ARS PESTICIDE PROPERTIES DATABASE last updated Jan, 2002


name: BUTACHLOR                         CASRN: 23184-66-9   


SELECTED VALUES FOR MODELING PURPOSES (from Hornsby, et al., 1996)

WATER SOLUBILITY (mg/L): 23
FIELD HALF-LIFE (days): 12
SOIL ORGANIC CARBON SORPTION (Koc, mL/g): 700
VAPOR PRESSURE (mm Hg): 4.5 x 10-6


PUBLISHED AND MANUFACTURER VALUES AND SOURCES

molecular formula: C17H26CLNO2                
molecular weight: 311.9                      
physical state: L                     
(L=liquid; G=gas; S=solid)                    
reference: 9PMED7

__________________________________________________________________________
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):
156 AT 0.5 MM HG                             H      9PME10

Melting point (deg C):
<-5                                          H      9PME10
Decomposition point (deg C):
165                                          H      9PME10

Heat of vaporization (deg C):

--RATE CONSTANTS--

Hydrolysis (per day):

Photolysis (per day):

Vapor pressure (mPa):
0.6                             25           H      9PMED7

Water solubility (ppm): 
23                              24           H      9PMED7
                                                    9FACHB 1990
20*                             20           H      9ACHB2 1983

Organic solubility (ppm):
SOLUBLE IN MOST ORGANIC SOLVS.               H      9PME10

Henrys law (Pa m3/mol):
9.36E-3                         20           H      9PME10
             
Octanol/water partitioning (log Kow):

Acid dissociation (pKa):
                                                          

Soil sorption:
soiltype         temp.    Kd     Koc    %om    pH   reference
--------         -----    --     ---    ---    --   ---------
                                 427                6GERST
                                 631                6GERST
                                 794                6GERST
                                 1259               6GERST
                                 700*               W

Field dissipation halflife(days):
value              test area          pH    source  reference
-----              ---------          --    ------  ---------
11-18                                        H      9PMED9
4-8                                          H      9HERBH 6th ED 1989
12*

Halflife in soil:
soiltype           aerobic  anaerobic       source  reference
--------           -------  ---------       ------  ---------

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