Document Page: First | Prev | Next | All | Image | This Release | Search

        presented for an individual chemical may not be applicable when that chemical
        is present in a mixture,  as the ability of a chemical in a mixture to
        permeate a material may differ from that of the pure chemical.   Further
        studies are needed to evaluate the characteristics of mixtures of chemicals
        in relation to materials for personal protective equipment.

              The chemical profiles give general information on the chemical
        resistance of various suit materials to provide a basis for a decision on
        whether suit materials are adequate.   This information is available for about
        half of the chemicals on the list of extremely hazardous substances.   The
        chemical resistance information for each suit material is indicated on the
        profiles by the entries shown below.   Explanations of their meanings follow
        the entries.

              I    Excellent Resistance/Many Data       there is quantitative

                   excellent chemical resistance to the substance.

              *    Good Resistance/Limited Data means there is quantitative
                   information indicating that the material demonstrates good
                   chemical resistance to the substance.

                   Poor Resistance/Many Data means there is quantitative
                   information indicating that the material demonstrates poor
                   chemical resistance to the substance.

   )          *    Poor Resistance/Limited Data means there is quantitative
                   information indicating that the material demonstrates poor
                   chem-cal rasistance to the substance.

              *    Good Resistance/Limited Data* means there is qualitative
                   information indicating that the material demonstrates good
                   chemical resistance to the substance.  Most of this
                   information is based on qualitative ratings from glove
                   material manufacturers and may or may not be based on actual
                   testing.  This entry on the profile is intended to provide
                   general guidance in selecting chemical protective clothing.

              *    Poor Resistance/Limited Data* means there is qualitative
                   information indicating that the material demonstrates poor
                   chemical resistance to the substance.  Most of this
                   information is based on qualitative ratings from glove
                   material manufacturers and may or may not be based on actual

                   testing.  This entry on the profile is intended to provide
                   general guidance in selecting chemical protective clothing.

              *    Good Resistance/Limited Data** means there is qualitative or
                   quantitative information indicating that the material
                   demonstrates good chemical resistance based on the generic
                   family of chemicals to which the substance belongs.  Most of
                   this information is not based on testing done on the substance
                   itself.  This entry on the profile is intended to provide
                   general guidance to the initial selection of chemical
1-                 protective clothing and to narrow the scope of alternative
                   materials.

Document Page: First | Prev | Next | All | Image | This Release | Search