Pesticide Properties Database Date Entered May 1999

Name: Cymoxanil                                                               CASRN: 57966-95-7

Molecular Formula: C7 HIO N4 03
Molecular Weight: 198.2
Physical State: S
(L=Liquid, G=Gas, S=Solid)
Reference: Agrochemical Handbook

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
159-160                                                                                                            M                   DuPont

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

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

Photolysis(per day):
Value                               Medium                  Temp                  pH                   Source              Reference
0.028                                Soil                          25                     6.4                      M                  DuPont
0.385                               Water                       25                     5                         M                  DuPont
3.2                                   Water                       25                     7                         M                  DuPont

Vapor Pressure(mPa):
Value                               Medium                  Temp                 pH                    Source              Reference
1.5E-1                                                             25                                               M                  DuPont

Water Solubility(ppm):
Value                            Medium                     Temp                  pH                   Source              Reference
890                               Water                           25                     5                        M                  DuPont
780                               Water                           25                     7                        M                  DuPont
Unstable                       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
3.3E-5                                                              25                      5                     M                  DuPont
3.8E-5                                                              25                      7                     M                  DuPont
Unstable                                                           25                      9                     M                  DuPont

Octanol/Water Partitioning(log Kow):
Value                               Medium                  Temp                  pH                   Source              Reference
0.59                                                               25                      5                         M                  DuPont
0.67                                                               25                      7                         M                  DuPont
Unstable                                                         25                      9                         M                  DuPont

Acid Dissociation(pKa):
Value                               Medium                  Temp                  pH                   Source              Reference
Decomposes

Soil Sorption:
Soil Type                        Temp       Kd         Koc          %OM          pH           Source              Reference
Sandy loam                      25          0.29          39            1.3              6.0              M                  DuPont
Clay loam                        25          2.86          110          4.5              7.7              M                  DuPont
Silt loam                          25          1.38          238          1.0              6.1              M                  DuPont
Silt loam                          25          0.79          105          1.3              6.1              M                  DuPont

Field Dissipation Halflife(days):
Value                 Test Area                                          pH              %OM        Source              Reference
5                         Japan                                              5.8              6.4                M                  DuPont
4                         Japan                                              6.7              1.67              M                  DuPont
0.9                     MD                                                  6.4              3.0               M                  DuPont
8.7                     CA                                                   7.8              1.5               M                  DuPont

Half-life in Soil(days):
Soil Type                  Aerobic                          Anaerobic                                Source              Reference
Sandy loam                1.5                                                                                   M                  DuPont
Sandy loam                0.9                                                                                   M                  DuPont
Sandy clay loam        1.6                                                                                   M                  DuPont
Andisol clay               1.3                                                                                   M                  DuPont
Sandy loam                0.75                                                                                 M                  DuPont

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