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Disodium methanearsonate

Monosodium methanearsonate (MSMA) [2163-80-6] CH AsONaOOH, disodium methanearsonate (DSMA) [144-21-8], CH2AsO(NaO)2, cacodyhc acid [75-60-5], (CH2)2AsOOH, and arsenic acid [7778-39-4], H AsO, are used ia agriculture appHcations (11,12). MSMA, DMSA, and cacodyUc acid are used as herbicides (qv) especially ia cotton (qv) fields for the control of Johnson and nutsedge grass and other weeds. Arsenic acid (13) and cacodyhc acid may be used as a desiccant for the defoHation of the cotton boU prior to harvesting. Calcium arsenate [7778-44-1], Ca2(As0 2> once an important chemical for the control of the boU weevil and cotton worm, has disappeared from appHcation and the use of lead arsenate [7784-40-9], Pb AsO, for fmit crops is currentiy restricted. [Pg.329]

Stevens, J.T., DiPasquale, L.C., and Farmer. J.D. The acute inhalation toxicology of the technical grade organoarsenical herbicides, cacodylic acid and disodium methanearsonic acid a route comparison, Bull. Environ. Contam. Toxicol, 21 (3) 304-311, 1979. [Pg.1729]

Disodium Arsenate Heptahydrate Disodium Ethylenebis (Dithiocarbamate) Disodium Methanearsonate Disodium Methyl Arsonate Disodium Nitrilotriacetate Distillate Flashed Feed Stocks Distillate Straight Run Disulfatozirconic Acid Dithane Sodium Arsenate Nabarn Methanearsonic Acid, Sodium Salts Medianearsonic Acid, Sodium Salts Nitrilotriacetic Acid and Salts Distillate Flashed Feed Stocks Distillate Straight Run Zirconium Sulfate Nabam... [Pg.46]

Methyldiiodoarsine has been prepared in a variety of ways treatment of an alcoholic solution of methylarsenic oxide, CH3AsO, with an excess of hydriodic acid,1 passing methylarsine into an alcoholic solution of iodine,2 the action of sulfur dioxide on methylarsenic tetraiodide,3 the action of methyl iodide on arsenic,4 and treatment of a solution of disodium methanearsonate and potassium iodide with hydrochloric acid and sulfur dioxide.6 The following directions are essentially the last method combined with the preparation of the disodium methanearsonate in situ.6,7 The use of an alcoholic medium greatly facilitates the reaction between sodium arsenite and methyl iodide. [Pg.113]

The percentage recoveries obtained by the above digestion followed by atomic absorption spectrometric determination are given in Table 1. The recoveries obtained by the same method when applied to arsenic spiked water samples are shown in Table 2. Figure 1 shows the effect of ultra-violet irradiation as a function of time for triphenylarsine oxide, disodium methanearsonate and dimethylarsinic acid. The extent of arsenic recovery using... [Pg.175]

TABLE 2. Recovery of arsenic from triphenylarsine oxide, disodium methanearsonate and dimethylarsinic acid spiked into a water samples A and B with wet digestion employing 15ml of 30% hydrogen peroxide and 5 ml of sulphuric acid with analysis by silver diethyldithioearbamate ... [Pg.176]

FIGURE 1. Recovery of arsenic after ultra-violet exposure as a function of time triphenylarsine oxide disodium methanearsonate dimethylarsinic acid. Reproduced from Reference 69 by permission of Interscience Publishers... [Pg.176]

Several acidic solvent systems and types of supports work with varying efficiency (Table 23). Cellulose and silica gel H (with organic binder) allow the movement of arsenite, but arsenate and disodium methanearsonate (DSMA) remain on the origin. DSMA, arsenate and arsenite separate best on thin-layer plates coated with silica gel G (calcium sulphate binder). [Pg.227]

Monoammonium Methanearsonate (MAMA), Monosodium Methanearsonate (MSMA), Disodium Methanearsonate (DSMA))... [Pg.13]

See other pages where Disodium methanearsonate is mentioned: [Pg.1481]    [Pg.1481]    [Pg.206]    [Pg.235]    [Pg.411]    [Pg.172]    [Pg.176]    [Pg.176]    [Pg.176]    [Pg.177]    [Pg.185]    [Pg.186]    [Pg.186]    [Pg.186]    [Pg.186]    [Pg.187]    [Pg.170]    [Pg.174]    [Pg.174]    [Pg.174]    [Pg.175]    [Pg.183]    [Pg.184]    [Pg.184]    [Pg.184]    [Pg.184]    [Pg.185]    [Pg.470]    [Pg.483]    [Pg.329]    [Pg.248]    [Pg.248]    [Pg.696]    [Pg.730]   
See also in sourсe #XX -- [ Pg.1504 , Pg.1532 ]

See also in sourсe #XX -- [ Pg.1504 , Pg.1532 ]

See also in sourсe #XX -- [ Pg.20 ]



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Disodium

Methanearsonates

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