ARS PESTICIDE PROPERTIES DATABASE last updated May 1995

name: DDE                            CASRN: 3424-82-6(o,p')
                                              72-55-9(p,p')
molecular formula: C14H8CL4                         
molecular weight: 318                                    
physical state: S                      
(L=liquid; G=gas; S=solid)
reference: 6DEGRA

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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.
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value              medium     temp.    pH  source   reference
-----              ------     -----    --  ------   ---------

Boiling point (deg C):

Melting point (deg C):
88-90(p,p')                                  H      6MONTG

Decomposition point (deg C):

Heat of vaporization (deg C):

--RATE CONSTANTS--

Hydrolysis (per day):

Photolysis (per day):
0.080(p,p')                                  H      6MONTG

Vapor pressure (mPa):
0.86(p,p')                                   E      JAFCAU 18: 720-722 (1970)
2.09(p,p')*                     25           H      6MONTG

Water solubility (ppm): 
0.14                            25           R      RREVAH 103: 1-59 (1988)
0.0013(o,p')                                 R      RREVAH 103: 1-59 (1988)
0.04                            20           R      RREVAH 103: 1-59 (1988)
0.0012                          25           R      RREVAH 103: 1-59 (1988)
0.014                                        R      RREVAH 103: 1-59 (1988)
0.12(p,p')                                   R      RREVAH 103: 1-59 (1988)
0.040(p,p')                     20           H      6MONTG
0.065(p,p')*                    24           H      6MONTG

Organic solubility (ppm):
4.40E4      N-OCTANOL            4           H      6MONTG
6.37E4      N-OCTANOL           20           H      6MONTG
7.31E4      TRIOLEIN             4           H      6MONTG
9.63E4      TRIOLEIN            12           H      6MONTG
1.06E5      TRIOLEIN            20           H      6MONTG

Henrys law (Pa m3/mol):
1.02                            25           H      6MONTG

Octanol/water partitioning (log Kow):
5.69-6.96                                    H      6MONTG

Acid dissociation (pKa):
                                                          

Soil sorption:
soiltype         temp.    Kd     Koc    %om    pH   reference
--------         -----    --     ---    ---    --   ---------
                                 381000(o,p')       RREVAH 103: 1-59 (1988)
                                 883000(p,p')       RREVAH 103: 1-59 (1988)

Field dissipation halflife(days):
value              test area          pH    source  reference
-----              ---------          --    ------  ---------
2-15.6 YRS.                                  H      6DEGRA

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

Comments: