ARS PESTICIDE PROPERTIES last update May 1995 name:PHENMEDIPHAM CASRN: 13684-63-4 molecular formula: C16H16N2O4 molecular weight : 300.32 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): 143 - 144 H 9ACHB2 Decomposition point(deg C): - Heat of vaporization(deg C): --RATE CONSTANTS-- Hydrolysis (per day): 0.014* 25 5 M 6NORAM 1.14* 25 7 M 6NORAM 103.2* 25 9 M 6NORAM Photolysis (per day): 0.21* SOIL <30 M 6NORAM 0.07* WATER 22 M 6NORAM 2.50 AIR M 6NORAM Vapor pressure (mPa): 1.3E-06 25 H 9ACHB2 1983 ED. H 9ACHB2 M 7SCHER 1.2E-06* 25 M 6NORAM Water solubility (ppm): -temp- -source- -reference- 6.0* 20 M 6NORAM 3 RT R EESADV 5 E JAFCAU 30:1032-1035,1982 4.7 20 M 7SCHER Organic solubility (ppm): Henrys law (Pa m3/mol): 6.0E-08* 25 M 6NORAM Octanol/water partitioning (log Kow): 3.59* M 6NORAM Acid dissociation (pKa): <0.1* H 9PME10 Soil sorption: soiltype temp. Kd Koc %om pH source reference 1166 P 8EPAGR 2400 R EESADV 7500* SAND 1.4E04 M 6NORAM LOAMY SAND 6E03 M 6NORAM SANDY LOAM 1E04 M 6NORAM LOAMY SAND 1.1E04 M 6NORAM Field Dissipation halflife(days): value test area pH %OM source reference 42 H 9ACHB2 1983 ED. 25 H 9HERBH 28-45 P 8EPAGR 30-55 P 8EPAGR 16 M 7SCHER 25* M 6NORAM Halflife in soil: Soiltype aerobic anaerobic source reference 20* 120* M 6NORAM Comments: AEROBIC 20=PH6.8, ANAEROBIC 120=PH5