ARS PESTICIDE PROPERTIES DATABASE last updated Oct 1, 2001


name:2,4-DB DIMETHYLAMINE SALT                 CASRN: 2758-42-1


SELECTED VALUES FOR MODELING PURPOSES (from Hornsby, et al., 1996)

WATER SOLUBILITY (mg/L): 709000
FIELD HALF-LIFE (days): 10 E
SOIL ORGANIC CARBON SORPTION (Koc, mL/g): 20 E
VAPOR PRESSURE (mm Hg): 0
pKa:  4.8 {1}


PUBLISHED AND MANUFACTURER VALUES AND SOURCES

molecular formula: C12H17CL2NO3
molecular weight : 294.2
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    -   119 (parent)                         H       9PME10

Decomposition point(deg C):
       -

Heat of vaporization(deg C):

--RATE CONSTANTS--

Hydrolysis (per day):

Photolysis (per day):

Vapor pressure (mPa):
<1.3E-02*



Water solubility (ppm):       -temp-         -source-  -reference-
46PARENT*                                        R     EESADV
                                                 H     9ACHB2 1983 ED.
>2E05                                            H     9ACHB2 1983 ED.
7.09E05*                                         M     9RHPOU

Organic solubility (ppm):

Henrys law (Pa m3/mol):

Octanol/water partitioning (log Kow):

Acid dissociation (pKa):
4.8*                                             H     9ACHB2 7TH ED.,1977


Soil sorption:
soiltype        temp.   Kd      Koc      %om    pH     reference
                                20*
                                530*

Field Dissipation halflife(days):
value             test area        pH        source     reference
14*                                              H      9ACHB2 1983 ED.

Halflife in soil:
Soiltype               aerobic      anaerobic   source    reference

Comments:
VAPOR PRESSURE VALUE <1.3E02 HAS TEMP=NR; ACID DISSOC. VALUE
4.8PARENT; SOIL SORPTION VALUE 530PARENT