
WHITE LIGHTNING® STOP GAP!™ Triple Expanding Insulating Foam
Other means of
identification
Emergency telephone
number of the company
Section 1. Identification
White Lightning Products
101 W. Prospect Avenue
Cleveland, OH 44115
Relevant identified uses of the substance or mixture and uses advised against
Product Information
Telephone Number
Regulatory Information
Telephone Number
Transportation Emergency
Telephone Number
White Lightning Products
180 Brunel Road
Mississauga, Ontario L4Z 1T5 Canada
Section 2. Hazards identification
FLAMMABLE AEROSOLS - Category 1
GASES UNDER PRESSURE - Compressed gas
ACUTE TOXICITY (inhalation) - Category 4
SKIN CORROSION/IRRITATION - Category 2
SERIOUS EYE DAMAGE/ EYE IRRITATION - Category 2A
RESPIRATORY SENSITIZATION - Category 1
SKIN SENSITIZATION - Category 1
CARCINOGENICITY - Category 2
SPECIFIC TARGET ORGAN TOXICITY (SINGLE EXPOSURE) (Respiratory tract
irritation) - Category 3
SPECIFIC TARGET ORGAN TOXICITY (SINGLE EXPOSURE) (Narcotic effects) Category 3
SPECIFIC TARGET ORGAN TOXICITY (REPEATED EXPOSURE) - Category 2
Classification of the
substance or mixture
Percentage of the mixture consisting of ingredient(s) of unknown toxicity: 10%
Date of issue/Date of revision

Section 2. Hazards identification
Obtain special instructions before use. Do not handle until all safety precautions have
been read and understood. Wear protective gloves. Wear eye or face protection.
Wear protective clothing. Wear respiratory protection. Keep away from heat, hot
surfaces, sparks, open flames and other ignition sources. No smoking. Do not spray on
an open flame or other ignition source. Use only outdoors or in a well-ventilated area.
Do not breathe vapor. Wash hands thoroughly after handling. Contaminated work
clothing must not be allowed out of the workplace. Pressurized container: Do not pierce
or burn, even after use.
Get medical attention if you feel unwell. IF exposed or concerned: Get medical
attention. IF INHALED: If breathing is difficult, remove person to fresh air and keep
comfortable for breathing. Call a POISON CENTER or physician if you feel unwell. If
experiencing respiratory symptoms: Call a POISON CENTER or physician. IF ON
SKIN: Wash with plenty of soap and water. Wash contaminated clothing before reuse.
If skin irritation or rash occurs: Get medical attention. IF IN EYES: Rinse cautiously
with water for several minutes. Remove contact lenses, if present and easy to do.
Continue rinsing. If eye irritation persists: Get medical attention.
Store locked up. Protect from sunlight. Do not expose to temperatures exceeding 50
°C/122 °F. Store in a well-ventilated place.
Dispose of contents and container in accordance with all local, regional, national and
international regulations.
Read label before use. Keep out of reach of children. If medical advice is needed, have
product container or label at hand.
Hazards not otherwise
classified
Extremely flammable aerosol.
Contains gas under pressure; may explode if heated.
Harmful if inhaled.
Causes serious eye irritation.
Causes skin irritation.
May cause allergy or asthma symptoms or breathing difficulties if inhaled.
May cause an allergic skin reaction.
Suspected of causing cancer.
May cause respiratory irritation.
May cause drowsiness or dizziness.
May cause damage to organs through prolonged or repeated exposure.
Please refer to the SDS for additional information. Keep out of reach of children. Keep
upright in a cool, dry place. Do not discard empty can in trash compactor.
Supplemental label
elements
DELAYED EFFECTS FROM LONG TERM OVEREXPOSURE. Contains solvents which
can cause permanent brain and nervous system damage. Intentional misuse by
deliberately concentrating and inhaling the contents can be harmful or fatal. VAPOR
AND SPRAY MIST HARMFUL. Gives off harmful vapor of solvents and isocyanates.
DO NOT USE IF YOU HAVE CHRONIC (LONG-TERM) LUNG OR BREATHING
PROBLEMS, OR IF YOU HAVE EVER HAD A REACTION TO ISOCYANATES. USE
ONLY WITH ADEQUATE VENTILATION. WHERE OVERSPRAY IS PRESENT, A
POSITIVE PRESSURE AIR SUPPLIED RESPIRATOR (NIOSH approved) SHOULD BE
WORN TO PREVENT EXPOSURE. IF UNAVAILABLE, AN APPROPRIATE
PROPERLY FITTED APPROVED NIOSH VAPOR/PARTICULATE RESPIRATOR MAY
BE EFFECTIVE. Follow directions for respirator use. Wear the respirator for the whole
time of spraying and until all vapors and mists are gone. If you have any breathing
problems during use, LEAVE THE AREA and get fresh air. If problems remain or
happen later, IMMEDIATELY call a doctor - If not available get emergency medical
treatment. Have this label with you. Reacts with water in closed container to produce
pressure which may cause container to burst.
Date of issue/Date of revision

Section 3. Composition/information on ingredients
Diphenylmethane Diisocyanate Polymer
4, 4'-Diphenylmethane Diisocyanate
There are no additional ingredients present which, within the current knowledge of the supplier and in the
concentrations applicable, are classified as hazardous to health and hence require reporting in this section.
Other means of
identification
CAS number/other identifiers
Occupational exposure limits, if available, are listed in Section 8.
Any concentration shown as a range is to protect confidentiality or is due to batch variation.
Get medical attention. If necessary, call a poison center or physician.
Wash with plenty of soap and water. Wash contaminated clothing thoroughly with water
before removing it, or wear gloves. Continue to rinse for at least 10 minutes. Get
medical attention. In the event of any complaints or symptoms, avoid further exposure.
If it is suspected that fumes are still present, the rescuer should wear an appropriate
mask or self-contained breathing apparatus. It may be dangerous to the person
providing aid to give mouth-to-mouth resuscitation. Get medical attention. If necessary,
call a poison center or physician. In case of inhalation of decomposition products in a
fire, symptoms may be delayed. The exposed person may need to be kept under
medical surveillance for 48 hours. In the event of any complaints or symptoms, avoid
further exposure.
Section 4. First aid measures
Description of necessary first aid measures
Most important symptoms/effects, acute and delayed
Harmful if inhaled. Can cause central nervous system (CNS) depression. May cause
drowsiness or dizziness. May cause respiratory irritation. May cause allergy or asthma
symptoms or breathing difficulties if inhaled.
Can cause central nervous system (CNS) depression.
Causes skin irritation. May cause an allergic skin reaction.
Causes serious eye irritation.
Over-exposure signs/symptoms
Adverse symptoms may include the following:
respiratory tract irritation
coughing
wheezing and breathing difficulties
asthma
nausea or vomiting
headache
drowsiness/fatigue
dizziness/vertigo
Adverse symptoms may include the following:
pain or irritation
watering
redness
Potential acute health effects
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Section 4. First aid measures
Protection of first-aiders
No action shall be taken involving any personal risk or without suitable training. If it is
suspected that fumes are still present, the rescuer should wear an appropriate mask or
self-contained breathing apparatus. It may be dangerous to the person providing aid to
give mouth-to-mouth resuscitation. Wash contaminated clothing thoroughly with water
before removing it, or wear gloves.
In case of inhalation of decomposition products in a fire, symptoms may be delayed.
The exposed person may need to be kept under medical surveillance for 48 hours.
Adverse symptoms may include the following:
irritation
redness
See toxicological information (Section 11)
Indication of immediate medical attention and special treatment needed, if necessary
Section 5. Fire-fighting measures
Promptly isolate the scene by removing all persons from the vicinity of the incident if
there is a fire. No action shall be taken involving any personal risk or without suitable
training. Move containers from fire area if this can be done without risk. Use water
spray to keep fire-exposed containers cool.
Hazardous thermal
decomposition products
Specific hazards arising
from the chemical
Decomposition products may include the following materials:
carbon dioxide
carbon monoxide
nitrogen oxides
Extremely flammable aerosol. In a fire or if heated, a pressure increase will occur and
the container may burst, with the risk of a subsequent explosion. Gas may accumulate
in low or confined areas or travel a considerable distance to a source of ignition and
flash back, causing fire or explosion. Bursting aerosol containers may be propelled from
a fire at high speed. Runoff to sewer may create fire or explosion hazard.
Special protective
equipment for fire-fighters
Use an extinguishing agent suitable for the surrounding fire.
Suitable extinguishing
media
Unsuitable extinguishing
media
Special protective actions
for fire-fighters
Section 6. Accidental release measures
Environmental precautions
Personal precautions, protective equipment and emergency procedures
In the case of aerosols being ruptured, care should be taken due to the rapid escape of
the pressurized contents and propellant. If a large number of containers are ruptured,
treat as a bulk material spillage according to the instructions in the clean-up section.
Shut off all ignition sources. No flares, smoking or flames in hazard area.
For non-emergency
personnel
If specialized clothing is required to deal with the spillage, take note of any information in
Section 8 on suitable and unsuitable materials. See also the information in "For nonemergency personnel".
Date of issue/Date of revision

Section 6. Accidental release measures
Use spark-proof tools and explosion-proof equipment. Note: see Section 1 for
emergency contact information and Section 13 for waste disposal.
Use spark-proof tools and explosion-proof equipment.
Methods and materials for containment and cleaning up
Section 7. Handling and storage
Advice on general
occupational hygiene
Conditions for safe storage,
including any
incompatibilities
Workers should wash hands and face before eating, drinking and smoking. Remove
contaminated clothing and protective equipment before entering eating areas. See also
Section 8 for additional information on hygiene measures.
Store in accordance with local regulations. Protect from sunlight. Store locked up.
Eliminate all ignition sources.
Persons with a history of skin sensitization problems or asthma, allergies or chronic or
recurrent respiratory disease should not be employed in any process in which this
product is used. Pressurized container: protect from sunlight and do not expose to
temperatures exceeding 50°C. Do not pierce or burn, even after use. Avoid exposure obtain special instructions before use. Do not handle until all safety precautions have
been read and understood. Do not get in eyes or on skin or clothing. Use only with
adequate ventilation. Wear appropriate respirator when ventilation is inadequate. Store
and use away from heat, sparks, open flame or any other ignition source. Use
explosion-proof electrical (ventilating, lighting and material handling) equipment. Use
only non-sparking tools.
Precautions for safe handling
Diphenylmethane Diisocyanate Polymer
4, 4'-Diphenylmethane Diisocyanate
ACGIH TLV (United States, 3/2015).
TWA: 0.005 ppm 8 hours.
NIOSH REL (United States, 10/2013).
TWA: 0.05 mg/m³ 10 hours.
TWA: 0.005 ppm 10 hours.
CEIL: 0.2 mg/m³ 10 minutes.
CEIL: 0.02 ppm 10 minutes.
OSHA PEL (United States, 2/2013).
CEIL: 0.02 ppm
CEIL: 0.2 mg/m³
NIOSH REL (United States, 10/2013).
TWA: 1000 ppm 10 hours.
TWA: 1800 mg/m³ 10 hours.
OSHA PEL (United States, 2/2013).
TWA: 1000 ppm 8 hours.
TWA: 1800 mg/m³ 8 hours.
NIOSH REL (United States, 10/2013).
TWA: 800 ppm 10 hours.
TWA: 1900 mg/m³ 10 hours.
ACGIH TLV (United States, 3/2015).
STEL: 1000 ppm 15 minutes.
Section 8. Exposure controls/personal protection
Occupational exposure limits (OSHA United States)
Occupational exposure limits (Canada)
Date of issue/Date of revision

Section 8. Exposure controls/personal protection
Safety eyewear complying with an approved standard should be used when a risk
assessment indicates this is necessary to avoid exposure to liquid splashes, mists,
gases or dusts. If contact is possible, the following protection should be worn, unless
the assessment indicates a higher degree of protection: chemical splash goggles.
Emissions from ventilation or work process equipment should be checked to ensure
they comply with the requirements of environmental protection legislation. In some
cases, fume scrubbers, filters or engineering modifications to the process equipment
will be necessary to reduce emissions to acceptable levels.
Appropriate engineering
controls
Use only with adequate ventilation. Use process enclosures, local exhaust ventilation or
other engineering controls to keep worker exposure to airborne contaminants below any
recommended or statutory limits. The engineering controls also need to keep gas,
vapor or dust concentrations below any lower explosive limits. Use explosion-proof
ventilation equipment.
Wash hands, forearms and face thoroughly after handling chemical products, before
eating, smoking and using the lavatory and at the end of the working period.
Appropriate techniques should be used to remove potentially contaminated clothing.
Contaminated work clothing should not be allowed out of the workplace. Wash
contaminated clothing before reusing. Ensure that eyewash stations and safety
showers are close to the workstation location.
Individual protection measures
Diphenylmethane Diisocyanate Polymer
CA Alberta Provincial (Canada, 4/2009).
8 hrs OEL: 0.07 mg/m³ 8 hours.
8 hrs OEL: 0.005 ppm 8 hours.
CA British Columbia Provincial (Canada,
5/2015).
TWA: 0.005 ppm 8 hours.
C: 0.01 ppm
CA Ontario Provincial (Canada, 7/2015).
C: 0.02 ppm
TWA: 0.005 ppm 8 hours.
4, 4'-Diphenylmethane Diisocyanate
CA Alberta Provincial (Canada, 4/2009).
8 hrs OEL: 0.005 ppm 8 hours.
8 hrs OEL: 0.05 mg/m³ 8 hours.
CA British Columbia Provincial (Canada,
5/2015). Absorbed through skin. Skin
sensitizer.
TWA: 0.005 ppm 8 hours.
C: 0.01 ppm
CA Quebec Provincial (Canada, 1/2014).
Skin sensitizer.
TWAEV: 0.005 ppm 8 hours.
TWAEV: 0.051 mg/m³ 8 hours.
CA Ontario Provincial (Canada, 7/2015).
TWA: 0.005 ppm 8 hours.
CA Saskatchewan Provincial (Canada,
7/2013).
STEL: 0.015 ppm 15 minutes.
TWA: 0.005 ppm 8 hours.
Environmental exposure
controls
Date of issue/Date of revision

Section 8. Exposure controls/personal protection
Personal protective equipment for the body should be selected based on the task being
performed and the risks involved and should be approved by a specialist before
handling this product. When there is a risk of ignition from static electricity, wear antistatic protective clothing. For the greatest protection from static discharges, clothing
should include anti-static overalls, boots and gloves.
Appropriate footwear and any additional skin protection measures should be selected
based on the task being performed and the risks involved and should be approved by a
specialist before handling this product.
Section 9. Physical and chemical properties
13.5 kPa (101 mm Hg) [at 20°C]
Auto-ignition temperature
Closed cup: -29°C (-20.2°F) [Pensky-Martens Closed Cup]
Not available.
Not available.
Kinematic (room temperature): <0.205 cm2/s (<20.5 cSt)
Partition coefficient: noctanol/water
Flammability (solid, gas)
Lower and upper explosive
(flammable) limits
Decomposition temperature
Section 10. Stability and reactivity
Avoid all possible sources of ignition (spark or flame).
Possibility of hazardous
reactions
Under normal conditions of storage and use, hazardous reactions will not occur.
No specific test data related to reactivity available for this product or its ingredients.
Date of issue/Date of revision

Section 10. Stability and reactivity
Hazardous decomposition
products
Under normal conditions of storage and use, hazardous decomposition products should
not be produced.
Section 11. Toxicological information
Diphenylmethane
Diisocyanate Polymer
4, 4'-Diphenylmethane
Diisocyanate
Diphenylmethane
Diisocyanate Polymer
4, 4'-Diphenylmethane
Diisocyanate
Specific target organ toxicity (single exposure)
Diphenylmethane Diisocyanate Polymer
Respiratory tract
irritation
4, 4'-Diphenylmethane Diisocyanate
Respiratory tract
irritation
Respiratory tract
irritation and
Narcotic effects
Respiratory tract
irritation and
Target organs
Information on toxicological effects
Diphenylmethane
Diisocyanate Polymer
4, 4'-Diphenylmethane
Diisocyanate
Date of issue/Date of revision

Section 11. Toxicological information
Specific target organ toxicity (repeated exposure)
Diphenylmethane Diisocyanate Polymer
4, 4'-Diphenylmethane Diisocyanate
ASPIRATION HAZARD - Category 1
ASPIRATION HAZARD - Category 1
Information on the likely
routes of exposure
Harmful if inhaled. Can cause central nervous system (CNS) depression. May cause
drowsiness or dizziness. May cause respiratory irritation. May cause allergy or asthma
symptoms or breathing difficulties if inhaled.
Can cause central nervous system (CNS) depression.
Causes skin irritation. May cause an allergic skin reaction.
Causes serious eye irritation.
Symptoms related to the physical, chemical and toxicological characteristics
Adverse symptoms may include the following:
respiratory tract irritation
coughing
wheezing and breathing difficulties
asthma
nausea or vomiting
headache
drowsiness/fatigue
dizziness/vertigo
unconsciousness
Adverse symptoms may include the following:
irritation
redness
Adverse symptoms may include the following:
pain or irritation
watering
redness
Delayed and immediate effects and also chronic effects from short and long term exposure
Potential acute health effects
Potential immediate
effects
Potential delayed effects
Potential immediate
effects
Date of issue/Date of revision

May cause damage to organs through prolonged or repeated exposure. Once
sensitized, a severe allergic reaction may occur when subsequently exposed to very low
levels.
Suspected of causing cancer. Risk of cancer depends on duration and level of
exposure.
No known significant effects or critical hazards.
No known significant effects or critical hazards.
No known significant effects or critical hazards.
No known significant effects or critical hazards.
Potential chronic health effects
Numerical measures of toxicity
Inhalation (dusts and mists)
Potential delayed effects
Section 12. Ecological information
Bioaccumulative potential
No known significant effects or critical hazards.
4, 4'-Diphenylmethane
Diisocyanate
Persistence and degradability
Soil/water partition
coefficient (KOC)
Section 13. Disposal considerations
The generation of waste should be avoided or minimized wherever possible. Disposal
of this product, solutions and any by-products should at all times comply with the
requirements of environmental protection and waste disposal legislation and any
regional local authority requirements. Dispose of surplus and non-recyclable products
via a licensed waste disposal contractor. Waste should not be disposed of untreated to
the sewer unless fully compliant with the requirements of all authorities with jurisdiction.
Waste packaging should be recycled. Incineration or landfill should only be considered
when recycling is not feasible. This material and its container must be disposed of in a
safe way. Empty containers or liners may retain some product residues.
Date of issue/Date of revision

Section 14. Transport information
Emergency
schedules (EmS)
F-D, S-U
Transport
hazard class(es)
Special precautions for user
Transport in bulk according
to Annex II of MARPOL and
the IBC Code
Product classified
as per the
following sections
of the
Transportation of
Dangerous Goods
Regulations: 2.
13-2.17 (Class 2).
Multi-modal shipping descriptions are provided for informational purposes and do not
consider container sizes. The presence of a shipping description for a particular
mode of transport (sea, air, etc.), does not indicate that the product is packaged
suitably for that mode of transport. All packaging must be reviewed for suitability
prior to shipment, and compliance with the applicable regulations is the sole
responsibility of the person offering the product for transport. People loading and
unloading dangerous goods must be trained on all of the risks deriving from the
substances and on all actions in case of emergency situations.
Section 15. Regulatory information
SARA 313 (40 CFR 372.45) supplier notification can be found on the Environmental Data Sheet.
Date of issue/Date of revision

Section 16. Other information
Date of issue/Date of
revision
ATE = Acute Toxicity Estimate
BCF = Bioconcentration Factor
GHS = Globally Harmonized System of Classification and Labelling of Chemicals
IATA = International Air Transport Association
IBC = Intermediate Bulk Container
IMDG = International Maritime Dangerous Goods
LogPow = logarithm of the octanol/water partition coefficient
MARPOL = International Convention for the Prevention of Pollution From Ships, 1973
as modified by the Protocol of 1978. ("Marpol" = marine pollution)
UN = United Nations
Hazardous Material Information System (U.S.A.)
Caution: HMIS® ratings are based on a 0-4 rating scale, with 0 representing minimal hazards or risks, and 4
representing significant hazards or risks Although HMIS® ratings are not required on SDSs under 29 CFR 1910.
1200, the preparer may choose to provide them. HMIS® ratings are to be used with a fully implemented HMIS®
program. HMIS® is a registered mark of the National Paint & Coatings Association (NPCA). HMIS® materials may
be purchased exclusively from J. J. Keller (800) 327-6868.
The customer is responsible for determining the PPE code for this material.
Procedure used to derive the classification
FLAMMABLE AEROSOLS - Category 1
GASES UNDER PRESSURE - Compressed gas
ACUTE TOXICITY (inhalation) - Category 4
SKIN CORROSION/IRRITATION - Category 2
SERIOUS EYE DAMAGE/ EYE IRRITATION - Category 2A
RESPIRATORY SENSITIZATION - Category 1
SKIN SENSITIZATION - Category 1
CARCINOGENICITY - Category 2
SPECIFIC TARGET ORGAN TOXICITY (SINGLE
EXPOSURE) (Respiratory tract irritation) - Category 3
SPECIFIC TARGET ORGAN TOXICITY (SINGLE
EXPOSURE) (Narcotic effects) - Category 3
SPECIFIC TARGET ORGAN TOXICITY (REPEATED
EXPOSURE) - Category 2
Date of issue/Date of revision

Section 16. Other information
It is recommended that each customer or recipient of this Safety Data Sheet (SDS) study it carefully and consult
resources, as necessary or appropriate, to become aware of and understand the data contained in this SDS and
any hazards associated with the product. This information is provided in good faith and believed to be accurate
as of the effective date herein. However, no warranty, express or implied, is given. The information presented
here applies only to the product as shipped. The addition of any material can change the composition, hazards
and risks of the product. Products shall not be repackaged, modified, or tinted except as specifically instructed
by Sherwin-Williams, including but not limited to the incorporation of non Sherwin-Williams products or the use
or addition of products in proportions not specified by Sherwin-Williams. Regulatory requirements are subject
to change and may differ between various locations and jurisdictions. The customer/buyer/user is responsible to
ensure that his activities comply with all country, federal, state, provincial or local laws. The conditions for use
of the product are not under the control of the manufacturer; the customer/buyer/user is responsible to
determine the conditions necessary for the safe use of this product. The customer/buyer/user should not use the
product for any purpose other than the purpose shown in the applicable section of this SDS without first
referring to the supplier and obtaining written handling instructions. Due to the proliferation of sources for
information such as manufacturer-specific SDS, the manufacturer cannot be responsible for SDSs obtained from
any other source.
Date of issue/Date of revision