ARS PESTICIDE PROPERTIES last update May 1995


name:NAPROPAMIDE                               CASRN: 15299-99-7

molecular formula: C17H21NO2
molecular weight : 271.3
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):
       -

Melting point(deg C):
74.8   -   75.5                                  H     9ACHB2

Decomposition point(deg C):
       -

Heat of vaporization(deg C):


--RATE CONSTANTS--
Hydrolysis (per day):
STABLE*                          RT              M     8ICIAG

Photolysis (per day):
147*                 SOIL        25        7     M     8ICIAG

Vapor pressure (mPa):
0.27                             20              H     9ACHB2 1983 ED.
0.53                             25              H     9ACHB2
13                               50              H     9HERBH
0.023*                           25              M     8ICIAG


Water solubility (ppm):       -temp-        -source-   -reference-
70                               20             H      9ACHB2 1983 ED.
73                               20             C      EESADV
74*                              25             M      8ICIAG

Organic solubility (ppm):
~6E04*    KEROSENE               20             H      9PMED8
~5E05*    XYLENE                 20             H      9PMED8
MISCIBLE* ACETONE,ETHANOL        20             H      9PMED8
MISCIBLE* 4-METHYLPENTAN-2-ONE   20             H      9PMED8

Henrys law (Pa m3/mol):
8.4E-05*                         25             M      8ICIAG 

Octanol/water partitioning (log Kow):
3.3*                             25             M      8ICIAG 

Acid dissociation (pKa):


Soil sorption:
soiltype        temp.   Kd      Koc      %om   pH     reference
                                 300                  JEVQAA 16:422-428,1987
                                                      SCSFAD 44:1-8,1985
                                 680                  EESADV
                                 410                  EESADV
                                 218                  8ICIAG
                                 700                  8ICIAG
                                 462*

Field Dissipation halflife(days):
value             test area        pH        source   reference
56                                             H      9HERBH
                                               H      9ACHB2 1983 ED.
70                                             E      SCSFAD 44:1-8,1985
17                                             M      8ICIAG
48(17-70)*

Halflife in soil:
Soiltype            aerobic      anaerobic   source   reference


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