DESCRIPTION

DrySolv--Spec 550 is the stabilizer additive for DrySolv solvent.. The stabilizer additive can be added to a dry cleaning machine in place of fresh solvent when the acid acceptance level of the solvent has been depleted by use. See the directions for Acid Acceptance in the DrySolv Acid Acceptance Kit for more information.

MATERIALS COMPATIBILITY

DrySolv--Spec 550 does not contain any constituents that DrySolv does not already contain. When added to DrySolv the solvent will remain compatible with metals and plastics as well as other materials typically cleaned in a dry cleaning machine. For a full list of compatibility recommendations, refer to the “Compatible Materials” document available for download at www.dctco.com  Any materials not listed in this document should be tested for compatibility under the conditions of use.

HEALTH & SAFETY

DrySolv--Spec 550 is a non-flammable, non-hazardous solvent mixture that is safe to use as a stabilizer additive. Dry Cleaning Technologies recommends that safe work practices are implemented whenever handling chemicals of any kind to minimize exposure levels. Please refer to the DrySolv--Spec 550 Material Safety Data Sheet available for download at www.dctco.com for more specific information on workplace exposure levels, toxicity and personal safety recommendations.

REGULATORY INFORMATION

n-Propyl Bromide, a principal component of DrySolv--Spec 550 is currently classified as 100% Volatile Organic Compound (VOC). Enviro Tech has petitioned the U.S. EPA for VOC exempt status based on low atmospheric reactivity derived from independent testing. The Environmental Protection Agency (EPA) determines that n-Propyl Bromide (n-PB) is an acceptable substitute for methyl chloroform and chlorofluorocarbon (CFC)-113 in the solvent cleaning sector of the Significant New Alternatives Policy (SNAP) program under section 612 of the Clean Air Act. n-Propyl Bromide has been shown to neither deplete the ozone layer nor contribute significantly to global warming.

PROCESS CONTROLS & MAINTENANCE

Before adding the DrySolv--Spec 550 Stabilizer Additive to DrySolv solvent, the acid acceptance level of the solvent should be determined using a DrySolv Test Kit, available from Dry Cleaning Technologies. If the solvent’s acid acceptance level is low (e.g., 0.19 weight percent sodium hydroxide or less), fresh DrySolv solvent or the stabilizer additive can be added to restore the solvent to an acid acceptance level that is equal to or greater than 0.25 weight percent sodium hydroxide (See the chart on page 2 for adding DrySolv--Spec 550 when the drops of Solution B from the test kit are determined). The DrySolv solvent should not be allowed to turn acidic. The acidic condition could become evident by a reddish brown solvent color, an acrid solvent odor, or a low pH of, for example 3 units or less.