ARS PESTICIDE PROPERTIES last update May 1995


name:NAPTALAM SODIUM SALT                      CASRN: 132-67-2

molecular formula: C18H12NNAO3
molecular weight : 291.29
physical state   : S
(L=liquid; G=gas; S=solid)
reference:

_________________________________________________________________________
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):
185    -   (parent)                               H     9ACHB2

Decomposition point(deg C):
       -

Heat of vaporization(deg C):

--RATE CONSTANTS--

Hydrolysis (per day):
9.7E-02*                         25     5        M     6UNIRO
7.9E-04*                         25     7        M     6UNIRO
NEGLIG.*                         25     9        M     6UNIRO

Photolysis (per day):
0.012*               SOIL        25              M     6UNIRO
0.067*               WATER       25        7     M     6UNIRO

Vapor pressure (mPa):
<0.133* (parent)                 20              M     6UNIRO


Water solubility (ppm):     -temp-          -source-  -reference-
2.31E05*                      25                 H     9HERBH
200* (parent)                 20                 H     9ACHB2 1983 ED.

Organic solubility (ppm):
INSOLUBLE MOST ORGANIC SOLV.                     H     9PMED8

Henrys law (Pa m3/mol):
NEGLIGIBLE                                       H     9PMED8

Octanol/water partitioning (log Kow):
1.063*                                           M     6UNIRO

Acid dissociation (pKa):
4.0                                              C     8CREAM     
4.614* (parent)                                  M     6UNIRO


Soil sorption:
soiltype      temp.  Kd       Koc   %om   pH   source  reference
CLAY           25    2629.34  1054  4.8   5.9    M     6UNIRO
SAND           25    268.32   1594  0.9   6.5    M     6UNIRO
LOAM           25    2614.93  2152  1.2   7.6    M     6UNIRO
SANDY LOAM     25    2611.74  4039  0.5   6.5    M     6UNIRO
                              2212*
Field Dissipation halflife(days):
value         test area        pH   %OM        source  reference
20(15-24)*                                       M     6UNIRO

Halflife in soil:
Soiltype              aerobic      anaerobic   source  reference
                      245.8*        36.7*        M     6UNIRO
Comments: