| Chemical Abstract Number (CAS #) |
7421934
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| Synonyms | Endrin aldehyde |
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| Analytical Methods |
EPA Method 508 |
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EPA Method 608 |
EPA Method 617 |
EPA Method 625 |
EPA Method 8080A |
EPA Method 8081 |
EPA Method 8250A |
| Molecular Formula | C12H8Cl6O |
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| Use | Not commercially used but occurs as an impurity of endrin.
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| Molecular Weight | 380.89
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| 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.
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| 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.
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| 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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