ARS PESTICIDE PROPERTIES DATABASE last updated May 1995 name: DDD(TDE) CASRN: 72-54-8 molecular formula: C14H10CL4 molecular weight: 320 physical state: S (L=liquid; G=gas; S=solid) reference: 6DEGRA __________________________________________________________________________ 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): 193 H 6MONTG Melting point (deg C): 88-90, 109-112 H 6MONTG Decomposition point (deg C): Heat of vaporization (deg C): --RATE CONSTANTS-- Hydrolysis (per day): 6.78E-5 25 7 H 6MONTG Photolysis (per day): Vapor pressure (mPa): 0.14(p,p')* 30 C JAFCAU 20: 645-649 (1972) 0.62 25 H 6MONTG Water solubility (ppm): 0.05(p,p')* 25 R RREVAH 103: 1-59 (1988) 0.1(o,p') 25 R RREVAH 103: 1-59 (1988) Organic solubility (ppm): Henrys law (Pa m3/mol): 0.90(p,p') C JAFCAU 20: 645-649 (1972) R RREVAH 103: 1-59 (1988) Octanol/water partitioning (log Kow): 5.061-6.217 H 6MONTG Acid dissociation (pKa): Soil sorption: soiltype temp. Kd Koc %om pH reference -------- ----- -- --- --- -- --------- 231000(o,p') RREVAH 103: 1-59 (1988) Field dissipation halflife(days): value test area pH source reference ----- --------- -- ------ --------- 2-15.6 YRS. H 6DEGRA Halflife in soil: soiltype aerobic anaerobic source reference -------- ------- --------- ------ --------- Comments: