SPECTRUM

Chemical Fact Sheet

Chemical Abstract Number (CAS #) 7421934
CASRN 7421-93-4
SynonymsEndrin aldehyde
Analytical Methods EPA Method 508
EPA Method 608
EPA Method 617
EPA Method 625
EPA Method 8081
EPA Method 8270
Molecular FormulaC12H8Cl6O

Link to the National Library of Medicine's Hazardous Substances
Database for more details on this compound.

Use Not commercially used but occurs as an impurity of endrin.
Molecular Weight 380.89
Environmental Impact Endrin aldehyde may be released to the environment directly during the application of the insecticide endrin since it is a minor impurity of the insecticide. In addition, endrin aldehyde is one of the various metabolites of endrin. If released to soil, endrin aldehyde is not expected to leach in most soil types based on estimated Koc values of 8500 to 45000. Additional data were not available to predict the environmental fate of endrin aldehyde in soil. If released to water, adsorption to sediments and bioconcentration appears to be important fate processes. Aquatic hydrolysis, oxidation (via peroxy radicals or singlet oxygen), or volatilization are not expected to be significant. No data are available to predict the biodegradability of endrin aldehyde. If released to the atmosphere, endrin aldehyde may exist predominantly in the adsorbed-phase. Particulates associated with endrin aldehyde will be subject to wet and dry deposition. Occupational workers involved in the manufacture, formulation and application of the insecticide endrin may be exposed to endrin aldehyde through inhalation and dermal routes since endrin aldehyde is a minor impurity of endrin.
Environmental Fate Aquatic Fate: There is no evidence to suggest that hydrolysis of endrin aldehyde will occur in aquatic systems. TERRESTRIAL FATE: Very little data are available to predict the environmental fate of endrin aldehyde in soil. Based on an estimated Koc values of 8500 to 45000, endrin aldehyde is not expected to leach in most types of soil. AQUATIC FATE: Endrin aldehyde is not expected to hydrolyze, oxidize (via peroxy radicals or singlet oxygen), or volatilize significantly from aquatic systems. Adsorption to sediments and bioconcentration appears to be important fate processes in water. No data are available to predict the biodegradability of endrin aldehyde. ATMOSPHERIC FATE: With an estimated vapor pressure of 2X10-7 mmHg at 25 degC , endrin aldehyde should exist predominantly in the adsorbed-phase in the ambient atmosphere . Particulates associated with endrin aldehyde will be subject to wet and dry deposition.
Drinking Water Impact SURFACE WATER: With respect to ambient waters, endrin aldehyde has been detected in less than 1.0% of 770 reporting stations of the USEPA STORET data base system . EFFL: With respect to industrial effluents, endrin aldehyde has been detected in 1.0% of 604 reporting stations of the USEPA STORET data base system . Endrin aldehyde has been detected at concentrations ranging from 2.2 to 58 ppb in raw wastewater originating from coal mining, aluminum forming, foundries, and metal finishing industries ; concentrations in treated wastewater from aluminum forming and the foundries industries ranged from 0.3 to 20 ppb .

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