ARS PESTICIDE PROPERTIES last update May 1995


name:SULPROFOS                                 CASRN: 35400-43-2

molecular formula: C12H19O2PS3
molecular weight : 322.45
physical state   : L
(L=liquid; G=gas; S=solid)
reference: 9MILES

_________________________________________________________________________
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):
155    -    158                                   H    9ACHB2,2ND ED.,1987

Melting point(deg C):
       -

Decomposition point(deg C):
       -

Heat of vaporization(deg C):

--RATE CONSTANTS--

Hydrolysis (per day):
<0.002*                        25     5,7,9       M    6MILES

Photolysis (per day):
0.257*               SOIL    18-29 OD             M    6MILES
2.48*                WATER   20-28 OD             M    6MILES

Vapor pressure (mPa):
8.4E-02*                        20                M    6MILES



Water solubility (ppm):       -temp-         -source- -reference-
0.31*                           20                M    6MILES

Organic solubility (ppm):
1.2E+5*    CYCLOHEXANONE        29                H    9PMED8,8TH ED.,p.759,1987
4.0E+5*    2-PROPANOL LOW       29                H    9PMED8,8TH ED.,p.759,1987
6.0E+5*    2-PROPANOL HIGH      29                H    9PMED8,8TH ED.,p.759,1987

Henrys law (Pa m3/mol):
8.7E-02*                        20                M    6MILES

Octanol/water partitioning (log Kow):
5.48*                           20                M    6MILES

Acid dissociation (pKa):


Soil sorption:
soiltype      temp.   Kd    Koc     %om   pH   source  reference
SANDY LOAM     30     204   13843** 2.8   6.6     M    6MILES
SILT LOAM      30     347   13186** 5.0   7.9     M    6MILES
SILTY CLA      30     155   58900** 0.5   6.0     M    6MILES
                            25900*


Field Dissipation halflife(days):
value             test area        pH    %OM   source  reference
14                                                C    8GLEAM
4           CA(CHUALAR) LMY SND    7.3            M    6MILES
37          CA(FRESNO) LMY SND     7.8            M    6MILES
18(4-37)*

Halflife in soil:
Soiltype           aerobic      anaerobic      source  reference
SANDY LOAM          10.6                          M    6MILES
                    143*
SANDY LOAM          275                           M    6MILES


Comments:
SOIL SORPTION KOC VALUES WITH A DOUBLE ASTERISK WERE CALCULATED
USING A CONVERSION FACTOR OF 1.9(%OM=1.9%OC) RATHER THAN 1.72.
SELECTED KOC =25900(13800-58900);