ARS PESTICIDE PROPERTIES last update May 1995


name:DICHLORPROP                               CASRN: 120-36-5

molecular formula: C9H8CL2O3
molecular weight : 235.1
physical state   : S
(L=liquid; G=gas; S=solid)
reference: 9ACHB2

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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.
_________________________________________________________________________

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


Boiling point(deg C):
       -

Melting point(deg C):
117.5  -  118.1                                  H     9ACHB2

Decomposition point(deg C):
       -

Heat of vaporization(deg C):

--RATE CONSTANTS--

Hydrolysis (per day):
STABLE*                          25     5-9      M     9RHPOU

Photolysis (per day):

Vapor pressure (mPa):
<0.013 *                         20
<1.3E-2                          20              H     9ACHB2 1983 ED.
0.4                              20              H     9ACHB2


Water solubility (ppm):       -temp-         -source  -reference-
710                              28              H     9HERBH
350*                             20              R     EESADV
                                                 H     9ACHB2 1983 ED.
                                                 H     9ACHB2

Organic solubility (ppm):
5.95E+5*  ACETONE                20              H     9PMED8
8.5E+4*   BENZENE                20              H     9PMED8
5.1E+5*   ISOPROPANOL            20              H     9PMED8
2.1E+3*   KEROSENE               20              H     9PMED8
6.9E+4*   TOLUENE                20              H     9PMED8
5.1E+4*   XYLENE                 20              H     9PMED8

Henrys law (Pa m3/mol):
8.8E-6*                          20              M     9RHPOU

Octanol/water partitioning (log Kow):
3.0                                              M    9RHPOU

Acid dissociation (pKa):
2.86*                                            E    JAFCAU 26:289-292,1978


Soil sorption:
soiltype        temp.   Kd      Koc      %om   pH     reference
                                 170*                 EESADV

Field Dissipation halflife(days):
value             test area        pH         source  reference
8-12                                             C    8CREAM
10*                                              R    RREVAH 80:65-135,1981

Halflife in soil:
Soiltype               aerobic    anaerobic   source  reference

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