Section 1 - Chemical Product and Company Identification

Product/Chemical Name: Plasti-Paste (formerly Formula 68-104) Part A           Date Prepared: 12/17/98

General Use: Polyurethane Elastomer

From: Eager Plastics, Inc., 3350 W. 48th Place Chicago, IL 60632 Phone (773)927-3484, FAX (773)650-5853

Emergency Contact: 773-807-4314

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Section 2 - Composition / Information on Ingredients



CAS Number


Exposure Limits


Weight Percent


Polymethylene polyphenylisocyanate


None Established

None Established


4, 4 Methylene bis(phenylisocyanate)


0.005 ppm

0.02 ppm


Section 3 - Hazards Identification






Potential Health Effects

Primary Entry Routes: Inhalation and Dermal

Target Organs: Lungs skin

Acute Effects Inhalation: Vapors are minimal due to low vapor pressure; if sprayed as an aerosol excessive

concentrations are attainable that could be hazardous on single exposure. Excessive exposure can cause irritation to respiratory tract and irritation of the eyes. Effects may be delayed. Decreased ventilatory capacity has been associated with exposure to similar isocyanates.

Eye: May cause irritation, redness, tearing, and blur vision. Prolonged vapor contact may cause conjunctivitis.

Skin: Contact will cause irritation, reddening, swelling, rash, scaling or blistering. Prolonged or repeated contact can cause moderate dermatitis.

Ingestion: May have corrosive effects on the linings of the mouth and stomach: symptoms can include sore throat, abdominal pain, nausea, vomiting and diarrhea.

Carcinogenicity: IARC, NTP, and OSHA do not list any components of this product as a carcinogen.

Medical Conditions Aggravated by Long-Term Exposure: skin allergies and respiratory disorders


Section 4 - First Aid Measures

Inhalation: Remove source(s) of contamination and move victim to fresh air. If breathing has stopped, give artificial respiration, then oxygen if needed. Contact physician immediately.

Eye Contact: Flush eyes with plenty of water. If irritation persists, seek medical attention.

Skin Contact: In case of skin contact, wash thoroughly with soap and water; remove contaminated clothing and launder before reuse; seek medical attention if rash develops.

Ingestion: Do not induce vomiting unless instructed by a physician. Contact physician immediately

After first aid, get appropriate in-plant, paramedic, or community medical support.


Section 5 - Fire-Fighting Measures


Flash Point: 390F (200) LEL: Not Established UEL: Not Established

Flash Point Method: COC

Flammability Classification: Non-Flammable

Extinguishing Media: Water Fog, Dry Chemical, and Carbon Dioxide Foam

Unusual Fire or Explosion Hazards: Hazardous decomposition products may be formed. Avoid water contamination in closed containers or confined areas as exothermic heat and carbon dioxide can evolve.

Fire-Fighting Instructions: Fire fighters should wear self-contained breathing apparatus. Do not release runoff from fire control methods to sewers or waterways.

Fire-Fighting Equipment: Because fire may produce toxic thermal decomposition products, wear a self-contained breathing

apparatus (SCBA) with a full face piece operated in pressure-demand or positive-pressure mode.

Section 6 - Accidental Release Measures

Spill /Leak Procedures: Only properly protected personnel should remain in the spill area; dike and contain spill; absorb or scrape up excess into suitable container for disposal; wash area with dilute ammonia solution. Stop or reduce discharge if it can be done safely.

Regulatory Requirements: Follow applicable OSHA regulations (29 CFR 1910.120).


Section 7 - Handling and Storage

Handling Precautions: Minimize breathing of vapors and avoid prolonged or repeated contact with skin. Wear proper protective equipment. If ventilation is not sufficient, wear proper respiratory equipment. Avoid moisture contamination. Reseal partial containers. Use good general housekeeping procedures.

Storage Requirements: Store in cool dry, well-ventilated area.


Section 8 - Exposure Controls / Personal Protection

Engineering Controls:

Ventilation: Provide general or local exhaust ventilation systems to maintain airborne concentrations below OSHA PELs (Sec. 2). Local exhaust ventilation is preferred because it prevents contaminant dispersion into the work area by controlling it at its source.

Administrative Controls:

Respiratory Protection: Seek professional advice prior to respirator selection and use. Follow OSHA respirator regulations (29 CFR 1910.134) and, if necessary, wear an MSHA/NIOSH-approved respirator. Select respirator based on its suitability to provide adequate worker protection for given working conditions, level of airborne contamination, and presence of sufficient oxygen. For emergency or nonroutine operations (cleaning spills, reactor vessels, or storage tanks), wear an SCBA. Warning! Air-purifying respirators do not protect workers in oxygen-deficient atmospheres. If respirators are used, OSHA requires a written respiratory protection program that includes at least: medical certification, training, fit testing, periodic environmental monitoring, maintenance, inspection, cleaning, and convenient, sanitary storage areas.

Protective Clothing/Equipment: Wear chemically protective gloves, boots, and aprons to prevent prolonged or repeated skin contact. Wear protective eyeglasses or chemical safety goggles, per OSHA eye- and face-protection regulations (29 CFR 1910.133). Contact lenses are not eye protective devices. Appropriate eye protection must be worn instead of, or in conjunction with contact lenses.

Comments: Never eat, drink, or smoke in work areas. Practice good personal hygiene after using this material, especially before eating, drinking, smoking, using the toilet, or applying cosmetics


Section 9 - Physical and Chemical Properties

Physical State: Liquid

Appearance : Brown liquid

Odor : Characteristic odor

Vapor Pressure: <0.00001 @ 25C

Vapor Density (Air=1): 8.6

Specific Gravity (H2O=1, at 4 C): 1.16

Water Solubility: Negligible:

Boiling Point: None Determined

% Volatile: Nil

Freezing/Melting Point: None Determined

Viscosity: 3 poise

Evaporation Rate: Not Applicable

Section 10 - Stability and Reactivity

Stability: This product is stable at room temperature in closed containers under normal storage and handling conditions.

Polymerization: Hazardous polymerization can occur.

Chemical Incompatibilities: Strong bases, water, amines, alcohols.

Conditions to Avoid: Avoid contamination with water and other materials that react with Isocyanates.

Hazardous Decomposition Products: MDI vapors, hydrogen cyanide gas, oxides of nitrogen, carbon monoxide and carbon dioxide


Section 11- Toxicological Information

Eye Effects: Irritation

Skin Effects: Irritation

Mutagenicity: None Determined

Teratogenicity: None Determined

Section 12 - Ecological Information

None Established


Section 13 - Disposal Considerations

Disposal: This material must be disposed of in accordance with applicable Federal, state and local regulations.


Section 14 - Transport Information





Not Classified


Not Classified

Not Classified


Section 15 - Regulatory Information

EPA Regulations:


RCRA Hazardous Waste Number: Not listed (40 CFR 261.33)

CERCLA Hazardous Substance (40 CFR 302.4) listed specific per RCRA, Sec. 3001; CWA, Sec. 311 (b)(4); CWA, Sec. 307(a), CAA, Sec. 112: None

SARA Toxic Chemical (40 CFR 372.65): None

This product contains the following chemicals that are subject to release reporting requirements under section 313 of


Chemical Name CAS # % by Weight

4, 4 Methylene bis(phenylisocyanate) 101-68-8 35.0 Max

SARA EHS (Extremely Hazardous Substance) (40 CFR 355): None

TSCA Inventory Status (40 CFR710): All components of this formulation are listed in the TSCA Inventory.


State Regulations:


California Proposition 65: This product does not intentionally contain any chemicals, which have been identified by the state of California to cause cancer, birth defects or other reproductive harm.

Massachusetts Right To Know, Substance List:

Special Hazardous Substances (>0.01%)

Chemical Name CAS # % by Weight


Hazardous Substances (>1.00%)

Chemical Name CAS # % by Weight

4, 4 Methylene bis(phenylisocyanate) 101-68-8 35.0 Max

Pennsylvania Right To Know, Substance List:

Special Hazardous Substances (>0.01%)

Chemical Name CAS # % by Weight


Hazardous Substances (>1.00%)

Chemical Name CAS # % by Weight

4, 4 Methylene bis(phenylisocyanate) 101-68-8 35.0 Max


16 - Other Information

Prepared By: Dominick J. Finocchio

Title: Technical Director


Disclaimer: The information contained in this MSDS is considered accurate as of the version date. However, no warranty is expressed or implied regarding the accuracy of the data. Since the use of this product is not within the control of Smooth-On Inc., it is the user's obligation to determine the suitability of the product for its intended application and assumes all risk and liability for its safe use.