ARS PESTICIDE PROPERTIES last update May 1995


name:CLOMAZONE                                 CASRN: 81777-89-1

molecular formula: C12H14CLNO2
molecular weight : 239.7
physical state   : L
(L=liquid; G=gas; S=solid)
reference: 9HERBH,7TH ED.,1989

_________________________________________________________________________
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):
275.4  -                                          H    9HERBH 6TH ED.,1989

Melting point(deg C):
       -

Decomposition point(deg C):
       -

Heat of vaporization(deg C):

--RATE CONSTANTS--

Hydrolysis (per day):
STABLE*                          25     4.65     M    9FMCC3
0.10*                            25     9.25     M    9FMCC3
STABLE                           25     7.0      M    9FMCC3

Photolysis (per day):
STABLE*              SOIL                        M    9FMCC3
STABLE*              WATER              5-9      M    9FMCC3

Vapor pressure (mPa):
19*                              25              H    9HERBH 6TH ED.,1989
19                               25              M    9FMCC3


Water solubility (ppm):       -temp-         -source- -reference-
1100*                                            H    9HERBH 6TH ED.,1989
                                                 M    9FMCC3

Organic solubility (ppm):

Henrys law (Pa m3/mol):
4.14E-3*                                         M    9FMCC3

Octanol/water partitioning (log Kow):
2.5*                                             M    9FMCC3

Acid dissociation (pKa):


Soil sorption:
soiltype        temp.   Kd       Koc      %om   pH    reference
                                 274*                 9FMCC3

Field Dissipation halflife(days):
value           test area        pH        source     reference
28-84                                         H       9HERBH 6TH ED.,1989
24                                            M       9FMCC3
16-36                                         M       9FMCC3

Halflife in soil:
Soiltype           aerobic      anaerobic   source    reference
SANDY LOAM          36                        M       9FMCC3
SILT LOAM           137                       M       9FMCC3
                    87*


Comments:
SELECTED KOC=274(152-562)
AEROBIC VALUE 87(36-137)