ARS PESTICIDE PROPERTIES DATABASE last updated May 1995


name: ETHYLENE DIBROMIDE (EDB)       CASRN: 109-93-4     

molecular formula: C2H4Br2                    
molecular weight: 187.9                      
physical state: L                     
(L=liquid; G=gas; S=solid)
reference: 9PMED9

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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.
__________________________________________________________________________

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

Boiling point (deg C):
131.5                                        H      9PME10

Melting point (deg C):
9.3                                          H      9PME10

Decomposition point (deg C):

Heat of vaporization (deg C):

--RATE CONSTANTS--

Hydrolysis (per day):
2.37E-4                         25     7     H      6MONTG

Photolysis (per day):

Vapor pressure (mPa):
15E5                            25           H      9PMED9

Water solubility (ppm): 
4300                            30           H      9PMED9
4300*                           25           H      9FACHB 1992
4321                            20           H      9MONTG

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

Henrys law (Pa m3/mol):
65.55                           25           H      9PMED9
                                             H      9FACHB 1992
Octanol/water partitioning (log Kow):
1.76                                         H      6MONTG

Acid dissociation (pKa):
                                                          

Soil sorption:
soiltype         temp.    Kd     Koc    %om    pH   reference
--------         -----    --     ---    ---    --   ---------
                                 44                 6EXTOX
                                 14-160             6EXTOX
                                 21-93              6EXTOX
                                 40,40              90CHS2 V1: pp. 51-143(1972)
                                 32                 8AOACA
                                 44                 6ECBEN 4: 26-38 (1980)
                                 28,41              JAFCAU 15: 444-450 (1964)
                                 34*                W

Field dissipation halflife(days):
value              test area          pH    source  reference
-----              ---------          --    ------  ---------
28-180                                       R      ARSPPD
100*                                         W

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

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