ARS PESTICIDE PROPERTIES last update May 1995


name:METHYL BROMIDE                            CASRN: 74-83-9

molecular formula: CH3BR
molecular weight : 94.94
physical state   : G
(L=liquid; G=gas; S=solid)
reference: 9ACHB2

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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):
4.5    -                                          H    9ACHB2

Melting point(deg C):
-93    -                                         H     9ACHB2

Decomposition point(deg C):
       -

Heat of vaporization(deg C):

--RATE CONSTANTS--

Hydrolysis (per day):

Photolysis (per day):

Vapor pressure (mPa):
2.27E08*                        25              H     9ACHB2 1983 ED.


Water solubility (ppm):       -temp-        -source- -reference-
13400*                                          H     9ACHB2 1983 ED.


Organic solubility (ppm):

Henrys law (Pa m3/mol):
1610*                           25              H     9ACHB2

Octanol/water partitioning (log Kow):

Acid dissociation (pKa):


Soil sorption:
soiltype        temp.   Kd       Koc     %om   pH     reference
                                 22*                  SCSFAD 44:1-8,1985
                                 9                    JAFCAU 29:1050-1059,1981
                                 10                   CMSHAF 10:833-845,1981

Field Dissipation halflife(days):
value           test area        pH        source     reference
31                                            R       8INSFO
55                                            R       8FULLE
43* 


Halflife in soil:
Soiltype           aerobic      anaerobic   source    reference


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