. Persons with respiratory problems including asthmatic-type
conditions, chronic bronchitis, or other chronic respiratory diseases or recurrent skin eczema or skin
allergies should be evaluated for their suitability of working with this product. Once a person is diagnosed
as sensitized, no further exposure of the material that caused the sensitization should be permitted. The
Occupational Exposure limits do not apply to previously sensitized individuals.
Other Protective Equipment: Safety showers and eye wash stations.

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Section IX ?? Physical and Chemical Properties
Physical State: Liquid Odor: Slightly musty
Color: Clear to light yellow Boiling Point: Not Determined
Freezing Point: Not Determined Solubility in Water: Insoluble
Specific Gravity: 1.060 to 1.080 (water=1) at (77??F) Viscosity: 500 to 700 cps at (77??F)
Section X ?? Stability and Reactivity
Conditions to Avoid: Temperature extremes. Container contamination. Moisture.
Stability: Stable under recommended storage conditions
Polymerization: Polymerization may occur at elevated temperatures in the presence of alkalies, tertiary
amines, and metal compounds.
Hazardous Decomposition Products: Carbon Monoxide, Carbon Dioxide, Nitrous Oxide, and HCN.
Incompatible materials: This product will react with any materials containing active hydrogens such as
water, alcohol, amines, bases and acids. The reaction with water is very slow under 122??F, but is
accelerated at higher temperatures.
Section XI ?? Toxicological Information
Ingredients Oral LD50 (rat) Dermal LD50 (rabbit) Inhalation LC50 (rat)
369 mg/m3/4h
Methylene Bisphenyl Isocyanate (MDI) > 5000 mg/kg > 10000 mg/kg
(respirable aerosol)
490 mg/m3/4h
Polymeric Diphenylmethane > 5000 mg/kg > 5000 mg/kg
Diisocyanate (respirable aerosol)
2,2-dimethyl-1-(methylethyl)-1,3- > 3200 mg/kg >18840 mg/kg (rat) > 5.3 mg/L
propanediyl bis(2-methylpropanoate)
> 2000 mg/kg > 2000 mg/kg No data
Polyalkyleneoxidemethylsiloxane Copolymer
Eye Effects: The vapor, aerosol, and liquid are irritant.
Skin Effects: Moderate Irritant. Repeated and/or prolonged contact may cause skin sensitization. There
is limited evidence from animal studies that skin contact may play a role in respiratory sensitization. These
results emphasize the need for protective clothing including gloves to be worn at all times when handling
these chemicals or in maintenance work.
Sensitization: This material is a respiratory sensitizer and irritant. Repeated and/or prolonged contact
may cause skin sensitization and irritation.
Carcinogenicity: Not classified as a carcinogen by IARC, NTP, OSHA or ACGIH.
Mutagenicity: There is no substantial evidence of mutagenic potential.
Reproductive Effects: No adverse reproductive effects are anticipated.
General Comments: A study was conducted where groups of rats were exposed for 6 hours/day, 5 days/week for
a lifetime to atmospheres of respirable polymeric MDI aerosol at concentrations of 0, 0.2, 1, or 6 mg/m3. No adverse
effects were observed at 0.2 mg/m3. At the 1 mg/m3 concentration, minimal nasal and lung irritant effects were seen.
Only at the top concentration (6.0 mg/m3) was there an increased incidence of a benign tumor of the lungs
(adenoma). One malignant pulmonary tumor (adenocarcinoma) was seen in the 6.0 mg/m3 group. MDI
administration to rats in this study did not change the distribution and incidence of tumors from those seen in control
animals. The increased incidence of lung tumors is associated with prolonged respiratory irritation and the
concurrent accumulation of yellow material in the lung. In the absence of prolonged exposure to high concentrations
leading to chronic irritation and lung damage, it is highly unlikely that tumor formation will occur.
There are reports that chronic exposure to diisocyanates by inhalation may result in permanent decreases in
lung function.
Section XII ?? Ecological Information
Ecotoxicological Information: Polymeric MDI: LC50 (Zebra Fish) >1000 mg/L. EC50 (Daphnia magna)
(24 hour) >1000 mg/L. EC50 (E. Coli) >100 mg/L.
Chemical Fate Information: Immiscible with water, but will react with water to produce inert and non-
biodegradable solids.
General Comments: No testing for product as a whole.
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Section XIII ?? Disposal Considerations
Disposal Method: Disposal should be in accordance with local, state, provincial or national regulations.
Empty Container: Empty containers should be decontaminated and either passed to an approved drum
recycler or destroyed.
RCRA Hazard Class: This material is not a hazardous waste under RCRA 40 CFR 261. The treated
waste is not a hazardous material under RCRA 40 CFR 261.
General Comments: The generation of waste should be avoided or minimized whenever possible.
Chemical waste, even small quantities, should never be poured down drains, sewers or waterways.
Comments: Refer to Section VI for additional information.

Section XIV ?? Transport Information
DOT (Department of Transportation)
Proper Shipping Name: Not restricted when shipped below RQ.
Technical Name: Compound Resin
Other Shipping Information: Single containers with 5,000 lbs or more of 4,4??-Methylene Diphenyl
Diisocyanate are regulated as: Other Regulated Substances, Liquid, N.O.S. (Methylene Diphenyl
Diisocyanate), 9, NA3082, PGIII, RQ.
AIR (ICAO/IATA) - Proper Shipping Name: Not restricted
Vessel (IMO/IMDG) - Proper Shipping Name: Not restricted

Section XV ?? Regulatory Information
United States
SARA Title III (Superfund Amendments and Reauthorization Act):
311/312 Hazard Categories: Toxic, irritating substance, sensitizing substance
313 Reportable Ingredients: Diisocyanate compounds
CERCLA (Comprehensive Response, Compensation, and Liability Act)
CERCLA RQ: 4,4-Methylene Diphenyl Diisocyanate (CAS 101-68-8) has a 5,000 lb RQ (reportable
quantity). Any spill or release above the RQ must be reported to the National Response Center
(800-424-8802).
TSCA (Toxic Substance Control Act): TSCA Regulatory: All ingredients are on TSCA inventory.
RCRA Status: Not hazardous if discarded in its purchased form. However, under RCRA, it is the
responsibility of the product user to determine at the time of disposal whether a material containing the
product or derived from the product should be classified as a hazardous waste (40 CFR 261.20-24).
OSHA Hazard Comm. Rule: This material is classified as a hazardous material under the criteria outlined
in the OSHA Hazard Communication Standard (29 CFR 1910.1200).

Section XVI ?? Other Information
Prepared by: L. P.
HMIS Rating: Health ?? *2 Flammability ?? 1 Physical Hazard: 1
HMIS Rating Notes: If present, the asterisk signifies a chronic health hazard.
Rating System: 0 = low hazard to 4 = high hazard
Disclaimer: The information in this MSDS was obtained from sources that we believe are reliable. The
information is provided without warranty, implied or expressed, concerning accuracy. Green Mountain
International, LLC assumes no legal responsibility for use or reliance on this information. This MSDS is
provided solely for the purpose of conveying health, safety, and environmental information. This MSDS is
not a specification data sheet. Some of the information and conclusions may be derived from sources
other than test data on the material itself.
Key Legend Information:
ACGIH: American Conference of Governmental Industrial Hygienists EPA: Environmental Protection Agency
IARC: International Agency for Research on Cancer NTP: National Toxicology Program
OEL: Occupational Exposure Limit OSHA: Occupational Safety and Health Administration
PEL: Permissible Exposure Limit STEL: Short Term Exposure Limit
TLV: Threshold Limit Value TWA: Time Weighted Average

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