Product Name: SPECFLEX* NE 187 Isocyanate DA Issue Date: 06/02/2011 

Print Date: 24 Aug 2011

®(TM)*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* NE 187 Isocyanate DA

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: Brown 

Physical State: Liquid. 

Odor: Musty 

Hazards of product:

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

May cause eye irritation. May cause skin irritation. May cause respiratory tract 

irritation. May cause lung injury. Sprayed or heated material harmful if inhaled. May 

react with water. Elevated temperatures can cause hazardous polymerization. 

Material reacts slowly with water, releasing carbon dioxide which can cause pressure 

buildup and rupture of closed containers. Elevated temperatures accelerate this 

reaction. Toxic fumes may be released in fire situations. Isolate area. Keep upwind of 

spill. Stay out of low areas. 

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
Product Name: SPECFLEX* NE 187 Isocyanate DA Issue Date: 06/02/2011 

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Potential Health Effects

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

Skin Contact: Prolonged contact may cause skin irritation with local redness. 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: At room temperature, vapors are minimal due to low volatility. However, certain 

operations may generate vapor or mist concentrations sufficient to cause respiratory irritation and 

other adverse effects. Such operations include those in which the material is heated, sprayed or 

otherwise mechanically dispersed such as drumming, venting or pumping. 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. 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. 

Aspiration hazard: Based on physical properties, not likely to be an aspiration hazard. 

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. 

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 

Diphenylmethane Diisocyanate, isomers and homologues 9016-87-9 100.0 %

4,4' -Methylenediphenyl diisocyanate 101-68-8 >= 50.0 - <= 70.0 %

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

4. First-aid measures 

Description of first aid measures

General advice: 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. 

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. 

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. Safety shower should be located in immediate work 

area. 

3. Composition Information
Product Name: SPECFLEX* NE 187 Isocyanate DA Issue Date: 06/02/2011 

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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. Eye wash fountain should be located in immediate work area. 

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

medical personnel. 

Most important symptoms and effects, both acute and delayed

Aside from the information found under Description of first aid measures (above) and Indication of 

immediate medical attention and special treatment needed (below), no additional symptoms and 

effects are anticipated.

Indication of immediate medical attention and special treatment needed

Maintain adequate ventilation and oxygenation of the patient. May cause asthma-like (reactive 

airways) symptoms. Bronchodilators, expectorants, antitussives and corticosteroids may be of help. 

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. If you 

are sensitized to diisocyanates, consult your physician regarding working with other respiratory irritants 

or sensitizers. Treatment of exposure should be directed at the control of symptoms and the clinical 

condition of the patient. 

Excessive exposure may aggravate preexisting asthma and other respiratory disorders (e.g. 

emphysema, bronchitis, reactive airways dysfunction syndrome). 

5. Fire Fighting Measures 

Suitable extinguishing media

Water fog or fine spray. Dry chemical fire extinguishers. Carbon dioxide fire extinguishers. Foam. 

Alcohol resistant foams (ATC type) are preferred. General purpose synthetic foams (including AFFF) 

or protein foams may function, but will be less effective. 

Extinguishing Media to Avoid: Do not use direct water stream. May spread fire. 

Special hazards arising from the substance or mixture

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 cyanide. 

Carbon monoxide. Carbon dioxide. 

Unusual Fire and Explosion Hazards: Product reacts with water. Reaction may produce heat and/or 

gases. This reaction may be violent. 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. 

Dense smoke is produced when product burns. 

Advice for firefighters

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 is not recommended, but 

may be applied in large quantities as a fine spray when other extinguishing agents are not available. 

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. Immediately withdraw all personnel 

from the area in case of rising sound from venting safety device or discoloration of the container. 

Move container from fire area if this is possible without hazard. Use water spray to cool fire-exposed 

containers and fire-affected zone until fire is out. Contain fire water run-off if possible. Fire water runoff, if not contained, may cause environmental damage. Review the "Accidental Release Measures" 

and the "Ecological Information" sections of this (M)SDS. 

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, 
Product Name: SPECFLEX* NE 187 Isocyanate DA Issue Date: 06/02/2011 

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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. 

6. Accidental Release Measures 

Personal precautions, protective equipment and emergency procedures: Isolate area. Keep 

unnecessary and unprotected personnel from entering the area. Keep personnel out of low areas. 

Keep upwind of spill. Spilled material may cause a slipping hazard. Ventilate area of leak or spill. If 

available, use foam to smother or suppress. Refer to Section 7, Handling, for additional precautionary 

measures. See Section 10 for more specific information. 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. 

Methods and materials for containment and cleaning up: Contain spilled material if possible. 

Absorb with materials such as: Dirt. Vermiculite. Sand. Clay. 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. Contact Dow for clean-up assistance. See Section 13, Disposal Considerations, for 

additional information. 

7. Handling and Storage 

Handling 

General Handling: Avoid breathing vapor. Avoid contact with eyes, skin, and clothing. Avoid 

prolonged or repeated contact with skin. Use with adequate ventilation. Wash thoroughly after 

handling. Keep container tightly closed. See Section 8, EXPOSURE CONTROLS AND PERSONAL 

PROTECTION. 

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. Protect from atmospheric moisture. Do not store product contaminated with 

water to prevent potential hazardous reaction. See Section 10 for more specific information. 

Additional storage and handling information on this product may be obtained by calling your sales or 

customer service contact. 

Storage Period: Storage temperature: 

6 Months 24 - 41 °C 

8. Exposure Controls / Personal Protection 

Exposure Limits

Component List Type Value |

4,4' -Methylenediphenyl 

diisocyanate

ACGIH TWA 0.005 ppm 
Product Name: SPECFLEX* NE 187 Isocyanate DA Issue Date: 06/02/2011 

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OSHA Table 

Z-1

Ceiling 0.2 mg/m3 0.02 ppm 

|

Diphenylmethane 

Diisocyanate, isomers and 

homologues

ACGIH TWA 0.005 ppm 

OSHA Table 

Z-1

Ceiling 0.2 mg/m3 0.02 ppm 

Personal Protection

Eye/Face Protection: Use chemical goggles. Eye wash fountain should be located in immediate work 

area. 

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. Polyethylene. Chlorinated polyethylene. Ethyl 

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

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

"NBR"). 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. 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 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. 

9. Physical and Chemical Properties 

Appearance

 Physical State Liquid. 

 Color Brown 

Odor Musty 

Odor Threshold 0.4 ppm Literature Odor is inadequate warning of excessive exposure.

pH Not applicable

Melting Point No test data available

Freezing Point forms crystals below 10oC

Boiling Point (760 mmHg) > 300 °C (> 572 °F) EC Method A2 decomposes prior to boiling. 

Flash Point - Closed Cup > 204 °C (> 399 °F) Literature 

Evaporation Rate (Butyl 

Acetate = 1)

No test data available

Flammability (solid, gas) Not applicable to liquids 

Flammable Limits In Air Lower: No test data available 

Upper: No test data available 
Product Name: SPECFLEX* NE 187 Isocyanate DA Issue Date: 06/02/2011 

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Vapor Pressure < 0.00001 mmHg @ 25 °C 

Vapor Density (air = 1) 8.5 Literature

Specific Gravity (H2O = 1) 1.22 - 1.24 25 °C/25 °C Literature 

Solubility in water (by 

weight)

insoluble, reacts, evolution of CO2

Partition coefficient, noctanol/water (log Pow)

Reacts with water.

Autoignition Temperature > 600 °C (> 1,112 °F) Literature

Decomposition 

Temperature

> 230 °C(> 446 °F) Literature

Dynamic Viscosity 150 - 250 mPa.s @ 25 °C Literature 

Kinematic Viscosity No test data available

Explosive properties Not explosive 

Oxidizing properties No 

10. Stability and Reactivity 

Reactivity

No dangerous reaction known under conditions of normal use.

Chemical stability

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

Possibility of hazardous reactions

Can occur. Elevated temperatures can cause hazardous polymerization. Polymerization can be 

catalyzed by: Strong bases. Water. 

Conditions to Avoid: Exposure to elevated temperatures can cause product to decompose. 

Generation of gas during decomposition can cause pressure in closed systems. Pressure build-up 

can be rapid. Avoid moisture. Material reacts slowly with water, releasing carbon dioxide which can 

cause pressure buildup and rupture of closed containers. Elevated temperatures accelerate this 

reaction. 

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

Metal compounds. Moist air. Strong oxidizers. Diisocyanates react with many materials and the rate 

of reaction increases with temperature as well as increased contact; these reactions can become 

violent. Contact is increased by stirring or if the other material mixes with the diisocyanate. 

Diisocyanates are not soluble in water and 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. Avoid contact with metals such as: Aluminum. Zinc. Brass. Tin. Copper. 

Galvanized metals. Avoid contact with absorbent materials such as: Moist organic absorbents. Avoid 

unintended contact with polyols. The reaction of polyols and isocyanates generate heat. 

Hazardous decomposition products

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

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

Dermal 

The dermal LD50 has not been determined. Estimated. LD50, Rabbit > 2,000 mg/kg

Inhalation 

As product: The LC50 has not been determined. 
Product Name: SPECFLEX* NE 187 Isocyanate DA Issue Date: 06/02/2011 

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Eye damage/eye irritation

May cause moderate eye irritation. May cause slight temporary corneal injury. 

Skin corrosion/irritation

Prolonged contact may cause skin irritation with local redness. May stain skin. 

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. 

Chronic Toxicity and Carcinogenicity 

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 specific, relevant data available for assessment. 

Genetic Toxicology 

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 

Toxicity

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). 

Fish Acute & Prolonged Toxicity 

Based on information for a similar material: LC50, Danio rerio (zebra fish), static, 96 h: > 1,000 mg/l

Aquatic Invertebrate Acute Toxicity 

Based on information for a similar material: EC50, water flea Daphnia magna, static, 24 h: > 1,000 

mg/l

Aquatic Plant Toxicity 

Based on information for a similar material: NOEC, Scenedesmus subspicatus (new name: 

Desmodesmus subspicatus), static, Growth rate inhibition, 72 h: 1,640 mg/l

Toxicity to Micro-organisms 

Based on information for a similar material: EC50; activated sludge, static, 3 h: > 100 mg/l

Toxicity to Soil Dwelling Organisms 

EC50, Earthworm Eisenia foetida, adult, 14 d: > 1,000 mg/kg

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. 

OECD Biodegradation Tests: Based on information for a similar material: 
Product Name: SPECFLEX* NE 187 Isocyanate DA Issue Date: 06/02/2011 

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Biodegradation Exposure Time Method 10 Day Window

0 % 28 d OECD 302C Test Not applicable

Bioaccumulative potential 

Bioaccumulation: In the aquatic and terrestrial environment, movement is expected to be limited by 

its reaction with water forming predominantly insoluble polyureas. 

Mobility in soil 

Mobility in soil: No data available for assessment due to technical difficulties with testing. 

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 

14. Transport Information 

DOT Non-Bulk

NOT REGULATED 

DOT Bulk

Proper Shipping Name: ENVIRONMENTALLY HAZARDOUS SUBSTANCES, LIQUID, N.O.S 

Technical Name: MDI 

Hazard Class: 9 ID Number: UN3082 Packing Group: PG III 

IMDG

NOT REGULATED 

ICAO/IATA

NOT REGULATED 

Additional Information

Reportable quantity: 6,250 lb – MDI 

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. 
Product Name: SPECFLEX* NE 187 Isocyanate DA Issue Date: 06/02/2011 

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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 No 

Reactive Hazard Yes 

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

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

Diphenylmethane Diisocyanate, isomers and 

homologues 

9016-87-9 100.0%

4,4' -Methylenediphenyl diisocyanate 101-68-8 >= 50.0 - <= 70.0 %

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 >= 50.0 - <= 70.0 %

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 

Product Literature 

Additional information on this product may be obtained by calling your sales or customer service 

contact. 

Recommended Uses and Restrictions
Product Name: SPECFLEX* NE 187 Isocyanate DA Issue Date: 06/02/2011 

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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: 57291 / 0000 / Issue Date 06/02/2011 / Version: 4.0 

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.