Product Name: SPECFLEX* NS 648 LD Polyol Issue Date: 09/14/2007 

Print Date: 18 Aug 2011

* Indicates a Trademark 

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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

SPECFLEX* NS 648 LD Polyol

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: Black 

Physical State: Liquid 

Odor: Amine. 

Hazards of product:

CAUTION! May cause eye irritation. Isolate area. Slipping hazard. 

OSHA Hazard Communication Standard

This product is not a "Hazardous Chemical" as defined by the OSHA Hazard Communication 

Standard, 29 CFR 1910.1200. 

Potential Health Effects

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

Skin Contact: Prolonged exposure not likely to cause significant skin irritation. 

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

Inhalation: At room temperature, exposure to vapor is minimal due to low volatility; single exposure is 

not likely to be hazardous. Vapor from heated material or mist may cause respiratory irritation. 

Material Safety Data Sheet

The Dow Chemical Company
Product Name: SPECFLEX* NS 648 LD Polyol Issue Date: 09/14/2007

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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. 

Component CAS # Amount 

Polyether polyol Trade secret > 90.0 %

Water 7732-18-5 <= 5.0 %

4. First-aid measures 

Eye Contact: Flush eyes thoroughly with water for several minutes. Remove contact lenses after the 

initial 1-2 minutes and continue flushing for several additional minutes. If effects occur, consult a 

physician, preferably an ophthalmologist. 

Skin Contact: Wash skin with plenty of water. 

Inhalation: Move person to fresh air; if effects occur, consult a physician. 

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

medical personnel. 

Notes to Physician: No specific antidote. Treatment of exposure should be directed at the control of 

symptoms and the clinical condition of the patient. 

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. May spread 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. Use water 

spray to cool fire exposed containers and fire affected zone until fire is out and danger of reignition has 

passed. Fight fire from protected location or safe distance. Consider the use of unmanned hose 

holders or monitor nozzles. Immediately withdraw all personnel from the area in case of rising sound 

from venting safety device or discoloration of the container. Do not use direct water stream. May 

spread fire. Move container from fire area if this is possible without hazard. Burning liquids may be 

moved by flushing with water to protect personnel and minimize property damage. 

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). If protective equipment is not available or not used, fight fire from a protected 

location or safe distance. 

Unusual Fire and Explosion Hazards: Container may rupture from gas generation in a fire situation. 

Violent steam generation or eruption may occur upon application of direct water stream to hot liquids. 

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. Carbon monoxide. Carbon dioxide. 

6. Accidental Release Measures 

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

with materials such as: Dirt. Sand. Sawdust. Collect in suitable and properly labeled containers. 

Wash the spill site with water. See Section 13, Disposal Considerations, for additional information. 

Personal Precautions: Use appropriate safety equipment. For additional information, refer to Section 

8, Exposure Controls and Personal Protection. Isolate area. Refer to Section 7, Handling, for 

3. Composition Information
Product Name: SPECFLEX* NS 648 LD Polyol Issue Date: 09/14/2007

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additional precautionary measures. Keep unnecessary and unprotected personnel from entering the 

area. Spilled material may cause a slipping hazard. 

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

groundwater. See Section 12, Ecological Information. 

7. Handling and Storage 

Handling 

General Handling: Avoid contact with eyes. Wash thoroughly after handling. This material is 

hygroscopic in nature. 

Other Precautions: Spills of these organic materials on hot fibrous insulations may lead to lowering of 

the autoignition temperatures possibly resulting in spontaneous combustion. 

Storage 

Store in a dry place. Store in the following material(s): Carbon steel. Stainless steel. Polypropylene. 

Polyethylene-lined container. Teflon. Glass-lined container. Aluminum. Plasite 3066 lined container. 

Plasite 3070 lined container. 316 stainless steel. See Section 10 for more specific information. 

Storage Period: Storage temperature: 

6 Months 15 - 25 °C 

8. Exposure Controls / Personal Protection 

Exposure Limits

None established 

Personal Protection

Eye/Face Protection: Use safety glasses. 

Skin Protection: No precautions other than clean body-covering clothing should be needed. 

Hand protection: Chemical protective gloves should not be needed when handling this 

material. Consistent with general hygienic practice for any material, skin contact should be 

minimized. 

Respiratory Protection: Respiratory protection should be worn when there is a potential to exceed 

the exposure limit requirements or guidelines. If there are no applicable exposure limit requirements 

or guidelines, wear respiratory protection when adverse effects, such as respiratory irritation or 

discomfort have been experienced, or where indicated by your risk assessment process. For most 

conditions, no respiratory protection should be needed; however, if material is heated or sprayed, use 

an approved air-purifying respirator. The following should be effective types of air-purifying 

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 local exhaust ventilation, or other engineering controls to maintain airborne levels 

below exposure limit requirements or guidelines. If there are no applicable exposure limit 

requirements or guidelines, general ventilation should be sufficient for most operations. Local exhaust 

ventilation may be necessary for some operations. 

9. Physical and Chemical Properties 

Physical State Liquid 

Color Black 

Odor Amine. 

Flash Point - Closed Cup > 100 °C (> 212 °F) Estimated 
Product Name: SPECFLEX* NS 648 LD Polyol Issue Date: 09/14/2007

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Flammable Limits In Air Lower: No test data available 

Upper: No test data available 

Autoignition Temperature No test data available

Vapor Pressure <= 1 mmHg very low 

Boiling Point (760 mmHg) > 100 °C (> 212 °F) Literature . 

Vapor Density (air = 1) >1 @ 25 °C Calculated

Specific Gravity (H2O = 1) 1.03 ASTM D891

Freezing Point No test data available

Melting Point No test data available

Solubility in Water (by 

weight)

Slightly soluble

pH Not applicable

Kinematic Viscosity 1,025 cSt @ 25 °C ASTM D4878 

10. Stability and Reactivity 

Stability/Instability 

Stable under recommended storage conditions. See Storage, Section 7. 

Conditions to Avoid: Product can oxidize at elevated temperatures. Generation of gas during 

decomposition can cause pressure in closed systems. 

Incompatible Materials: Avoid contact with oxidizing materials. Avoid contact with: Strong acids. 

Avoid unintended contact with isocyanates. The reaction of polyols and isocyanates generates heat. 

Hazardous Polymerization 

Will not occur by itself. 

Thermal Decomposition 

Decomposition products can include and are not limited to: Carbon dioxide. Alcohols. Ethers. 

Hydrocarbons. Ketones. Polymer fragments. 

11. Toxicological Information 

Acute Toxicity 

Ingestion 

Single dose oral LD50 has not been determined. 

Estimated LD50, Rat > 2,000 mg/kg

Skin Absorption 

The dermal LD50 has not been determined. 

Estimated LD50, Rabbit > 2,000 mg/kg

12. Ecological Information 

CHEMICAL FATE

Movement & Partitioning 

No bioconcentration is expected because of the relatively high molecular weight (MW greater than 

1000). 

Persistence and Degradability 

Most polyols are expected to degrade only slowly in the environment. 

ECOTOXICITY

Not expected to be acutely toxic to aquatic organisms. 
Product Name: SPECFLEX* NS 648 LD Polyol Issue Date: 09/14/2007

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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. DOW HAS 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. 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

NOT REGULATED 

DOT Bulk

NOT REGULATED 

IMDG

NOT REGULATED 

ICAO/IATA

NOT REGULATED 

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 not 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 No 

Delayed (Chronic) Health Hazard No 

Fire Hazard No 

Reactive Hazard No 

Sudden Release of Pressure Hazard No 

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

Community Right-to-Know Act of 1986) Section 313
Product Name: SPECFLEX* NS 648 LD Polyol Issue Date: 09/14/2007

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

under this statute. 

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

Substances List and/or Pennsylvania Environmental Hazardous Substance List:

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

under this statute. 

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)

This product contains one or more substances which are not listed on the Canadian Domestic 

Substances List (DSL). Contact your Dow representative for more information. 

16. Other Information 

Product Literature 

Additional information on this product may be obtained by calling your Dow Chemical Company sales 

or customer service contact. 

Recommended Uses and Restrictions

Component(s) for the manufacture of urethane polymers. Dow recommends that you use this product 

in a manner consistent with the listed use. If your intended use is not consistent with Dow's stated use, 

please contact Dow's Customer Information Group. 

Revision 

Identification Number: 1011326 / 0000 / Issue Date 09/14/2007 / Version: 2.0 

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 
Product Name: SPECFLEX* NS 648 LD Polyol Issue Date: 09/14/2007

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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.