Pesticide Properties Database - Data Entered May 1999

Name: Ethametsulfuron methyl                                                           CASRN: 97780-06-8

Molecular Formula: C 15 H 18 N6 06 S
Molecular Weight: 410.4
Physical State: S
(L=Liquid, G=Gas, S=Solid)
Reference: Pesticide Manual, 11th Ed.

Key to sources: (M)anufacturer, (H)andbook, (R)eview, (E)xperiment, (C)alculated
                           (U)nknown, (E)EPA data, (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
l 94                                                                                                                                 M             DuPont

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

Hydrolysis(per day):
Value                     Medium                            Temp                     pH                             Source       Reference
0.017                     Water                               25                          5                                 M             DuPont
Stable                     Water                               25                         7                                  M             DuPont
Stable                     Water                               25                         9                                  M             DuPont

Photolysis (per day):
Value                     Medium                             Temp                     pH                            Source        Reference
0.009                     Soil                                     25                        5.6                               M            DuPont
Stable                    Water                                  25                        5,7,9                            M            DuPont

Vapor Pressure (mPa):
Value                    Medium                             Temp                     pH                            Source       Reference
7.7E-10                                                           25                                                             M             DuPont

Water Solubility (ppm):
Value                    Medium                              Temp                     pH                            Source        Reference
1.7                       Water                                    25                       5                                  M            DuPont
50                        Water                                    25                       7                                  M            DuPont
410                      Water                                    25                       9                                  M            DuPont

Organic Solubility (ppm):
Value                   Medium                               Temp                     pH                            Source        Reference

Henry's Law Constant (Pa3/mol):
Value                   Medium                               Temp                     pH                            Source        Reference
1.8E-10                                                            25                       5                                 M              DuPont
6.4E-12                                                            25                       7                                 M              DuPont
7.7E-13                                                            25                       9                                 M              DuPont

Octanol/Water Partitioning (log Kow):
Value                  Medium                               Temp                      pH                            Source        Reference
0.2                                                                   25                        5                                   M             DuPont
-0.051                                                              25                        7                                 M              DuPont

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

Soil Sorption:
Soil Type                              Temp          Kd          Koc          %OM         pH                Source         Reference
Sandy loam                             25             0.38        60             1.1              6.6                  M              DuPont
Sandy loam                             25             0.92        76             2.1              6.5                  M              DuPont
Silt loam                                  25             3.1         124            4.3              5.4                  M              DuPont
Silt loam                                  25             4.1         150            4.7              4.3                  M              DuPont
Clay loam                                25             0.60       14              7.2              7.5                  M              DuPont

Field Dissipation Half-life (days):
Value                         Test Area                                             pH             %OM             Source         Reference
16                             Alberta,Canada                                    6.2              8.4                     M              DuPont
54                             Alberta,Canada                                    6.1              6.2                     M              DuPont
42                             Sask.,Canada                                       7.8              2.7                     M              DuPont
27                             DE                                                       6.3              2.0                     M              DuPont

Half-life in Soil(days):
Soil Type                  Aerobic                        Anaerobic                                                 Source          Reference
Loam                       60                                                                                                     M               DuPont

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