ARS PESTICIDE PROPERTIES last update May 1995


name:PROPOXUR                                  CASRN: 114-26-1

molecular formula: C11H15NO3
molecular weight : 209.25
physical state   : S
(L=liquid; G=gas; S=solid)
reference: 6MILES

_________________________________________________________________________
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):
84     -     87                                  H    9PMED8,8TH ED.,P.717,1987

Decomposition point(deg C):
       -

Heat of vaporization(deg C):

--RATE CONSTANTS--

Hydrolysis (per day):
<0.002 *                         22     4        M     6MILES
0.007 *                          22     7        M     6MILES
0.555 *                          22     9        M     6MILES

Photolysis (per day):
0.009 *              SOIL        OD              M     6MILES
0.069 *              WATER       OD              M     6MILES

Vapor pressure (mPa):
1.3E+3                          120              H     9ACHB2,2ND ED.,1987
1.29 *                           20              M     6MILES


Water solubility (ppm):       -temp-          -source-     -reference-
1.74E+3                          10              E     JPFCD2,20(6):627,1985
1.93E+3                          20              E     JPFCD2,20(6):627,1985
2.44E+3                          30              E     JPFCD2,20(6):627,1985
1.86E+3                          20              E     JPFCD2,18(2):225,1983
1800 *                           20              M     6MILES
2000                             20              R     EESADV

Organic solubility (ppm):
2.1E+05 * 2-PROPANOL             20              M     6MILES
2.0E+03 * N-HEXANE               20              M     6MILES
>1.0E+6 * DICHLOROMETHANE        20              M     6MILES

Henrys law (Pa m3/mol):
1.5E-04 *                        20              M     6MILES

Octanol/water partitioning (log Kow):
1.56 *                           20              M     6MILES
1.45                             NR              R     9HRLCP(RAO&DAVIDSON),1980
1.52                             NR              R     9HRLCP;KENAGA&GORING,1980
1.55                             NR              R     9HRLCP(BOWMAN&SANS),1983

Acid dissociation (pKa):


Soil sorption:
soiltype        temp.   Kd      Koc      %om   pH     reference
                                 68                   EESADV 4:31,1980
                                 21                   9HRLCP
                                 24                   9HRLCP
                                 26                   9HRLCP
                                 28                   CMSHAF 10:833-845,1981
SILT LOAM                0.597   39**    2.9   5.9    6MILES
SANDY LOAM               0.004   0.76**  1.1   6.6    6MILES
SAND                     0.181   34**    1.0   4.3    6MILES
CLAY LOAM                0.329   28**    2.2   6.4    6MILES
                                 29*

Field Dissipation halflife(days):
value             test area        pH       source    reference
>28 *                                         P       8EPADR

Halflife in soil:
Soiltype           aerobic      anaerobic   source    reference
SILT LOAM           80            80          M       6MILES
SANDY LOAM          210           108         M       6MILES
                    145 *         94*


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 =29(1-68);