WOODSTOCK TECHNICAL CENTER

Recommended Personal Protective Equipment and Safe Handling Procedures 

When Using Isocyanate containing MOR-FREE® Adhesives

Caution: Several MOR-FREE®adhesives contain isocyanates which are known skin and 

respiratory sensitizers. Every effort should be made to prevent exposure by any route by means 

of engineering controls. Personal protective equipment should be considered a last resort 

approach to employee protection. Once cured, isocyanate-containing MOR-FREE adhesives 

are non-hazardous.

1. Eye Protection: Wear safety glasses during routine operations. When there is the potential of 

a splash, wear chemical splash goggles and a face shield.

2. Work Clothes: Wear long pants and long-sleeved shirts. If work clothing is contacted with 

isocyanate-containing materials, it should be changed immediately and either laundered or 

held away from potential employee contact to allow the adhesive to cure, before reuse.

3. Work Shoes: Wear steel-toe safety shoes when there is the potential of foot injury.

4. Hand Protection: Nitrile gloves are recommended for protection against isocyanatecontaining materials. Before removing contaminated gloves, water rinse them and remove 

them without touching the outer surface with unprotected fingers. Allow gloves to air dry to 

cure unreacted isocyanate, and discard contaminated gloves as non-hazardous trash. 

(www.bestglove.com, www.ansellpro.com)

5. Skin Cleaning: If skin is contacted with isocyanate-containing materials, immediately wash 

with polypropylene glycol, a polyglycol skin decontamination product, or corn oil. Then 

wash the affected area thoroughly with soap and water.

6. Respiratory Protection: If air monitoring has shown that air concentrations of isocyanates

are greater than 5 and less than 50 parts per billion parts of air (ppb), wear a full facepiece 

air-purifying respirator equipped with an organic vapor cartridge and N95 prefilter. If the 

airborne isocyanate concentration is above 50 ppb or is unknown, a positive-pressure full 

facepiece airline respirator or positive-pressure self-contained breathing apparatus (SCBA) is 

required. Ensure that respirator wearers have been fit tested. (www.3M.com/occsafety, 

www.MSAnet.com)

7. Engineering Controls: Avoid generating mists and vapors by using closed systems. When 

mists and vapors are released, control then by means of enclosures and ventilation systems.

8. Ventilation: Use local exhaust ventilation for the control of airborne isocyanates, that is 

ventilation that collects vapor and mist releases at the point of their evolution and exhausts 

then from the workplace. A capture velocity of 100 fpm is required for vapors and 150 fpm 

for mists at the point of release. Consult the latest edition of Industrial Ventilation, A Manual 

of Recommended Practice published by the American Conference of Governmental 

Industrial Hygienists for information on the design, installation, use, and maintenance of 

exhaust systems. (www.acgih.org)

9. Other: Confine long hair and do not wear loose jewelry in the workplace.

The information presented herein is based upon our own research and general experience and is believed to be accurate and reliable. However, you 

should conduct your own tests to evaluate the effectiveness of the Rohm and Haas product and our suggestion under your own conditions prior to 

commercial use. As you can appreciate, since the conditions of handling, use and testing are beyond our control, we make no guarantee of results 

and assume no liability for direct or consequential damages incurred by following these suggestions. Nothing contained herein is to be construed as a 

recommendation for use in violation of any patents or of applicable laws or regulations.

Midwest Technical Center

Rohm and Haas Co. – 2531 Technology Drive Suite 301 Elgin, IL 60123 Phone: 847-649-3500 Fax: 847-649-3701

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