Aliphatic Arsonic And Arsinic Acids And Aliphatic Aromatic Arsinic Acids
Aliphatic Arsonic And Arsinic Acids And Aliphatic Aromatic Arsinic Acids
Armand J Armand James Quick
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09205 N I. Calc. For C 8 Hi O 2 As: As, 33. 8. Found: 33. 8. The light-blue COPPER SALT, [(C 4 H 9 )AsO2]2Cu, is readily precipitated from a solu- tion of dibutyl arsinic acid which has been just neutralized to phenolphthalein with sodium hydroxide by adding copper sulfate solution. The product is filtered, washed and dried for 2 hours at 90 in a vacuum. The yield is nearly quantitative. Analysis. Subs. , 0. 2000: required 17. 0 cc. Of 0. 09205 NI. Calc. For CgHigC^stCu: As, 29. 6. Found: 29. 2.... General Procedure for Aliphatic-aromatic Arsinic Acids. One mole of the dichloro-arsine is dissolved in 4 moles of alkali in the usual way and 1 mole of the halogen compound added gradually, generally at room temperature. The reactions take place rapidly enough so that with the ALIPHATIC ARSONIC AND ARSINIC ACIDS 813 sodium aromatic arsenites neither heating nor stirring are necessary in most cases to give excellent results. To isolate the products which for the most part are not very soluble in water, the reaction mixture is made neutral to phenolphthalein with hydrochloric acid.
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