ARS PESTICIDE PROPERTIES last update May 1995 name:PRIMISULFURON-METHYL CASRN: 86209-51-0 molecular formula: C15H12O7F4N4S molecular weight : 468.3 physical state : S (L=liquid; G=gas; S=solid) reference: 9CIBAG _________________________________________________________________________ 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): 170 - H 9PME10 Decomposition point(deg C): 170 - H 9PME10 Heat of vaporization(deg C): --RATE CONSTANTS-- Hydrolysis (per day): 0.026* 25 5 M 9CIBAG STABLE* 25 7-9 M 9CIBAG Photolysis (per day): 0.0315 WATER 25 5 M 9CIBAG 0.00537 WATER 25 5 M 9CIBAG 0.00856 WATER 25 7 M 9CIBAG STABLE* WATER 25 9 M 9CIBAG 0.029 SOIL 23 M 9CIBAG Vapor pressure (mPa): <5E-3* 25 H 9PME10 Water solubility (ppm): -temp- -source- -reference- 3.3 25 5 H 9PME10 243* 25 7 H 9PME10 5280 25 9 H 9PME10 23-70 25 M 9CIBAG Organic solubility (ppm): 3.4E4 ACETONE 25 H 9PME10 1000 ETHANOL 25 H 9PME10 570 TOLUENE 25 H 9PME10 7.7 N-OCTONOL 25 H 9PME10 M 9CIBAG Henrys law (Pa m3/mol): <9.6E-6 25 7 M 9CIBAG H 9PME10 Octanol/water partitioning (log Kow): 0.06 25 H 9PME10 Acid dissociation (pKa): 3.3 H 9PME10 Soil sorption: soiltype temp. Kd Koc %om pH reference CLAY 0.38 13 4.8 9CIBAG SAND 0.00 0.00 0.9 9CIBAG SANDY LOAM 0.04 4 1.9 9CIBAG LOAM 0.09 20 0.8 9CIBAG 12* Field Dissipation halflife(days): value test area pH source reference 12.6 NY BARE SNDY LOAM M 9CIBAG 13 MS BARE CLAY LOAM M 9CIBAG 6.6 MO BARE SNDY LOAM M 9CIBAG 11.8 MO CROP SNDY LOAM M 9CIBAG 3.8 GA BARE LMY SAND M 9CIBAG 5.1 GA CROP LMY SAND M 9CIBAG 11 WI BARE LMY SAND M 9CIBAG 14 WI CROP LMY SAND M 9CIBAG 10(3.8-14)* Halflife in soil: Soiltype aerobic anaerobic source reference SANDY LOAM 30* 41* M 9CIBAG SANDY LOAM 63 89 M 9CIBAG Comments: