Pesticide Properties Database-Update May 1999

Name : Azimsulfuron                                CASRN: 120162-55-2

Molecular Formula: C13 H16 NIO 05 S
Molecular Weight: 424.4
Physical State: S
(L=Liquid, G=Gas, S=Solid)
Reference: Pesticide Manual,11th Ed.

Key to sources: (M)anufacturer, (R)eview, (H)andbook, (E)xperiment,
                  (C)alculated, (U)nknown, (E)EPA, (W)auchope

* denotes a selected value where multiple values of a property are listed

Boiling Point(deg C):
Value                           Medium                       Temp                    pH                  Source               Reference

Melting Point(deg C):
Value                           Medium                       Temp                    pH                  Source               Reference

170                                                                                                                      H                  Pest. Manual

Decomposition(deg C):
Value                           Medium                       Temp                   pH                 Source                Reference

Hydrolysis(per day):
Value                           Medium                       Temp                     pH               Source                   Reference
0.008                           Water                             25                         5                  M                       DuPont
0.006                           Water                             25                         7                  M                       DuPont
0.005                           Water                             25                         9                  M                       DuPont

Photolysis (per day):
Value                        Medium                           Temp                    pH                Source                 Reference
0.007                       Water                                 25                         5                M                       DuPont
0.004                       Water                                 25                         7                M                       DuPont
0.003                       Water                                 25                         9                M                       DuPont

Vapor Pressure (mPa):
Value                        Medium                           Temp                     pH               Source                Reference
4.OE-6                                                              25                                             M                    DuPont

Water Solubility(ppm):
Value                        Medium                           Temp                    pH                  Source               Reference
72.3                          Water                                  20                       5                     M                     DuPont
1050                        Water                                  20                       7                     M                     DuPont
6536                        Water                                  20                       9                     M                     DuPont

Organic Solubility(ppm):
Value                        Medium                          Temp                       pH              Source                Reference
2.64E+4                    Acetone                            25                                             M                      DuPont
1.39E+4                    Acetonitrile                        25                                             M                      DuPont
1.3E+4                      Ethyl acetate                      25                                             M                      DuPont
<2E+2                       Hexane                             25                                             M                      DuPont
2.1E+3                      Methanol chloride              25                                             M                      DuPont
1.8E+3                      Toluene                              25                                             M                      DuPont

Henry's Law Constant(Pa3/mol):
Value                        Medium                          Temp                    pH                  Source                 Reference
2AE-8                                                               20                        5                     M                      DuPont
1.6E-9                                                               20                        7                     M                      DuPont         
2.6E- 10                                                            20                        9                     M                      DuPont

Octanol/Water Partitioning(log Kow):
Value                        Medium                          Temp                       pH                 Source                 Reference
0.646                                                              25                            5                     M                      DuPont
-1.37                                                               25                            7                     M                      DuPont
-2.08                                                               25                            9                     M                      DuPont

Acid Dissociation Constant(pKa):
Value                      Medium                          Temp                       pH                  Source                  Reference
3.6                                                                                                                          M                      DuPont

Soil Sorption:
Soil Type                   Temp             Kd             Koc         %OM          pH         Source                 Reference
Clay (Spain)                25              1.36             80             2.93           8.1             M                     DuPont
Silty clay(Spain            25              1.38             86             2.76           8.1             M                     DuPont
Sandy Lm(Italy)           25              0.81             61             2.3            5 .8             M                     DuPont
Silt Lm(Italy)                25              1.5               79             3.28          6.9              M                     DuPont

Field Dissipation Half-life(days):
Value                      Test Area                                         pH              %OM        Source               Reference
2-5                          Rice paddy                                     8.36                                  M                    DuPont
                               (water)                                       (paddy wtr)

Half-life in Soil:
Soil Type                  Aerobic                           Anaerobic                                 Source              Reference
Silt Lm(US)                21                                                                                     M                  DuPont
Sandy Lm(Italy)        18                                                                                       M                  DuPont
Silt Lm(Italy)             26                                                                                       M                  DuPont
Clay (Spain)             134                                                                                      M                  DuPont
Silty clay(Spain)        98                                                                                       M                  DuPont
Light clay(Japan)      33                                                                                        M                  DuPont
Light clay(Japan)      24                                                                                        M                  DuPont

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