ARS PESTICIDE PROPERTIES DATABASE last updated May 1995

name: ISOXABEN                       CASRN: 82558-50-7   

molecular formula: C18H24N2O4                 
molecular weight: 332.4                      
physical state: S                      
(L=liquid; G=gas; S=solid)
reference: 9ACHB2 1983

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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.
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value              medium     temp.    pH  source   reference
-----              ------     -----    --  ------   ---------

Boiling point (deg C):

Melting point (deg C):
176 - 179                                    H      9PME10
Decomposition point (deg C):

Heat of vaporization (deg C):

--RATE CONSTANTS--

Hydrolysis (per day):
STABLE                                 5-9   H      9PME10

Photolysis (per day):

Vapor pressure (mPa):
0.053                           25           H      9ACHB2 1983
<0.05                                        H      9ACHB2 1983
5.5E-4*                         25           H      9PME10

Water solubility (ppm): 
1-2                             25           H      9ACHB2 1983
1                                            H      9HERBH 6th ED 1989
1.42*                           20           H      9PME10

Organic solubility (ppm):
SOLUBLE IN MANY ORGANIC SOLVS.               H      9PME10

Henrys law (Pa m3/mol):
1.29E-4                         25           H      9PME10

Octanol/water partitioning (log Kow):
0.937                           20     5.1   H      9PME10
   
Acid dissociation (pKa):
                                                          

Soil sorption:
soiltype         temp.    Kd     Koc    %om    pH   reference
--------         -----    --     ---    ---    --   ---------                                                        
                                 6730               9ACHB2 1983
                                                    CMSHAF 10: 833-846 (1981)
                                 1453               6USEPA
                                 1442               6USEPA
                                 1457               6USEPA
                                 357                6USEPA
                                 1400*              W

Field dissipation halflife(days):
value              test area          pH    source  reference
-----              ---------          --    ------  ---------
150-180                                      H      9ACHB2 1983
                                             H      9HERBH 6th ED 1989
30-40              FL                        P      6USEPA
90-120                                       H      9PME10
100*                                         W

Halflife in soil:
soiltype           aerobic  anaerobic       source  reference
--------           -------  ---------       ------  ---------

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