ARS PESTICIDE PROPERTIES last update May 1995 name:THIFENSULFURON ME CASRN: 79277-27-3molecular formula: C12H13N5O6S2 molecular weight : 387.4 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): 176 - 178 M 9DUPON,1999Decomposition point(deg C): - Heat of vaporization(deg C): --RATE CONSTANTS--Hydrolysis (per day): 0.028 25 5 M 9DUPON,1999 0.004 25 7 M 9DUPON,1999 0.044 25 9 M 9DUPON,1999Photolysis (per day): 0.044 SOIL (4.3%om) 25 5.4 M 9DUPON,1999 0.14* WATER 25 5 M 9DUPON,1999 0.131 WATER 25 7 M 9DUPON,1999 0.128 WATER 25 9 M 9DUPON,1999Vapor pressure (mPa): 1.7E-5* 25 M 9DUPON Water solubility (ppm): -temp- -pH- -source- -reference- 223 25 5 M 9DUPON,1999 2240 25 7 M 9DUPON,1999 8830 25 9 M 9DUPON,1999Organic solubility (ppm): 11900 ACETONE 25 M 9DUPON 7300 ACETONITRILE 25 M 9DUPON 900 ETHANOLE 25 M 9DUPON 2600 ETHYL ACETATE 25 M 9DUPON <100 HEXANE 25 M 9DUPON 2600 METHANOL 25 M 9DUPON 27500 METHYLENE CHLORIDE 25 M 9DUPON 200 XYLENES 25 M 9DUPONHenrys law (Pa m3/mol): pH 2.8E-8 25 5 M 9DUPON 3.0E-9 25 7 M 9DUPON 7.6E-10 25 9 M 9DUPONOctanol/water partitioning (log Kow): -pH- -1.7 25 7 M 9DUPON 0.3 25 5 M 9DUPON -3.7 25 9 M 9DUPONAcid dissociation (pKa): 4.0* M 9DUPON Soil sorption: soiltype temp. Kd Koc %om pH source reference SANDY LM(DE) 25 0.08 13 1.1 6.6 M 9DUPON SANDY LM(NC) 25 0.19 16 2.1 6.5 M 9DUPON SILT LM(IL) 25 1.38 55 4.3 5.4 M 9DUPON SILT LM(DE) 25 1.25 29 7.5 5.2 M 9DUPON 28* Field Dissipation halflife(days): value test area pH %om source reference 14 ND 7.3 5.3 M 9DUPON,1999 11(6-17)* 7-8 MADERA(CA) 7.3 1.6 M 9DUPON 12-8 SASKATOON(SASK) 6.3 2.3 M 9DUPON 11.7 CALGARY(AL) 7.9 4.1 M 9DUPON 16.5 LONDON(ONT) 7.5 3.0 M 9DUPON 6.2 KENTVILLE(NOVA 6.5 3.2 M 9DUPON SCOTIA) 20 ID 6.4 2.1 M 9DUPON,1999 3 CO 6.5 1.2 M 9DUPON,1999 6 MANITOBA 7.9 6.4 M 9DUPON,1999 Halflife in soil: Soiltype aerobic anaerobic source reference SILT LM(IL) 6 M 9DUPON,1999 SILT LM(DE) 2 5 M 9DUPON,1999 SNDY LM(GERMANY) 2 M 9DUPON,1999 SNDY LM(GERMANY) 3 M 9DUPON,1999Comments: AEROBIC: 6=pH5.4, 25 degrees C., 4.3%om 2=pH5.2, 25 degrees C., 7.5%om