ARS PESTICIDE PROPERTIES last update May 1995


name:ENDOSULFAN                                CASRN: 115-29-7

molecular formula: C9H6CL6O3S
molecular weight : 406.9
physical state   : S
(L=liquid; G=gas; S=solid)
reference: 9FMCC3

_________________________________________________________________________
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):
70     -    100                                  H     9PMED8,8TH ED.,p.336,1987

Decomposition point(deg C):
       -

Heat of vaporization(deg C):

--RATE CONSTANTS--

Hydrolysis (per day):

Photolysis (per day):
7E-04 *              SOIL        24   6.4        M     9FMCC3

Vapor pressure (mPa):
8.26E-1                          20              M     9FMCC3
1.33E+1                          40              M     9FMCC3
1.20E+3                          80              M     9PMED8,8TH ED.,p.336,1987
0.023 *                          25              M     8HOECH


Water solubility (ppm):       -temp-         -source-  -reference-
0.32 *                           22              M     9FMCC3
1.0E-01                          20              R     9HRLCP(W.J.PHILLIPS),1975
3.2E-01                          22              H     9ACHB2,2ND ED.,1987
5.3E-01                          25              R     9HRLCP(WEIL&QUENTIN),1974

Organic solubility (ppm):
6.5E+4 *  ETHANOL                20              M     9FMCC3
2.0E+5 *  TOLUENE                20              M     9FMCC3
2.4E+4 *  N-HEXANE               20              M     9FMCC3
2E05   *  DICHLOROMETHANE        20

Henrys law (Pa m3/mol):
1.09                             25              C     9HRLCP(MABEY,W.),1982
0.029 *                          25              M     9FMCC3

Octanol/water partitioning (log Kow):
2.23                                             E     ESTHAG, 22(3):272,1988
3.55                             NR              R     9HRLCP(ALI,S.),1978
3.62                             NR              R     9HRLCP(ALI,S.),1978
3.13 *

Acid dissociation (pKa):


Soil sorption:
soiltype        temp.   Kd      Koc      %om   pH     reference
                                2.0E+05               8GLEAM
                                2040                  ETOCDK 8:339-357,1989
                                1.24E+04*             8HOECH

Field Dissipation halflife(days):
value           test area       pH          source    reference
43                                             C      8GLEAM
120                                            E      JEVQAA 16:422-428,1987
50                                             M      8HOECH
10                                             C      8OUSSD
4-8                                            E      JAFCAU 28:1099-1101,1980
60-200                                         P      8EPAHO
60(4-200) *

Halflife in soil:
Soiltype           aerobic      anaerobic   source    reference
SILT LOAM(pH6.4)    27 *                       M      9FMCC3

                         

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