Product Name: GREAT STUFF PRO(TM) Gaps & Cracks 24oz Gun 

HC Foam Sealant US

Issue Date: 01/08/2010 

Print Date: 18 Aug 2011

®(TM)*Trademark of The Dow Chemical Company ("Dow") or an affiliated company of Dow

 Page 1 of 12

The Dow Chemical Company encourages and expects you to read and understand the entire (M)SDS, 

as there is important information throughout the document. We expect you to follow the precautions 

identified in this document unless your use conditions would necessitate other appropriate methods or 

actions. 

1. Product and Company Identification 

Product Name

GREAT STUFF PRO(TM) Gaps & Cracks 24oz Gun HC Foam Sealant US

COMPANY IDENTIFICATION

The Dow Chemical Company 

2030 Willard H. Dow Center 

Midland, MI 48674 

USA 

Customer Information Number: 800-258-2436

EMERGENCY TELEPHONE NUMBER

24-Hour Emergency Contact: 989-636-4400 

Local Emergency Contact: 989-636-4400 

2. Hazards Identification 

Emergency Overview

Color: Orange 

Physical State: Foam 

Odor: Odorless 

Hazards of product:

WARNING! May cause allergic skin reaction. May cause allergic respiratory reaction. 

May cause eye irritation. May cause skin irritation. May cause lung injury. Vapor 

reduces oxygen available for breathing. May cause anesthetic effects. May cause 

respiratory tract irritation. Vapors may travel a long distance; ignition and/or flash back 

may occur. Isolate area. Keep upwind of spill. Stay out of low areas. Aerosol cans 

exposed to fire can rupture becoming flaming projectiles. Elevated temperatures can 

cause hazardous polymerization. Toxic fumes may be released in fire situations. 

Containers are under high pressure. 

OSHA Hazard Communication Standard

This product is a "Hazardous Chemical" as defined by the OSHA Hazard Communication Standard, 29 

CFR 1910.1200. 

Material Safety Data Sheet

The Dow Chemical Company
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Issue Date: 01/08/2010

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Potential Health Effects

Eye Contact: May cause eye irritation. May cause slight temporary corneal injury. 

Skin Contact: Prolonged contact may cause moderate skin irritation with local redness. Material may 

stick to skin causing irritation upon removal. May stain skin. 

Skin Absorption: Prolonged skin contact is unlikely to result in absorption of harmful amounts. 

Skin Sensitization: Skin contact may cause an allergic skin reaction. Animal studies have shown that 

skin contact with isocyanates may play a role in respiratory sensitization. 

Inhalation: In confined or poorly ventilated areas, vapor can easily accumulate and can cause 

unconsciousness and death due to displacement of oxygen. Excessive exposure may cause irritation 

to upper respiratory tract (nose and throat) and lungs. May cause pulmonary edema (fluid in the 

lungs.) Effects may be delayed. May cause central nervous system depression. Symptoms of 

excessive exposure may be anesthetic or narcotic effects; dizziness and drowsiness may be 

observed. Excessive exposure may increase sensitivity to epinephrine and increase myocardial 

irritability (irregular heartbeats). Decreased lung function has been associated with overexposure to 

isocyanates. 

Respiratory Sensitization: May cause allergic respiratory response. MDI concentrations below the 

exposure guidelines may cause allergic respiratory reactions in individuals already sensitized. 

Asthma-like symptoms may include coughing, difficult breathing and a feeling of tightness in the chest. 

Occasionally, breathing difficulties may be life threatening. 

Ingestion: Low toxicity if swallowed. Small amounts swallowed incidentally as a result of normal 

handling operations are not likely to cause injury; however, swallowing larger amounts may cause 

injury. Observations in animals include: Gastrointestinal irritation. 

Effects of Repeated Exposure: Tissue injury in the upper respiratory tract and lungs has been 

observed in laboratory animals after repeated excessive exposures to MDI/polymeric MDI aerosols. 

For the minor component(s): In animals, effects have been reported on the following organs: Kidney. 

Liver. 

Cancer Information: Lung tumors have been observed in laboratory animals exposed to respirable 

aerosol droplets of MDI/Polymeric MDI (6 mg/m3) for their lifetime. Tumors occurred concurrently with 

respiratory irritation and lung injury. Current exposure guidelines are expected to protect against these 

effects reported for MDI. 

Birth Defects/Developmental Effects: In laboratory animals, MDI/polymeric MDI did not cause birth 

defects; other fetal effects occurred only at high doses which were toxic to the mother. 

Component CAS # Amount 

Isocyanic acid, polymethylenepolyphenylene ester, 

polymer with .alpha.,.alpha.',.alpha.''-1,2,3-

propanetriyltris[.omega.-hydroxypoly

57029-46-6 >= 30.0 - <= 60.0 %

Polymethylenepolyphenyl polyisocyanate, 

polypropyleneglycol copolymer

53862-89-8 >= 5.0 - <= 10.0 %

Diphenylmethane Diisocyanate, isomers and homologues 9016-87-9 >= 10.0 - <= 30.0 %

Paraffin waxes and Hydrocarbon waxes, chlorinated 63449-39-8 >= 5.0 - <= 10.0 %

Isobutane 75-28-5 >= 3.0 - <= 7.0 %

Propane 74-98-6 >= 1.0 - <= 5.0 %

Methyl ether 115-10-6 >= 1.0 - <= 5.0 %

4,4' -Methylenediphenyl diisocyanate 101-68-8 >= 7.0 - <= 13.0 %

N,N'-Dimorpholinodiethylether 6425-39-4 >= 0.5 - <= 5.0 %

Note: CAS 101-68-8 is an MDI isomer that is part of CAS 9016-87-9. 

4. First-aid measures 

Eye Contact: Immediately flush eyes with water; remove contact lenses, if present, after the first 5 

minutes, then continue flushing eyes for at least 15 minutes. Obtain medical attention without delay, 

preferably from an ophthalmologist. 

3. Composition Information
Product Name: GREAT STUFF PRO(TM) Gaps & Cracks 24oz Gun 

HC Foam Sealant US

Issue Date: 01/08/2010

Page 3 of 12

Skin Contact: Remove material from skin immediately by washing with soap and plenty of water. 

Remove contaminated clothing and shoes while washing. Seek medical attention if irritation persists. 

Wash clothing before reuse. An MDI skin decontamination study demonstrated that cleaning very 

soon after exposure is important, and that a polyglycol-based skin cleanser or corn oil may be more 

effective than soap and water. Discard items which cannot be decontaminated, including leather 

articles such as shoes, belts and watchbands. 

Inhalation: Move person to fresh air. If not breathing, give artificial respiration; if by mouth to mouth 

use rescuer protection (pocket mask, etc). If breathing is difficult, oxygen should be administered by 

qualified personnel. Call a physician or transport to a medical facility. 

Ingestion: If swallowed, seek medical attention. Do not induce vomiting unless directed to do so by 

medical personnel. 

Notes to Physician: Maintain adequate ventilation and oxygenation of the patient. May cause 

respiratory sensitization or asthma-like symptoms. Bronchodilators, expectorants and antitussives 

may be of help. Treat bronchospasm with inhaled beta2 agonist and oral or parenteral corticosteroids. 

Respiratory symptoms, including pulmonary edema, may be delayed. Persons receiving significant 

exposure should be observed 24-48 hours for signs of respiratory distress. Exposure may increase 

"myocardial irritability". Do not administer sympathomimetic drugs such as epinephrine unless 

absolutely necessary. If you are sensitized to diisocyanates, consult your physician regarding working 

with other respiratory irritants or sensitizers. No specific antidote. Treatment of exposure should be 

directed at the control of symptoms and the clinical condition of the patient. 

Medical Conditions Aggravated by Exposure: Excessive exposure may aggravate preexisting 

asthma and other respiratory disorders (e.g. emphysema, bronchitis, reactive airways dysfunction 

syndrome). 

Emergency Personnel Protection: First Aid responders should pay attention to self-protection and 

use the recommended protective clothing (chemical resistant gloves, splash protection). If potential for 

exposure exists refer to Section 8 for specific personal protective equipment. 

5. Fire Fighting Measures 

Extinguishing Media: Water fog or fine spray. Dry chemical fire extinguishers. Carbon dioxide fire 

extinguishers. Foam. Do not use direct water stream. Straight or direct water streams may not be 

effective to extinguish fire. Alcohol resistant foams (ATC type) are preferred. General purpose 

synthetic foams (including AFFF) or protein foams may function, but will be less effective. 

Fire Fighting Procedures: Keep people away. Isolate fire and deny unnecessary entry. Stay 

upwind. Keep out of low areas where gases (fumes) can accumulate. Water may not be effective in 

extinguishing fire. Do not use direct water stream. May spread fire. Fight fire from protected location 

or safe distance. Consider the use of unmanned hose holders or monitor nozzles. Eliminate ignition 

sources. Move container from fire area if this is possible without hazard. Use water spray to cool fireexposed containers and fire-affected zone until fire is out. 

Special Protective Equipment for Firefighters: Wear positive-pressure self-contained breathing 

apparatus (SCBA) and protective fire fighting clothing (includes fire fighting helmet, coat, trousers, 

boots, and gloves). Avoid contact with this material during fire fighting operations. If contact is likely, 

change to full chemical resistant fire fighting clothing with self-contained breathing apparatus. If this is 

not available, wear full chemical resistant clothing with self-contained breathing apparatus and fight fire 

from a remote location. For protective equipment in post-fire or non-fire clean-up situations, refer to 

the relevant sections. 

Unusual Fire and Explosion Hazards: Contains flammable propellant. Aerosol cans exposed to fire 

can rupture and become flaming projectiles. Propellant release may result in a fireball. Vapors are 

heavier than air and may travel a long distance and accumulate in low lying areas. Ignition and/or flash 

back may occur. Dense smoke is produced when product burns. 

Hazardous Combustion Products: During a fire, smoke may contain the original material in addition 

to combustion products of varying composition which may be toxic and/or irritating. Combustion 

products may include and are not limited to: Nitrogen oxides. Isocyanates. Hydrogen chloride. 

Carbon monoxide. Carbon dioxide. Hydrogen cyanide. 
Product Name: GREAT STUFF PRO(TM) Gaps & Cracks 24oz Gun 

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Issue Date: 01/08/2010

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6. Accidental Release Measures 

Steps to be Taken if Material is Released or Spilled: Contain spilled material if possible. Absorb 

with materials such as: Sawdust. Dirt. Vermiculite. Sand. Clay. Cob grit. Milsorb®. Do NOT use 

absorbent materials such as: Cement powder (Note: may generate heat). Collect in suitable and 

properly labeled open containers. Do not place in sealed containers. Suitable containers include: 

Metal drums. Plastic drums. Polylined fiber pacs. Wash the spill site with large quantities of water. 

Attempt to neutralize by adding suitable decontaminant solution: Formulation 1: sodium carbonate 5 - 

10%; liquid detergent 0.2 - 2%; water to make up to 100%, OR Formulation 2: concentrated ammonia 

solution 3 - 8%; liquid detergent 0.2 - 2%; water to make up to 100%. If ammonia is used, use good 

ventilation to prevent vapor exposure. Pump with explosion-proof equipment. If available, use foam to 

smother or suppress. Contact Dow for clean-up assistance. See Section 13, Disposal 

Considerations, for additional information. 

Personal Precautions: Isolate area. Keep unnecessary and unprotected personnel from entering the 

area. Keep personnel out of low areas. Keep personnel out of confined or poorly ventilated areas. 

Keep upwind of spill. Ventilate area of leak or spill. Confined space entry procedures must be 

followed before entering the area. Eliminate all sources of ignition in vicinity of spill or released vapor 

to avoid fire or explosion. Check area with combustible gas detector before reentering area. Ground 

and bond all containers and handling equipment. See Section 10 for more specific information. Refer 

to Section 7, Handling, for additional precautionary measures. Use appropriate safety equipment. For 

additional information, refer to Section 8, Exposure Controls and Personal Protection. 

Environmental Precautions: Prevent from entering into soil, ditches, sewers, waterways and/or 

groundwater. See Section 12, Ecological Information. Spills or discharge to natural waterways is likely 

to kill aquatic organisms. 

7. Handling and Storage 

Handling 

General Handling: Avoid contact with eyes, skin, and clothing. Wash thoroughly after handling. Use 

only with adequate ventilation. Avoid breathing vapor. Keep container closed. No smoking, open 

flames or sources of ignition in handling and storage area. Vapors are heavier than air and may travel 

a long distance and accumulate in low lying areas. Ignition and/or flash back may occur. Contents 

under pressure. Do not puncture or incinerate container. Containers, even those that have been 

emptied, can contain vapors. Do not cut, drill, grind, weld, or perform similar operations on or near 

empty containers. Do not enter confined spaces unless adequately ventilated. See Section 8, 

EXPOSURE CONTROLS AND PERSONAL PROTECTION. 

Storage 

Protect from atmospheric moisture. Flammable mixtures may exist within the vapor space of 

containers at room temperature. Minimize sources of ignition, such as static build-up, heat, spark or 

flame. Maintain a nitrogen atmosphere. Do not store product contaminated with water to prevent 

potential hazardous reaction. See Section 10 for more specific information. Store in a dry place. 

Shelf life: Use within Storage temperature: 

12 Months 20 - 30 °C 

8. Exposure Controls / Personal Protection 

Exposure Limits

Component List Type Value |

4,4' -Methylenediphenyl 

diisocyanate

ACGIH TWA 0.005 ppm 

OSHA Table 

Z-1

Ceiling 0.2 mg/m3 0.02 ppm 

|

Methyl ether AIHA WEEL TWA 1,880 mg/m3 1,000 ppm 
Product Name: GREAT STUFF PRO(TM) Gaps & Cracks 24oz Gun 

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Issue Date: 01/08/2010

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|

Isobutane ACGIH TWA 1,000 ppm |

Propane OSHA Table 

Z-1

PEL 1,800 mg/m3 1,000 ppm 

ACGIH TWA 1,000 ppm |

Personal Protection

Eye/Face Protection: Use safety glasses (with side shields). 

Skin Protection: Use protective clothing chemically resistant to this material. Selection of specific 

items such as face shield, boots, apron, or full body suit will depend on the task. 

Hand protection: Use gloves chemically resistant to this material. Examples of preferred 

glove barrier materials include: Butyl rubber. Chlorinated polyethylene. Polyethylene. Ethyl 

vinyl alcohol laminate ("EVAL"). Examples of acceptable glove barrier materials include: 

Neoprene. Nitrile/butadiene rubber ("nitrile" or "NBR"). Viton. Polyvinyl chloride ("PVC" or 

"vinyl"). NOTICE: The selection of a specific glove for a particular application and duration of 

use in a workplace should also take into account all relevant workplace factors such as, but 

not limited to: Other chemicals which may be handled, physical requirements (cut/puncture 

protection, dexterity, thermal protection), potential body reactions to glove materials, as well as 

the instructions/specifications provided by the glove supplier. 

Respiratory Protection: Atmospheric levels should be maintained below the exposure guideline. 

When atmospheric levels may exceed the exposure guideline, use an approved air-purifying respirator 

equipped with an organic vapor sorbent and a particle filter. For situations where the atmospheric 

levels may exceed the level for which an air-purifying respirator is effective, use a positive-pressure 

air-supplying respirator (air line or self-contained breathing apparatus). For emergency response or 

for situations where the atmospheric level is unknown, use an approved positive-pressure selfcontained breathing apparatus or positive-pressure air line with auxiliary self-contained air supply. In 

confined or poorly ventilated areas, use an approved self-contained breathing apparatus or positive 

pressure air line with auxiliary self-contained air supply. The following should be effective types of airpurifying respirators: Organic vapor cartridge with a particulate pre-filter. 

Ingestion: Use good personal hygiene. Do not consume or store food in the work area. Wash hands 

before smoking or eating. 

Engineering Controls

Ventilation: Use only with adequate ventilation. Local exhaust ventilation may be necessary for some 

operations. Provide general and/or local exhaust ventilation to control airborne levels below the 

exposure guidelines. Exhaust systems should be designed to move the air away from the source of 

vapor/aerosol generation and people working at this point. The odor and irritancy of this material are 

inadequate to warn of excessive exposure. Lethal concentrations may exist in areas with poor 

ventilation. 

9. Physical and Chemical Properties 

Physical State Foam 

Color Orange 

Odor Odorless 

Odor Threshold No test data available

Flash Point - Closed Cup 104 °C (219 °F) Estimated. Flammable gas. 

Flammability (solid, gas) Flammable gas. 

Flammable Limits In Air Lower: No test data available 

Upper: No test data available 

Autoignition Temperature No test data available

Vapor Pressure 1,100 kPa @ 55 °C Supplier 

Boiling Point (760 mmHg) Not applicable. 

Vapor Density (air = 1) No test data available

Specific Gravity (H2O = 1) 1.06 Calculated 

Freezing Point No test data available

Melting Point No test data available
Product Name: GREAT STUFF PRO(TM) Gaps & Cracks 24oz Gun 

HC Foam Sealant US

Issue Date: 01/08/2010

Page 6 of 12

Solubility in water (by 

weight)

Not applicable

pH Not applicable

Decomposition 

Temperature

No test data available

Evaporation Rate (Butyl 

Acetate = 1)

No test data available

Kinematic Viscosity Not applicable

10. Stability and Reactivity 

Stability/Instability 

Stable under recommended storage conditions. See Storage, Section 7. Unstable at elevated 

temperatures. 

Conditions to Avoid: Avoid temperatures above 50 °C (122 °F). Elevated temperatures can cause 

container to vent and/or rupture. Exposure to elevated temperatures can cause product to 

decompose. 

Incompatible Materials: Avoid contact with: Acids. Alcohols. Amines. Ammonia. Bases. Metal 

compounds. Strong oxidizers. Products based on diisocyanates like TDI and MDI react with many 

materials to release heat. The reaction rate increases with temperature as well as with increased 

contact; these reactions can become violent. Contact is increased by stirring or if the other material 

acts as a solvent. Products based on diisocyanates such as TDI and MDI are not soluble in water and 

will sink to the bottom, but react slowly at the interface. The reaction forms carbon dioxide gas and a 

layer of solid polyurea. Reaction with water will generate carbon dioxide and heat. 

Hazardous Polymerization 

Can occur. Elevated temperatures can cause hazardous polymerization. 

Thermal Decomposition 

Decomposition products depend upon temperature, air supply and the presence of other materials. 

Toxic gases are released during decomposition. 

11. Toxicological Information 

Acute Toxicity 

Ingestion 

Single dose oral LD50 has not been determined. Estimated. LD50, Rat > 10,000 mg/kg

Skin Absorption 

The dermal LD50 has not been determined. 

Inhalation 

The LC50 has not been determined. 

Sensitization

Skin 

Skin contact may cause an allergic skin reaction. Animal studies have shown that skin contact with 

isocyanates may play a role in respiratory sensitization. 

Respiratory

May cause allergic respiratory response. MDI concentrations below the exposure guidelines may 

cause allergic respiratory reactions in individuals already sensitized. Asthma-like symptoms may 

include coughing, difficult breathing and a feeling of tightness in the chest. Occasionally, breathing 

difficulties may be life threatening. 

Repeated Dose Toxicity

Tissue injury in the upper respiratory tract and lungs has been observed in laboratory animals after 

repeated excessive exposures to MDI/polymeric MDI aerosols. For the minor component(s): In 

animals, effects have been reported on the following organs: Kidney. Liver. 

Chronic Toxicity and Carcinogenicity 
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Lung tumors have been observed in laboratory animals exposed to respirable aerosol droplets of 

MDI/Polymeric MDI (6 mg/m3) for their lifetime. Tumors occurred concurrently with respiratory 

irritation and lung injury. Current exposure guidelines are expected to protect against these effects 

reported for MDI. 

Developmental Toxicity

In laboratory animals, MDI/polymeric MDI did not cause birth defects; other fetal effects occurred only 

at high doses which were toxic to the mother. 

Reproductive Toxicity

No relevant information found. 

Genetic Toxicology 

In vitro genetic toxicity studies were negative for component(s) tested. Genetic toxicity data on MDI 

are inconclusive. MDI was weakly positive in some in vitro studies; other in vitro studies were negative. 

Animal mutagenicity studies were predominantly negative. 

12. Ecological Information 

ENVIRONMENTAL FATE

Data for Component: Isocyanic acid, polymethylenepolyphenylene ester, polymer with 

.alpha.,.alpha.',.alpha.''-1,2,3-propanetriyltris[.omega.-hydroxypoly

Movement & Partitioning 

In the aquatic and terrestrial environment, movement is expected to be limited by its reaction 

with water forming predominantly insoluble polyureas. 

Persistence and Degradability 

In the aquatic and terrestrial environment, material reacts with water forming predominantly 

insoluble polyureas which appear to be stable. In the atmospheric environment, material is 

expected to have a short tropospheric half-life, based on calculations and by analogy with 

related diisocyanates. 

Data for Component: Polymethylenepolyphenyl polyisocyanate, polypropyleneglycol copolymer

Movement & Partitioning 

In the aquatic and terrestrial environment, movement is expected to be limited by its reaction 

with water forming predominantly insoluble polyureas. 

Persistence and Degradability 

In the aquatic and terrestrial environment, material reacts with water forming predominantly 

insoluble polyureas which appear to be stable. In the atmospheric environment, material is 

expected to have a short tropospheric half-life, based on calculations and by analogy with 

related diisocyanates. 

Data for Component: Diphenylmethane Diisocyanate, isomers and homologues

Movement & Partitioning 

In the aquatic and terrestrial environment, movement is expected to be limited by its reaction 

with water forming predominantly insoluble polyureas. 

Persistence and Degradability 

In the aquatic and terrestrial environment, material reacts with water forming predominantly 

insoluble polyureas which appear to be stable. In the atmospheric environment, material is 

expected to have a short tropospheric half-life, based on calculations and by analogy with 

related diisocyanates. 

Data for Component: Paraffin waxes and Hydrocarbon waxes, chlorinated

Movement & Partitioning 

Bioconcentration potential is low (BCF less than 100 or log Pow greater than 7). Expected to 

be relatively immobile in soil (Koc > 5000). Given its very low Henry's constant, volatilization 

from natural bodies of water or moist soil is not expected to be an important fate process. 

Henry's Law Constant (H): < 1.0E-07 atm*m3/mole; 25 °C Estimated. 
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Partition coefficient, n-octanol/water (log Pow): 7.4 Estimated. 

Partition coefficient, soil organic carbon/water (Koc): > 5,000 Estimated. 

Persistence and Degradability 

Expected to degrade only slowly in the environment. 

Theoretical Oxygen Demand: 2.89 mg/mg 

Data for Component: Isobutane

Movement & Partitioning 

Bioconcentration potential is low (BCF less than 100 or log Pow less than 3). Potential for 

mobility in soil is very high (Koc between 0 and 50). 

Henry's Law Constant (H): 1.19E+00 atm*m3/mole; 25 °C Measured 

Partition coefficient, n-octanol/water (log Pow): 2.76 Measured 

Partition coefficient, soil organic carbon/water (Koc): 35 Estimated. 

Distribution in Environment: Mackay Level 1 Fugacity Model: 

Air Water. Biota Soil Sediment

100 % 0 % 0 % 0 % 0 %

Persistence and Degradability 

Biodegradation may occur under aerobic conditions (in the presence of oxygen). 

Indirect Photodegradation with OH Radicals

Rate Constant Atmospheric Half-life Method

2.44E-12 cm3/s 4.4 d Estimated.

Theoretical Oxygen Demand: 3.58 mg/mg 

Data for Component: Propane

Movement & Partitioning 

Bioconcentration potential is low (BCF less than 100 or log Pow less than 3). Potential for 

mobility in soil is very high (Koc between 0 and 50). 

Henry's Law Constant (H): 7.07E-01 atm*m3/mole; 25 °C Measured 

Partition coefficient, n-octanol/water (log Pow): 2.36 Measured 

Partition coefficient, soil organic carbon/water (Koc): 24 - 460 Estimated. 

Distribution in Environment: Mackay Level 1 Fugacity Model: 

Air Water. Biota Soil Sediment

100 % 0 % 0 % 0 % 0 %

Persistence and Degradability 

No relevant information found. 

Indirect Photodegradation with OH Radicals

Rate Constant Atmospheric Half-life Method

1.27E-12 cm3/s 8.4 d Estimated.

Theoretical Oxygen Demand: 3.64 mg/mg 

Data for Component: Methyl ether

Movement & Partitioning 

Bioconcentration potential is low (BCF less than 100 or log Pow less than 3). Potential for 

mobility in soil is very high (Koc between 0 and 50). 

Henry's Law Constant (H): 9.78E-04 atm*m3/mole; 25 °C Measured 

Partition coefficient, n-octanol/water (log Pow): 0.10 Measured 

Partition coefficient, soil organic carbon/water (Koc): 1.29 - 14 Estimated. 

Persistence and Degradability 

Material is expected to biodegrade only very slowly (in the environment). Fails to pass 

OECD/EEC tests for ready biodegradability. 

Indirect Photodegradation with OH Radicals

Rate Constant Atmospheric Half-life Method

1.66E-12 cm3/s 6.4 d Estimated.

OECD Biodegradation Tests: 

Biodegradation Exposure Time Method

5 % 28 d OECD 301A Test

Theoretical Oxygen Demand: 2.08 mg/mg 
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Data for Component: 4,4' -Methylenediphenyl diisocyanate

Movement & Partitioning 

In the aquatic and terrestrial environment, movement is expected to be limited by its reaction 

with water forming predominantly insoluble polyureas. 

Persistence and Degradability 

In the aquatic and terrestrial environment, material reacts with water forming predominantly 

insoluble polyureas which appear to be stable. In the atmospheric environment, material is 

expected to have a short tropospheric half-life, based on calculations and by analogy with 

related diisocyanates. 

Data for Component: N,N'-Dimorpholinodiethylether

Movement & Partitioning 

Bioconcentration potential is low (BCF < 100 or Log Pow < 3). Potential for mobility in soil is 

very high (Koc between 0 and 50). Given its very low Henry's constant, volatilization from 

natural bodies of water or moist soil is not expected to be an important fate process. 

Henry's Law Constant (H): 3.79E-18 atm*m3/mole; 25 °C Estimated. 

Partition coefficient, n-octanol/water (log Pow): -1.31 Estimated. 

Partition coefficient, soil organic carbon/water (Koc): 10 Estimated. 

Persistence and Degradability 

Indirect Photodegradation with OH Radicals

Rate Constant Atmospheric Half-life Method

3.5646E-10 cm3/s 0.03 d Estimated.

Theoretical Oxygen Demand: 2.49 mg/mg 

ECOTOXICITY 

Data for Component: Isocyanic acid, polymethylenepolyphenylene ester, polymer with 

.alpha.,.alpha.',.alpha.''-1,2,3-propanetriyltris[.omega.-hydroxypoly

The measured ecotoxicity is that of the hydrolyzed product, generally under conditions 

maximizing production of soluble species. Material is practically non-toxic to aquatic 

organisms on an acute basis (LC50/EC50/EL50/LL50 >100 mg/L in the most sensitive species 

tested). 

Toxicity to Soil Dwelling Organisms 

LC50, Earthworm Eisenia foetida, adult, 14 d: > 1,000 mg/kg 

Data for Component: Polymethylenepolyphenyl polyisocyanate, polypropyleneglycol copolymer

The measured ecotoxicity is that of the hydrolyzed product, generally under conditions 

maximizing production of soluble species. Material is practically non-toxic to aquatic 

organisms on an acute basis (LC50/EC50/EL50/LL50 >100 mg/L in the most sensitive species 

tested). 

Toxicity to Soil Dwelling Organisms 

LC50, Earthworm Eisenia foetida, adult, 14 d: > 1,000 mg/kg 

Data for Component: Diphenylmethane Diisocyanate, isomers and homologues

The measured ecotoxicity is that of the hydrolyzed product, generally under conditions 

maximizing production of soluble species. Material is practically non-toxic to aquatic 

organisms on an acute basis (LC50/EC50/EL50/LL50 >100 mg/L in the most sensitive species 

tested). 

Toxicity to Soil Dwelling Organisms 

LC50, Earthworm Eisenia foetida, adult, 14 d: > 1,000 mg/kg 

Data for Component: Paraffin waxes and Hydrocarbon waxes, chlorinated

Material is very highly toxic to aquatic organisms on an acute basis (LC50/EC50 <0.1 mg/L in 

the most sensitive species). 

Fish Acute & Prolonged Toxicity 

LC50, rainbow trout (Oncorhynchus mykiss), static, 96 h: > 100 mg/l

Aquatic Invertebrate Acute Toxicity 
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EC50, water flea Daphnia magna, immobilization: 0.037 mg/l 

Data for Component: Isobutane

No relevant information found. 

Data for Component: Propane

No relevant information found. 

Data for Component: Methyl ether

Material is practically non-toxic to aquatic organisms on an acute basis 

(LC50/EC50/EL50/LL50 >100 mg/L in the most sensitive species tested). 

Fish Acute & Prolonged Toxicity 

LC50, guppy (Poecilia reticulata), 96 h: > 4,000 mg/l

Aquatic Invertebrate Acute Toxicity 

LC50, water flea Daphnia magna, 48 h: > 4,000 mg/l 

Data for Component: 4,4' -Methylenediphenyl diisocyanate

The measured ecotoxicity is that of the hydrolyzed product, generally under conditions 

maximizing production of soluble species. Material is practically non-toxic to aquatic 

organisms on an acute basis (LC50/EC50/EL50/LL50 >100 mg/L in the most sensitive species 

tested). 

Toxicity to Soil Dwelling Organisms 

LC50, Earthworm Eisenia foetida, adult, 14 d: > 1,000 mg/kg 

Data for Component: N,N'-Dimorpholinodiethylether

Material is practically non-toxic to fish on an acute basis (LC50 > 100 mg/L). May increase pH 

of aquatic systems to > pH 10 which may be toxic to aquatic organisms. 

Fish Acute & Prolonged Toxicity 

LC50, zebra fish (Brachydanio rerio), 96 h: > 2,150 mg/l 

13. Disposal Considerations 

DO NOT DUMP INTO ANY SEWERS, ON THE GROUND, OR INTO ANY BODY OF WATER. All 

disposal practices must be in compliance with all Federal, State/Provincial and local laws and 

regulations. Regulations may vary in different locations. Waste characterizations and compliance with 

applicable laws are the responsibility solely of the waste generator. AS YOUR SUPPLIER, WE HAVE 

NO CONTROL OVER THE MANAGEMENT PRACTICES OR MANUFACTURING PROCESSES OF 

PARTIES HANDLING OR USING THIS MATERIAL. THE INFORMATION PRESENTED HERE 

PERTAINS ONLY TO THE PRODUCT AS SHIPPED IN ITS INTENDED CONDITION AS 

DESCRIBED IN MSDS SECTION: Composition Information. FOR UNUSED & UNCONTAMINATED 

PRODUCT, the preferred options include sending to a licensed, permitted: Recycler. Reclaimer. 

Incinerator or other thermal destruction device. For additional information, refer to: Handling & 

Storage Information, MSDS Section 7 Stability & Reactivity Information, MSDS Section 10 Regulatory 

Information, MSDS Section 15 As a service to its customers, Dow can provide names of information 

resources to help identify waste management companies and other facilities which recycle, reprocess 

or manage chemicals or plastics, and that manage used drums. Telephone Dow's Customer 

Information Group at 1-800-258-2436 or 1-989-832-1556 (U.S.), or 1-800-331-6451 (Canada) for 

further details. 

14. Transport Information 

DOT Non-Bulk

Proper Shipping Name: AEROSOLS, FLAMMABLE 

Hazard Class: 2.1 ID Number: UN1950 

 

CONSUMER COMMODITY RECLASSIFIED AS ORM-D MATERIAL 
Product Name: GREAT STUFF PRO(TM) Gaps & Cracks 24oz Gun 

HC Foam Sealant US

Issue Date: 01/08/2010

Page 11 of 12

DOT Bulk

NOT AVAILABLE IN BULK CONTAINERS 

IMDG

Proper Shipping Name: AEROSOLS, FLAMMABLE 

Hazard Class: 2.1 ID Number: UN1950 

EMS Number: F-D,S-U 

 

LIMITED QUANTITY 

ICAO/IATA

Proper Shipping Name: AEROSOLS, FLAMMABLE 

Hazard Class: 2.1 ID Number: UN1950Cargo Packing Instruction: 203 

Passenger Packing Instruction: 203 

 

LIMITED QUANTITY 

This information is not intended to convey all specific regulatory or operational 

requirements/information relating to this product. Additional transportation system information can be 

obtained through an authorized sales or customer service representative. It is the responsibility of the 

transporting organization to follow all applicable laws, regulations and rules relating to the 

transportation of the material. 

15. Regulatory Information 

OSHA Hazard Communication Standard

This product is a "Hazardous Chemical" as defined by the OSHA Hazard Communication Standard, 29 

CFR 1910.1200. 

Superfund Amendments and Reauthorization Act of 1986 Title III (Emergency Planning 

and Community Right-to-Know Act of 1986) Sections 311 and 312

Immediate (Acute) Health Hazard Yes 

Delayed (Chronic) Health Hazard Yes 

Fire Hazard Yes 

Reactive Hazard No 

Sudden Release of Pressure Hazard Yes 

Superfund Amendments and Reauthorization Act of 1986 Title III (Emergency Planning and 

Community Right-to-Know Act of 1986) Section 313

This product contains the following substances which are subject to the reporting requirements of 

Section 313 of Title III of the Superfund Amendments and Reauthorization Act of 1986 and which are 

listed in 40 CFR 372. 

Component CAS # Amount

4,4' -Methylenediphenyl diisocyanate 101-68-8 >= 7.0 - <= 13.0 %

Paraffin waxes and Hydrocarbon waxes, 

chlorinated 

63449-39-8 >= 5.0 - <= 10.0 %

Diphenylmethane Diisocyanate, isomers and 

homologues 

9016-87-9 >= 10.0 - <= 30.0 %

Pennsylvania (Worker and Community Right-To-Know Act): Pennsylvania Hazardous 

Substances List and/or Pennsylvania Environmental Hazardous Substance List:

The following product components are cited in the Pennsylvania Hazardous Substance List and/or the 

Pennsylvania Environmental Substance List, and are present at levels which require reporting. 

Component CAS # Amount

4,4' -Methylenediphenyl diisocyanate 101-68-8 >= 7.0 - <= 13.0 %

Methyl ether 115-10-6 >= 1.0 - <= 5.0 %

Propane 74-98-6 >= 1.0 - <= 5.0 %

Isobutane 75-28-5 >= 3.0 - <= 7.0 %
Product Name: GREAT STUFF PRO(TM) Gaps & Cracks 24oz Gun 

HC Foam Sealant US

Issue Date: 01/08/2010

Page 12 of 12

Pennsylvania (Worker and Community Right-To-Know Act): Pennsylvania Special Hazardous 

Substances List:

To the best of our knowledge, this product does not contain chemicals at levels which require reporting 

under this statute. 

California Proposition 65 (Safe Drinking Water and Toxic Enforcement Act of 1986)

This product contains no listed substances known to the State of California to cause cancer, birth 

defects or other reproductive harm, at levels which would require a warning under the statute. 

US. Toxic Substances Control Act

All components of this product are on the TSCA Inventory or are exempt from TSCA Inventory 

requirements under 40 CFR 720.30 

CEPA - Domestic Substances List (DSL)

All substances contained in this product are listed on the Canadian Domestic Substances List (DSL) or 

are not required to be listed. 

16. Other Information 

Recommended Uses and Restrictions

Component(s) for the manufacture of urethane polymers. We recommend that you use this product in 

a manner consistent with the listed use. If your intended use is not consistent with the stated use, 

please contact your sales or technical service representative. 

Revision 

Identification Number: 1041500 / 0000 / Issue Date 01/08/2010 / Version: 1.0 

Most recent revision(s) are noted by the bold, double bars in left-hand margin throughout this 

document. 

Legend 

N/A Not available 

W/W Weight/Weight 

OEL Occupational Exposure Limit 

STEL Short Term Exposure Limit 

TWA Time Weighted Average 

ACGIH American Conference of Governmental Industrial Hygienists, Inc. 

DOW IHG Dow Industrial Hygiene Guideline 

WEEL Workplace Environmental Exposure Level 

HAZ_DES Hazard Designation 

Action Level A value set by OSHA that is lower than the PEL which will trigger the need for 

activities such as exposure monitoring and medical surveillance if exceeded. 

The Dow Chemical Company urges each customer or recipient of this (M)SDS to study it carefully and 

consult appropriate expertise, as necessary or appropriate, to become aware of and understand the 

data contained in this (M)SDS and any hazards associated with the product. The information herein is 

provided in good faith and believed to be accurate as of the effective date shown above. However, no 

warranty, express or implied, is given. Regulatory requirements are subject to change and may differ 

between various locations. It is the buyer's/user's responsibility to ensure that his activities comply with 

all federal, state, provincial or local laws. The information presented here pertains only to the product 

as shipped. Since conditions for use of the product are not under the control of the manufacturer, it is 

the buyer's/user's duty to determine the conditions necessary for the safe use of this product. Due to 

the proliferation of sources for information such as manufacturer-specific (M)SDSs, we are not and 

cannot be responsible for (M)SDSs obtained from any source other than ourselves. If you have 

obtained an (M)SDS from another source or if you are not sure that the (M)SDS you have is current, 

please contact us for the most current version.