ARS PESTICIDE PROPERTIES last update May 1995 name:PIPERALIN CASRN: 3478-94-2 molecular formula: C5H9CL2NO2 molecular weight : 330.25 physical state : L (L=liquid; G=gas; S=solid) reference: 9FACHB 1990 _________________________________________________________________________ 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): 156 - 157 20mmHg H 9FACHB 1990 Melting point(deg C): - Decomposition point(deg C): - Heat of vaporization(deg C): --RATE CONSTANTS-- Hydrolysis (per day): 0.00097* 25 5 M 6DOWCH 0.0423* 25 7 M 6DOWCH 3.46* 25 9 M 6DOWCH Photolysis (per day): 0.02* SOIL 23 M 6DOWCH <0.023* WATER 25 M 6DOWCH Vapor pressure (mPa): <.013* 25 M 7LILLY Water solubility (ppm): -temp- -source- -reference- 20* M 7LILLY Organic solubility (ppm): Henrys law (Pa m3/mol): <0.00215* Octanol/water partitioning (log Kow): 4.31* 21 5,7,9 H 9PME10 Acid dissociation (pKa): 8.9* M 6DOWCH Soil sorption: soiltype temp. Kd Koc %om pH source reference 5000 M 7LILLY 19300* SAND 25 27.6 9600 0.5 7.7 M 6DOWCH SANDY LOAM 25 62.3 7700 1.4 5.7 M 6DOWCH LOAM 25 305 29300 1.8 6.5 M 6DOWCH CLAY LOAM 25 520 45000 2.0 6.9 M 6DOWCH Field Dissipation halflife(days): value test area pH source reference 30* H 9FACHB 1990 Halflife in soil: Soiltype aerobic anaerobic source reference SANDY LOAM 98* M 6DOWCH Comments: PHOTOLYSIS: NONE THROUGH 30 DAYS IN WATER