ARS PESTICIDE PROPERTIES DATABASE last updated May 1995 name: DDT CASRN: 50-29-2 molecular formula: C14H9CL5 molecular weight: 354.5 physical state: SOLID reference: 9PME10 ************************************************************************************* Key to sources: Manufacturer, Review, Handbook,Experiment, Calculated, Unknown. * denotes a selected value where multiple values of a property are listed. value medium temp. pH source reference ----- ------ ----- -- ------ --------- Boiling point (deg C): Melting point (deg C): Decomposition point (deg C): Heat of vaporization (deg C): Hydrolysis (per day): Photolysis (per day): Vapor pressure (mPa): 0.025 20 H 9PMED9 E PSSCAG 4: 137-147 (1973) Water solubility (ppm): 0.001-0.04 20-25 R ADCSAJ 111: 55-120 (1972) 0.0017 R ESTHAG 14: 553-556 (1980) 0.003 R SCSFAD 44: 1-8 (1985) 0.0077(p,p') 20 C CMSHAF 14: 609-622 (1985) 0.0012 R PSSCBG 12: 37-44 (1981) 0.0055 E CMSHAF 14: 993-1000 (1985) E ESTHAG 20: 502-507 (1986) E 6ZWAAF 7: 169 (1984) 0.04 R RREVAH 103: 1-59 (1988) Organic solubility (ppm): Henrys law (Pa m3/mol): Octanol/water partitioning (log Kow): Acid dissociation (pKa): Soil sorption - Kd (?), Koc (?): soiltype temp. Kd Koc pH source reference -------- ----- -- --- -- ------ --------- 24000 C 6RENCT 99: 120-164 (1987) P 6USEPA 240000 E 8AOACA 23800 C ESTHAG 14: 553-556 (1980) 3890000 R RREVAH 103: 1-59 (1988) RANGE C 6GERST 19953 TO 7585776 AV.426580 Field dissipation halflife(days): value test area pH source reference ----- --------- -- ------ --------- 2-15 YRS. P 6USEPA 3800 C 6RENCT 99: 120-164 (1987) RREVAH 85: 139-147 (1983) 3837 C SCSFAD 44: 1-8 (1985) 866,1386 C 8CREAM 495,770 C 8CREAM 770,187 C 8CREAM 144,2310 C 8CREAM 630,239 C 8CREAM 4331,990 C 8CREAM 2390(o,p') C 8CREAM 1733,289 C 8CREAM 3465 C 8CREAM 110 E ESTHAG 18: 514-518 (1984) 14-15 YRS E 8BULEV 7: 348-352 (1972) Halflife in soil: soiltype aerobic anaerobic source reference -------- ------- --------- ------ --------- Comments: