ARS PESTICIDE PROPERTIES last update May 1995


name:FOSAMINE AMMONIUM                         CASRN: 25954-13-6

molecular formula: C3H11N2O4P
molecular weight : 170.1
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</pre>

<pre>* 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):
175    -                                        H          9ACHB2

Decomposition point(deg C):
       

Heat of vaporization(deg C):

--RATE CONSTANTS--

Hydrolysis (per day):
STABLE                         25     5-9       M          9DUPON,1999

Photolysis (per day):
0.0085*               SOIL     25     6.8       M          9DUPON
STABLE                WATER    25     5,7,9     M          9DUPON,1999

Vapor pressure (mPa):
2.1*                           25               M          9DUPON



Water solubility (ppm):       -temp-          -source-   -reference-
1.79E+06*                      25                          9DUPON

Organic solubility (ppm):
300*       ACETONE             25                 M        9DUPON,1999
400*       BENZENE             25                 M        9DUPON,1999
1.4E03*    DIMETHYL FORMAMIDE  25                 M        9DUPON,1999
1.2E04*    ETHANOL             25                 M        9DUPON,1999
200        HEXANE              25                 M        9DUPON,1999
1.58E05*   METHANOL            25                 M        9DUPON,1999

Henrys law (Pa m3/mol):
2.0E-7                         25        7        M        9DUPON,1999

Octanol/water partitioning (log Kow):
-2.9                           25                          9DUPON

Acid dissociation (pKa):


soil sorption:
soiltype        temp.   Kd      Koc    %om    pH   source  reference
SANDY LOAM              0.22    34     1.1    6.6    M     9DUPON
SANDY LOAM              0.59    48     2.1    6.5    M     9DUPON
SANDY LOAM              2.7     108    4.3    5.4    M     9DUPON
SANDY LOAM              350     12800  4.7    4.3    M     9DUPON
                                63*

Field Dissipation halflife(days):
value             test area      pH     %OM      source    reference

                  TENNESSEE      5.2    0.5         M      9DUPON
                  DELAWARE       5.5    0.7         M      9DUPON
                  N.CAROLINA     6.5    1.0         M      9DUPON
  


Halflife in soil:
Soiltype           aerobic      anaerobic        source    reference
SANDY LOAM(DE)       7*                             M      9DUPON,1999
SILT LOAM(DE)        7                              M      9DUPON,1999
SILT LOAM(DE)        0.5                            M      9DUPON,1999
SANDY LOAM(MD)                     4                M      9DUPON,1999


Comments:
SOIL SORPTION KOC VALUE=63(34-108);
AEROBIC 7=PH6.5 @24 DEGREES C.