ARS PESTICIDE PROPERTIES last update May 1995 name:IMAZAMETHABENZ-ME(P-ISOMER) CASRN: 81405-85-8 molecular formula: C16H20N2O3 molecular weight : 288.35 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): 113 - 153** H 9ACHB2 Decomposition point(deg C): - Heat of vaporization(deg C): --RATE CONSTANTS-- Hydrolysis (per day): Photolysis (per day): Vapor pressure (mPa):** 0.0015* M 9AMCY1 Water solubility (ppm): -temp- -source- -reference- 857* H 9ACHB2 M 9AMCY1 M 9AMCY1 Organic solubility (ppm):** 2.3E05* ACETONE 25 H 9ACHB2 2.16E05* DIMETHYL SULFIDE 25 H 9ACHB2 600* N-HEPTANE 25 H 9ACHB2 1.83E05* ISOPROPANOL 25 H 9ACHB2 3.09E05* METHANOL 25 H 9ACHB2 1.72E05* DICHLOROMETHANE 25 H 9ACHB2 4.5E04* TOLUENE 25 H 9ACHB2 Henrys law (Pa m3/mol): 5.05E-7* Octanol/water partitioning (log Kow): 1.54 H 9PME10 Acid dissociation (pKa): 2.9* 24 H 9PME10 Soil sorption: soiltype temp. Kd Koc %om pH reference 35 9AMCY1 Field Dissipation halflife(days): value test area pH source reference 30-276 H 9ACHB2 45(30-276)* M 9AMCY1 Halflife in soil: Soiltype aerobic anaerobic source reference Comments: ** VALUES FOR MIXED O,P ISOMERS