ARS PESTICIDE PROPERTIES last update May 1995


name:ETHALFLURALIN                             CASRN: 55283-68-6

molecular formula: C13H14F3N3O4
molecular weight : 333.3
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):
256    -                                          H    9ACHB2

Melting point(deg C):
57      -     59                                  H     9ACHB2

Decomposition point(deg C):
       -

Heat of vaporization(deg C):

--RATE CONSTANTS--

Hydrolysis (per day):
<0.023*                          25     5-9      M     6DOWCH

Photolysis (per day):
0.049*               SOIL        25              M     6DOWCH
2.6*                 WATER       25              M     6DOWCH

Vapor pressure (mPa):
11                               25              H     9HERBH
0.11                             25              H     9ACHB2
12*                              25              M     7LILLY


Water solubility (ppm):        -temp-       -source-   -reference-
0.3*                             25              H     HERBH
                                                 H     9FACHB
                                                 M     7LILLY
                                                 H     9FACHB 1990
0.2                              25              H     9ACHB2 7TH ED.,1977

Organic solubility (ppm):
>5E+5*    ACETONE                                H     9PMED8
>5E+5*    XYLENE                                 H     9PMED8
>8.2E+4*  METHANOL                               H     9PMED8

Henrys law (Pa m3/mol):
13.0*                                            M     6DOWCH

Octanol/water partitioning (log Kow):
5.11*                                            M     6DOWCH

Acid dissociation (pKa):



Soil sorption:
soiltype     temp.   Kd     Koc    %om   pH    source  reference
                            4000                       7LILLY
SAND         25      11.9   4100   0.5   7.7     M     6DOWCH
SNDY LM      25      32.6   4000   1.4   5.7     M     6DOWCH
LOAM         25      53.0   5100   1.8   6.5     M     6DOWCH
CLAY LM      25      97.0   8400   2.0   6.9     M     6DOWCH
                            5120*

Field Dissipation halflife(days):
value           test area        pH        source     reference
60                                            M       7LILLY
23              SNDY LM(GA)                   M       6DOWCH
28              SLTY CLY LM(IL)               M       6DOWCH
51              LOAM(CA)                      M       6DOWCH
41(28-60)*

Halflife in soil:
Soiltype          aerobic      anaerobic   source     reference
SANDY LOAM         45*                        M       6DOWCH


Comments:
SOIL SORPTION KOC = 5120(4000-8400)
HYDROLYSIS: NONE IN 30 DAYS