ARS PESTICIDE PROPERTIES last update May 1995


name:FENBUTATIN OXIDE                          CASRN: 13356-08-6

molecular formula: C60H78OSn2
molecular weight : 1052.7
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):
138    -    139                                  H        9ACHB2

Decomposition point(deg C):
       -

Heat of vaporization(deg C):

--RATE CONSTANTS--

Hydrolysis (per day):
<0.0069*                         25     5-9      M        9DUPON

Photolysis (per day):
0.0054* (1%OM)       SOIL        25     6.4      M        9DUPON   
0.0063*              WATER       25     7        M        9DUPON

Vapor pressure (mPa):
2.4E-6*                          25                       9DUPON


Water solubility (ppm):       -temp-          -source-    -reference-
0.0127*                         20
0.005                           23               H       9ACHB2 1983 ED.
12.7 PPB                        20               M       9DUPON

Organic solubility (ppm):

Henrys law (Pa m3/mol):
2.0E-4*                         25               M       9DUPON

Octanol/water partitioning (log Kow):
5.1*                            25               M       9DUPON

Acid dissociation (pKa):


Soil sorption:
soiltype        temp.   Kd      Koc      %om     pH      reference
SAND(CA)                6.9     3391     0.35    ND      9DUPON
SANDY LOAM(CA)          13.3    2158     1.06    7.3     9DUPON
SANDY CLY LM(IA)        30.4    2614     2.00    5.3     9DUPON
SANDY CLY LM(GA)      3587.4    4.1E05   1.50    6.4     9DUPON
                                2721*


Field Dissipation halflife(days):
value             test area        pH          source     reference
90                                                M       9DUPON
95(90-100)*                                       M       9DUPON
>100                                              M       9DUPON


Halflife in soil:
Soiltype            aerobic      anaerobic     source     reference
LOAM(CA)             >365*                        M       9DUPON
LOAM(IA)             >365                         M       9DUPON
LOAM(CA)             >365                         M       9DUPON


Comments:
SOIL SORPTION KOC=2721(2158-3391); AEROBIC >365=PH5-7 @ 25
DEGREES C.