Phenyl sodium arsenate

Dichlorophenylarsine when added to an excess of sodium carbonate solution it gives rise to the formation of phenyl sodium arsenate and phosgene. 

Phenyl sodium arsenate on being treated with benzenediazonium chloride affords diphenylarsinic acid with the elimination of a mole each of nitrogen, sodium chloride and sodium hydroxide. 

Na NaOH H2SO4 vinyl acetate HgO sodium tetrafluoro silicate n-phenyl azo piperidine. Incandescent reaction of liquid HF with oxides (e.g., arsenic trioxide, calcium oxide). Dangerous storage hazard with nitric acid + lactic acid nitric acid + propylene glycol (mixtures evolve gas which may burst a sealed container). Reacts with water or steam to produce toxic and corrosive fumes. When heated to decomposition it emits highly corrosive fumes of F . See also FLUORIDES. 

The mixture is stirred continuously and maintained for 3 hours at 15° C., when sodium phenyl arsenate is formed. This is neutralised with hydrochloric acid and filtered through a press in order to separate resinous substances which are formed. The phenyl arsenic acid in the filtrate is reduced to phenyl arsenious oxide by passing a current of sulphur dioxide through. A heavy oil deposits at the bottom of the vessel and this is removed by decantation and redissolved in 40° B. sodium hydroxide solution. After diluting with 8 cu. m. of water, the solution is cooled to 15° C. and run slowly into another solution of diazobenzene chloride prepared as before. The sodium salt of diphenyl arsenic acid which is formed is slightly acidified with hydrochloric acid, the diphenyl arsenic acid filtered off and redissolved in 20° B6. hydrochloric acid (i part of the arsenic acid requires 3 parts of hydrochloric acid) and the solution obtained is then run into an iron vessel, lined internally with tiles. Sulphur dioxide is then passed through for 8 hours while the temperature is maintained at about 80° C. Diphenyl chloroarsine then separates as an oil which forms a layer at the bottom of the vessel. It is separated off and dried in vacuo. 

Treatment with moist silver oxide gives a solution of the corresponding hydroxide dry silver oxide does not yield an oxide but decomj)oses the chloride with formation of mercury diphenyl, mercuric oxide, and silver chloride. When an acetone solution of phenylmercuric chloride is treated with a similar solution of sodium iodide, phenylmercuric iodide is formed." Arsenic trichloride heated at 100° C. for four to five hours with the chloride delds phenyl dichloroarsine. With phenyl iododichloride it yields mercuric chloride and diphenyl iodonium chloride. Ethyl mercaptan decomposes phenylmercuric chloride at 150° 0. jitlding ethyl thio-mercurie chloride, ClHg.SEt. ... 

When triphenylarsine in xylene is heated with hydrogen (60 atm) benzene and arsenic are produced 267). Raney nickel cleaves tri-(a-naphthyl)arsine and triphenylarsine yielding binaphthyl and biphenyl respectively 265). Nickel-aluminum alloy in aqueous alkali gives aniline from arsanilic acid 268), and sodium amide in boiling piperidine cleaves benzenearsonic acid 269). Phenyl groups are also lost from triphenylarsine when this is irradiated with thermal neutrons 270). 

Chromated copper arsenate. See Copper chrome arsenate Chromate copper arsenate Chromate(1 -), [3-[(4,5-dihydro-3-methyl-5-oxo-1 -phenyl-1 H-pyrazol-4-yl) azo]-2-hydroxy-5-nitrobenzenesulfonato (3-)] hydroxy-, sodium. See Acid orange 74... 

Pesticide/herbicide production - arsenates, arsenites of sodium, calcium, lead, organoarsenides such as phenyl arsenic and diarseno-diphenyl compounds, probably in soils... 

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