ARS PESTICIDE PROPERTIES DATABASE last updated May 1995

name: DIMETHIRIMOL                   CASRN: 5221-53-4    

molecular formula: C11H19N3O                  
molecular weight: 209.3                      
physical state: S                      
(L=liquid; G=gas; S=solid)
reference: 9PMED9

__________________________________________________________________________
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):
102                                          H      9PME10

Decomposition point (deg C):

Heat of vaporization (deg C):

--RATE CONSTANTS--

Hydrolysis (per day):
STABLE                                       H      9PME10

Photolysis (per day):
0.099              WATER                     H      9PME10

Vapor pressure (mPa):
1.46                            30           H      9PMED9

Water solubility (ppm): 
1200                            25           H      9PMED9
                                             H      9ACHB2 1983

Organic solubility (ppm):
1.20E6      CHLOROFORM          25           H      9PME10
3.60E5      XYLENE              25           H      9PME10
6.5E4       ETHANOL             25           H      9PME10
4.5E4       ACETONE             25           H      9PME10

Henrys law (Pa m3/mol):
2.55E-4                                      H      9PME10

Octanol/water partitioning (log Kow):
1.9                                          H      9PME10

Acid dissociation (pKa):
                                                          

Soil sorption:
soiltype         temp.    Kd     Koc    %om    pH   reference
--------         -----    --     ---    ---    --   ---------
                                 34                 9PMED9
                                 87                 6GERST
                                 151                6GERST
                                 155                6GERST
                                 174                6GERST
                                 186                6GERST
                                 219                6GERST
                                 240                6GERST
                                 309                6GERST
                                 347                6GERST
                                 90*                W                

Field dissipation halflife(days):
value              test area          pH    source  reference
-----              ---------          --    ------  ---------
120                SANDY SOIL,               H      9PMED9
                   GREENHOUSE

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

Comments: