ARS PESTICIDE PROPERTIES DATABASE last updated May 1995

name: DIMETHYLARSINIC ACID            CASRN: 75-60-5      

molecular formula: C2H7AsO2                   
molecular weight: 138.0                      
physical state: S                      
(L=liquid; G=gas; S=solid)                    
reference: 9PMED7

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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):
192 - 198                                    H      9PME10

Decomposition point (deg C):

Heat of vaporization (deg C):

--RATE CONSTANTS--

Hydrolysis (per day):

Photolysis (per day):

Vapor pressure (mPa):
0                                            W    

Water solubility (ppm): 
2000000                         25           H      9PMED7
                                             H      9MERCK 1989
667000                                       H      9HERBH 4th ED 1979
880000                                       P      6USEPA

Organic solubility (ppm):

Henrys law (Pa m3/mol):

Octanol/water partitioning (log Kow):

Acid dissociation (pKa):
6.29                                         H      9PMED7
6.19                                         E      ADCSAJ 111: 55-120 (1972)
6.288                                        E      JAFCAU 24: 717-721 (1976)

Soil sorption:
soiltype         temp.    Kd     Koc    %om    pH   reference
--------         -----    --     ---    ---    --   ---------
                                 6010               6USEPA
                                 2759               6USEPA
                                 17920              6USEPA
                                 1883               6USEPA
                                 8276               6USEPA
                                 1000*              W

Field dissipation halflife(days):
value              test area          pH    source  reference
------             ---------          --    ------  ---------
20                                           E      JAFCAU 30: 580-585 (1982)
ca.100                                       E      ESTHAG 7: 47-50 (1973)
ca.225                                       E      ESTHAG 7: 47-50 (1973)
>125                                         E      ESTHAG 7: 47-50 (1973)
50* 

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

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