ARS PESTICIDE PROPERTIES DATABASE last updated May 1995 name: ENDRIN CASRN: 72-20-8 molecular formula: C12H8CL6O molecular weight: 380.9 physical state: S (L=liquid; G=gas; S=solid) reference: 9ACHB2 1983 __________________________________________________________________________ Key to sources: (M)Manufacturer, (R)eview, (H)andbook,(E)xperiment, (C)alculated, (U)nknown, (P)EPA data, (W)auchope * denotes a selected value where multiple values of a property are listed. __________________________________________________________________________ value medium temp. pH source reference ----- ------ ----- -- ------ --------- Boiling point (deg C): 245 H 6MONTG Melting point (deg C): 200 H 6MONTG Decomposition point (deg C): >245 H 6MONTG Heat of vaporization (deg C): --RATE CONSTANTS-- Hydrolysis (per day): Photolysis (per day): Vapor pressure (mPa): 0.02 20 R RREVAH 103: 1-59 (1988) 0.026 25 H 9ACHB2 1983 0.093* 25 H 6MONTG Water solubility (ppm): 0.23 25 R WATRAG 14:1095-1100 (1980) 0.24* 25 H 6MONTG Organic solubility (ppm): 1.70E5 ACETONE 25 H 6MONTG 1.38E5 BENZENE 25 H 6MONTG 3.3E4 CCL4 25 H 6MONTG 7.1E4 N-HEXANE 25 H 6MONTG 1.83E5 XYLENE 25 H 6MONTG 4.37E4 N-OCTANOL 20 H 6MONTG 8.73E4 TRIOLEIN 20 H 6MONTG Henrys law (Pa m3/mol): 0.148 25 H 6MONTG Octanol/water partitioning (log Kow): 3.209-5.339 H 6MONTG Acid dissociation (pKa): Soil sorption: soiltype temp. Kd Koc %om pH reference -------- ----- -- --- --- -- --------- 9950 RREVAH 103: 1-59 (1988) 34000 ESTHAG 14: 553-556 (1980) 6300 10000* W Field dissipation halflife(days): value test area pH source reference ----- --------- -- ------ --------- 4300* R RREVAH 85: 139-147 (1983) 224 E 7BENCT 14: 9-56, 1975 Halflife in soil: soiltype aerobic anaerobic source reference -------- ------- --------- ------ --------- Comments: