Revised 5/19/98
Material SafetyData Sheet
LightGuard®
Protected Membrane Roof Insulation
The LightGuard® Protected Membrane Roof Insulation (PMRI) is a composite of Styrofoam® RM brand extruded
polystyrene foam thermal insulation with an attached coating of modified latex concrete. We will treat this MSDS as a
two part document: ( A ) covering the extruded polystyrene foam thermal insulation, and ( B ) the concrete topping.
( A ) Styrofoam RM Brand Extruded Polystyrene Thermal Insulation
MSD: 002462
1. INGREDIENTS: (% W/W, Unless Otherwise Noted)
Polystyrene CAS# 009003-53-6 73.5-100%
Chlorodifluoroethane CAS# 000075-68-3 0-10%
Ethyl Chloride CAS# 000075-00-3 0-4.5%
Polyethylene CAS# 009002-88-4, or CAS# 026221-73-8 0-10%
Hexabromocyclododecane CAS# 025637-99-4 0-2.0%
This document was prepared pursuant to the OSHA hazard communication standard (29 CFR 1910.1200).
In addition, other substances not hazardous per this OSHA standard may be listed. Where proprietary
ingredient shows, the identity may be made available as provided in this standard. This part of the
document has been taken from MSDS information supplied to us from DOW Chemical U.S.A..
2. PHYSICAL DATA
Boiling Point: Not Applicable
Vap. Press: Not Applicable
Vap. Density: Not Applicable
Sol. in water: None
Sp. Gravity: 0.027 to 0.064
Appearance: Rigid Cellular Foam Board
Odor: No Odor
3. FIRE AND EXPLOSION HAZARD DATA:
Flash Point: 670 ø F, 354ø C Flash Ignition Temperature
Method Used: ASTM D1929 Proc. B.
Flammable Limits: LFL: Not Applicable UFL: Not Applicable
Extinguishing Media: Water Spray.
Fire & Explosion Hazards: This polystyrene foam plastic product is combustible. This product contains a
flame retardant to inhibit accidental ignition from small fire sources. However, once ignited this product
will burn, emitting a dense black smoke. During shipping, storage, and use this product must be protected
from flame or other high heat sources. During certain fabrication operations such as cutting and grinding,
blowing agents or dust may be released. Accumulation of blowing agents or dust in air could present
flammability and explosion concerns. Provide adequate ventilation, and appropriate dust handling systems
where needed. This product should not be shipped, stored or used in virtually airtight spaces to prevent
the build-up of combustible vapors.
Styrofoam® indicates a trademark of the Dow Chemical Company ®LightGuard is a registered trademark of T. Clear Corp. TCC-H-LGMSDS-95-A
MATERIAL SAFETY DATA SHEET LIGHTGUARD PMRI Rev. 5/19/98
Fire Fighting Equipment: Wear positive-pressure, self-contained breathing apparatus. Apply large volume
of water directly on flame or burning surface.
4. REACTIVITY DATA:
Stability: Conditions To Avoid: Avoid fire and high temperatures. Temperatures over 300ø C (572ø F)
will release combustible gases.
Incompatibility: Specific Materials to Avoid: Aromatic Hydrocarbons, Higher (>C5) Aliphatic
Hydrocarbons, Esters, Amines, Higher Aldehydes.
Hazardous Decomposition Products: Does not normally decompose. In smoldering or flaming
conditions, carbon monoxide, carbon dioxide, carbon are generated. Evolution of small amounts of
hydrogen bromide, hydrogen chloride and hydrogen fluoride occur when burned or heated over 250ø C
(482ø F); under high heat, non-flaming conditions, small amounts of aromatic hydrocarbons such as
styrene and ethyl benzene are generated.
Studies have found that the products of combustion of this polystyrene foam insulation are no more
acutely toxic than the products of combustion of other common building materials such as wood.
Hazardous Polymerization: Will not occur.
5. ENVIRONMENTAL AND DISPOSAL INFORMATION:
Action to take for Spills/Leaks: Pick up, or if dust or in small pieces, sweep up and place in suitable
container for disposal.
Disposal Method: If conditions allow, this polystyrene foam plastic product may be reused or recycled
where recycling programs and facilities exist. If reuse or recycling are not options, then incinerate in an
approved waste-to-energy process with excess oxygen, or bury in an approved landfill. The disposal
method must be in accordance with all local, state, and federal regulations.
6. HEALTH HAZARD DATA:
Eye: Solid or dust may cause irritation or corneal injury due to mechanical action.
Skin Contact: Skin absorption is unlikely due to the physical properties.
Ingestion: Ingestion is unlikely due to the physical state. Physical injury only. May cause choking if
swallowed.
Inhalation: Dust may cause irritation to the upper respiratory tract. Excessive exposure to high
concentrations of ethyl chloride, and chlorodifluoroethane blowing agents may cause central nervous
system depression, anesthetic effects and irregular heartbeat (cardiac sensitization). In animals, excessive
exposure to chlorodifluoroethane has caused low blood pressure, respiratory stimulation and tightness in
the chest (bronchoconstriction). Concentrations of the above blowing agents anticipated incidental to
proper handling are expected to be well below those which cause the acute inhalation effects listed above,
as well as below OSHA PEL and DOW industrial hygiene guide. (See Section 8 for handling precautions)
Systemic (Other Target Organ) Effects: Repeated exposures to dusts of this material are not anticipated
to result in systemic toxicity or permanent lung injury; however, excessive exposures may cause less severe
respiratory effects. Hexabromocyclododecane (HBCD) may increase tissue levels of bromine.
Cancer Information: Neither polystyrene foam dust, nor chlorodifluoroethane caused cancer in long-term
animal studies. An increase in uterine tumors has been reported in female mice exposed for their lifetimes
to 15,000 ppm ethyl chloride. Such tumors did not occur in rats similarly exposed. These results are of
unknown relevance to humans.
Teratology (Birth Defects): No birth defects were seen in animal studies with Ethyl Chloride or
Chlorodifluoroethane.
Mutagenicity (Effects on Genetic Material): Results of tests for genetic effects with hexabromocyclododecane
have been negative. Ethyl chloride and chlorodifluoroethane have been shown to be negative in some in
vitro (test tube) mutagenicity tests and positive in others. Results of mutagenicity tests in animals on
chlorodifluoroethane have been negative.
®LightGuard is a registered trademark of T. Clear Corporation TCC-H-LGMSDS-95-A
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Styrofoam® indicates a trademark of the Dow Chemical Company
MATERIAL SAFETY DATA SHEET LIGHTGUARD PMRI Rev. 5/19/98
7. FIRST AID:
Eyes: No adverse effects anticipated by this route of exposure incidental to proper industrial handling.
Skin: Wash off in flowing water or shower.
Ingestion: No adverse effects anticipated by this route of exposure.
Inhalation: Remove to fresh air. If not breathing, give artificial respiration. If breathing is difficult, oxygen
should be administered by qualified personnel. Call a physician or transport to a medical facility.
Note to Physician: Exposure may increase ‘â?™myocardial irritability’â??. Do not administer sympathomimetic
drugs unless absolutely necessary. No specific antidote. Supportive care. Treatment based on judgment of
the physician in response to reactions of the patient.
8. HANDLING PRECAUTIONS:
Exposure Guideline(s): Ethyl Chloride: DOW Industrial Hygiene Guide (IHG) is 150 ppm; ACGIH TLV
and OSHA PEL are 1000 ppm. DOW IGH for chlorodifluoroethane is 1000 ppm.
Ventilation: Provide general and/or local exhaust ventilation to control airborne levels below the exposure
guidelines.
Respiratory Protection: Atmospheric levels should be maintained below the exposure guideline When
respiratory protection is required for certain operations, including but not limited to saw, router, or hot
wire cutting, use an approved air-purifying respirator. In dusty atmospheres, use an approved dust
respirator.
Skin Protection: No precaution other than clean body-covering clothing should be needed.
Eye Protection: Use Safety Glasses. If there is potential for exposure to particles which could cause
mechanical injury to the eye, wear chemical goggles.
9. ADDITIONAL INFORMATION:
Special Precautions to be taken in Handling and Storage: Limited industrial hygiene measurements of
ethyl chloride in ventilated warehouses and production facilities indicate that ethyl chloride present in the
air is below the current 150 ppm Industrial Hygiene Guide for ethyl chloride.
Gas fired recirculating air furnaces or heaters, gas water heaters, etc., drawing air from areas
where there may be a presence of ethyl chloride, and chlorodifluoroethane gases from storage or
fabrication of extruded polystyrene foam, can be subjected to rust and corrosion problems as a
result of thermal decomposition of the blowing agents to hydrogen chloride.
Notice: This polystyrene foam plastic product is combustible and should be protected from flame and
other heat sources. It should be installed with code-acceptable thermal barriers or used in approved
alternative constructions. For more information, call DOW (1-800-441-4DOW).
MSDS Status: REVISED SECTIONS 3, 5, 7, 8, AND REGULATORY INFORMATION.
REGULATORY INFORMATION: (Not meant to be all-inclusive � selected regulations represented).
Notice: The information herein is presented in good faith and believed to be accurate as of the effective
date of 10/14/92. However, No Warranty, expressed or implied, is given. Regulatory requirements are
subject to change and may differ from one location to another; it is the buyer’s responsibility to ensure that
its activities comply to federal, state or provincial, and local laws. The following specific information is
made for the purpose of complying with numerous federal, state or provincial, and local laws and
regulations. See MSDS sheet for health and safety information.
®LightGuard is a registered trademark of T. Clear Corporation TCC-H-LGMSDS-95-A
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Styrofoam® indicates a trademark of the Dow Chemical Company
MATERIAL SAFETY DATA SHEET LIGHTGUARD PMRI Rev. 5/19/98
US. REGULATIONS
SARA 313 Information: This product contains the following substances subject to the reporting
requirements of section 313 of Title III of the Superfund Amendments and Reauthorization Act of 1986
and 40 CFR part 372:
Chemical Name CAS Number Conc.
CHLOROETHANE (Ethyl Chloride) 000075-00-3 < 4.5%
SARA Hazard Category: This product has been reviewed according to the EPA “Hazard Categories�
promulgated under sections 311 and 312 of the Superfund Amendments and Reauthorization Act of 1986
(SARA Title III) and is considered, under applicable definitions, to meet the following categories.
EXEMPT ARTICLE
This product has been determined to be an article under the definition included in the OSHA Hazard
Communication Standard (29 CFR 1910.1200).
CALIFORNIA PROPOSITION 65
The following statement is made in order to comply with the California Safe Drinking Water and Toxic
Enforcement Act Of 1986. This product contains a chemical(s) known to the State of California to cause
cancer. (See section 6 of the MSDS for details on carthogenicity.)
NATIONAL FIRE PROTECTION ASSOCIATION (NAPA) RATINGS
Health 0
Flammability 1
Reactivity 0
CANADIAN REGULATIONS
The workplace hazardous materials information system (W.H.M.I.S.) classification for this product is: This
product isn’t a “controlled product� under W.H.M.I.S..
The Transportation of Dangerous Goods Act (T.D.G.A.) Classification for this Product is: Not Regulated.
®LightGuard is a registered trademark of T. Clear Corporation TCC-H-LGMSDS-95-A
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Styrofoam® indicates a trademark of the Dow Chemical Company
MATERIAL SAFETY DATA SHEET LIGHTGUARD PMRI Rev. 5/19/98
( B ) MODIFIED LATEX CONCRETE TOPPING
1. IDENTITY
Product Name: Concrete Topping for LightGuard PMRI
The concrete topping on the LightGuard PMRI is a latex modified heavy weight concrete which is formed
and extruded on the surface of the Styrofoam RM brand extruded polystyrene foam thermal insulation.
After the concrete is allowed to cure, there are no serious hazards when utilized except those as noted below.
2. HAZARDOUS INGREDIENTS
Cement: 10 - 25% By Weight
Heavy Weight Aggregate: 60 - 80% By Weight
Latex (Styrene/butadiene polymer): <10% By Weight
H2O <10% By Weight
3. PHYSICAL & CHEMICAL CHARACTERISTICS
Boiling Point: N/A
Specific Gravity: N/A
Vapor Pressure: N/A
% Volatile: N/A
Vapor Density: N/A
Evaporation Rate: N/A
Appearance & Odor: A hard gray covering with a slight cement odor
Flash Point: N/A
Flammable Limits in Air: N/A
Extinguisher Type: WATER
Unusual Fire & Explosion Hazard: NONE
4. PHYSICAL HAZARDS
Stability: Stable
Incompatibility: Strong Acids
Materials to Avoid: Strong Acids
Hazardous Decomposition Products: Gases from Strong Acid Degradation
5. TOXICOLOGICAL PROPERTIES
Medical Conditions Generally
Aggravated by Exposure Protection: Possible abrasion by handling without proper protection
Route of Entry: Inhalation or eye contact
Acute Exposure: Possible irritation of nose, throat and lungs from excessive exposure
to dust
Chronic Exposure: Chronic overexposure to dust containing Silica (Quartz Cristobalite
and Tridymite) can cause delayed lung injury (Silicosis). Inhalation of
Crystalline silica may contribute to pre-existing Pulmonary diseases
such as Asthma and Lung Disorders associated with the smoking of
tobacco. Some recent animal studies have caused the International
Agency (1) There is sufficient evidence for the Carcinogenicity to
experimental animals. (2) There is limited evidence for the
Carcinogenicity to humans.
®LightGuard is a registered trademark of T. Clear Corporation TCC-H-LGMSDS-95-A
Page 5
Styrofoam® indicates a trademark of the Dow Chemical Company
MATERIAL SAFETY DATA SHEET LIGHTGUARD PMRI Rev. 5/19/98
Quartz: LCLO-300 ug/m3/IDY-1 Inhalation Human
Toxicity Data:
Crystobalite: TCLO-16 mppcf/8H/17.9Y- 1 Inhalation Human
Tridymite: TCLO-16 mppcf/8H/17.9Y-1 Inhalation Human
Note: LD 50 and LC 50 are not available
In contradiction to IARC’s listing as a Class 2A Carcinogen. There is considerable disagreement by an
informed scientific body (i.e. “Literature Survey of the Evidence Concerning the Carcinogenicity of
Crystalline Silica� by Dr. Karen Hagelstein of Stefan, Robertson and Kristen, consulting Engineers, 1412
140th Place NE, Bellview, WA 98007).
6. SPECIAL PROTECTION INFORMATION
Respiratory Protection NIOSH: Dust may cause irritaiton to respiratory tract. Use NIOSH approved
dust masks
Ventilation: General of local to control airborne levels
Protective Gloves: In damp conditions, abrasion and skin irritation due to the alkali in
the cement
Eye Protection: Use safety glasses with shields while cutting
Other Protective Clothing
or Equipment: Possible use for aprons
First Aid Measures: Wash thoroughly with soap and water. If irritation remains, see
medical attention
7. DOCUMENTARY INFORMATION
The information presented here is based on the testing data available to us at the time of publication
and is believed to be correct. Since this information may have been obtained in part from independent
laboratories or other sources not under our direct supervision, no representation is made that the
information is accurate, reliable, complete or representative. We have made no effort to conceal nor to
censor deleterious aspects of this product. Since we cannot anticipate all conditions which may arise
during use of this product, we make no guarantee that the health and safety precautions for all
individuals and/or situations involving its handling and use.
Likewise, we make no guarantee or warranty of any kind that the use or disposal of this product is in
compliance with all federal, state, or local laws. It is the obligation of the user of the product herein to
determine and comply with the requirements on all applicable statutes.
®LightGuard is a registered trademark of T. Clear Corporation TCC-H-LGMSDS-95-A
Page 6
Styrofoam® indicates a trademark of the Dow Chemical Company
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