TOXAPHENE ^t0ST^ \ FACT SHEET ON A DRINKING WATER CHEMICAL CONTAMINANT GENERAL INFORMATION Synonyms: • Chlorinated Camphene; Camphechlor; Polychlorocamphene • Trade Names: Camphoclor; Phenotox; Camphofene Huileux; Chlor Chem T-590; Strobane T; Cristoxo; Phenacide; Toxakil, etc. Chemical Description: • Complex mixture of at least 177 polychlorinated C10 compounds Properties: • Waxy, amber-colored solid with a mild turpentine-like odor • Slightly water soluble • Low vapor pressure • will be removed from surface water Oy adsorbtion to suspended particles and deposition in sediment • will volatilize from surface waters and on soil • high potential for bioaccumulation, especially in fish and other aquatic organisms HEALTH EFFECTS Humans: • Case studies of toxaphene poisoning indicate that it causes diffuse stimulation of the central nervous system (CNS) resulting in salivation, restlessness, hyperexcitability, muscle tremors or spasms, convulsions, and sometimes loss of consciousness and death (due to respiratory failure) Production and Use: • Prior to 1982, when the EPA cancelled most uses of toxaphene, it was a widely used pesticide and herbicide on many fooa and non-food crops, and was also usea to eradicate undesirable fish species • Currently used as an insecticide on cattle and sheep, ana in certain crops in the Virgin Islands and Puerto Rico ENVIRONMENTAL PROFILE Occurrence: • Not expected to be a common contaminant of drinking water supplies, but has been found at low levels in surface waters (and sediment), and air in areas where toxaphene was applied Releases: • May enter the environment from industrial aischarges. agricultural runoff, atmospheric deposition, and accidental spills Environmental Fate: • Extremely persistent in ttie environment: • relatively stable under environmental conditions • will adsorb to soils (low mobility) and have a low potential for migration to ground water • will bioaegrade slowly in certain soils • may photodegraae in strong sunlight Experimental Animals: • Exposure may occur via ingestion, inhalation, or dermal contact • Short-term, high-aose studies indicate that CNS depression and stimulation, with symptoms similar to those in humans, is the primary effect • Long-term, high-aose studies revealed that liver and kidney degeneration, as well as CNS aeprivation and stimulation, were chronic effects; may have immunosuppressive effects • No fetotoxic or teratogenic effects reported • Equivocal evidence of mutagenic potential • High carcinogenic potential REGULATORY PROFILE Existing Standards: •Clean Air Act (CAA): Not regulated •Clean Water Act (CWA): Criteria established •Resource Conservation and Recovery Act (RCRA): Hazardous waste •Superfund (CERCLA): •Hazaraous substance •SARA: Toxic chemical • Federal Insecticide, Fungicide, and Rodentlclde Act (FIFRA): Registered •Toxic Subitances Control Act (TSCA): Not regulated ------- HEALTH INFORMATION ANALYTICAL METHODS Maximum Contaminant Level Goalt (MCLG): • Non-enforceable levels based solely on an evaluation of possible health risks and exposure, and taking into consideration a margin for public safety • Set at zero mg/l to protect against cancer MCLG for Toxaphene = Zero mg/L (effective July 1992) Maximum Contaminant Levels (MCL): • Legally enforceable levels for contaminants in public drinking water supplies • Based on health risks associated with the contaminants, analytical methods for their assay, and water treatment feasibility and practicality aspects • Exceedance of the MCI in drinking water may result in adverse effects which will depend upon the contaminant concentration in water, amount of water/contaminant ingested, length of exposure, and other biological parameters • Current MCL = 0.005 mg/L MCL for Toxaphene = 0.003 mg/L (effective July 1992) EPA Health Advisories (HA): • Short-term HAs: Provide acceptable concentrations of contaminants in water for up to 10 day exposures, primarily to evaluate the public health risk resulting from an accidental spill or an emergency contamination situation • Longer-term HAs: Provide guidance for persistent water contamination situations to cover a period of up to 7 years • Lifetime HAs: Derived in the same way as an MCLG Health Advisories: Short-term HA for a child s 0.04 mg/L Longer-term HA for a child = Insufficient data to calculate Longer-term HA for an adult = Insufficient data to calculate Lifetime HA = Not recommended • Microextraction and Gas 'Chromatography EPA Method 505 • Gas Chromatography with an Electron Capture Detector EPA Method 508 v / WATER TREATMENT Permanent Treatment: • Best Available Technology (BAT): • Granular Activated Carbon SHORT-TERM HAZARD ELIMINATION • If the drinking water standards are exceeaed, install BAT or use an alternative drinking water supply such as bottled water ADDITIONAL HELP • State or county health officials can indicate a certified laboratory for testing • Experts in the state Department of Environmental Protection, Natural Resources, or Agriculture may also be of help • The EPA has toll-free numPers for further information on drinking water auality, treatment technologies, for obtaining Health Advisories, and for other regulatory information • EPA Hotlines are available Monday through Friday •Safe Drinking Water 800-426-4791 •National Pesticides: 800-856-7378 •Superfund/RCRA: 800-424-9346 • For information on the Clean Water Act, call (202) 260-7301 • For information on the Toxic Substances Control Act, call (202) 554-1404 • For information on the Clean Air Act, call (919) 541-2777 ------- |