ARS PESTICIDE PROPERTIES last update May 1995 name:DICOFOL CASRN: 115-32-2 molecular formula: C14H9CL5O molecular weight : 370.51 physical state : S (L=liquid; G=gas; S=solid) reference: 9ACHB2 _________________________________________________________________________ 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): - Melting point(deg C): 78.5 - 79.5 H 9ACHB2 Decomposition point(deg C): >100 - M 6ROHMH Heat of vaporization(deg C): 1.07 M 6ROHMH --RATE CONSTANTS-- Hydrolysis (per day): 0.00815* 25 5 M 6ROHMH 0.168* 25 7 M 6ROHMH 38.4* 25 9 M 6ROHMH Photolysis (per day): 0.0230* SOIL 21 7.5 M 6ROHMH 0.0185* WATER 25 M 6ROHMH Vapor pressure (mPa): 0.05* 25 M 6ROHMH 1.33 M 6ROHMH Water solubility (ppm): -temp- -source- -reference- 0.8* 20 M 6ROHMH Organic solubility (ppm): 3.6E04* METHANOL M 6ROHMH 3.0E04* HEXANE M 6ROHMH 4.0E05 ETHYLACETATE M 6ROHMH Henrys law (Pa m3/mol): 2.45E-02* 25 M 6ROHMH Octanol/water partitioning (log Kow): 4.279* 25 M 6ROHMH Acid dissociation (pKa): Soil sorption: soiltype temp. Kd Koc %om pH source reference 1.8E5 E CMSHAF 10:833-845,1981 SAND 8.38 7207 0.2 6.5 M 6ROHMH SANDY LOAM 64.6 6945 1.6 5.8 M 6ROHMH SILT LOAM 70.0 5017 2.4 7.1 M 6ROHMH CLAY LOAM 82.8 5086 2.8 7.0 M 6ROHMH 6064(5017-7207)* M 6ROHMH Field Dissipation halflife(days): value test area pH source reference 52 CA(SNDY LOAM) M 6ROHMH 45 MS(SNDY LOAM) M 6ROHMH 68 CA(LMY SAND) M 6ROHMH 62 CA(SNDY LOAM) M 6ROHMH 57(45-68)* Halflife in soil: Soiltype aerobic anaerobic source reference SILT LOAM 60.8 16* M 6ROHMH Comments: AEROBIC VALUE 203=PH7.8 ANAEROBIC VALUE 16=PH7.8