. Hydroxylamine : its quantitative determination and some double salts . ^^ ^ ^^4j2> which separates out as a deep blue crystal- line powder of purple lustre. This compound is also formed whenhydroxylamine hydrochloride is boiled with potassium ferri-cyanidein aqueous solution, and remains unchanged when treated with water,dilute mineral acids, oxalic acid, or glacial acetic acid. The color remains the same when the crystalline violet salt is digested •fBer. 52, 241-45+Ber 39, 2204-2208. -4- HI with 4% ainmonluin hydroxido solution. Tho quantitative expQrlmontshows that one-half ia converte
. Hydroxylamine : its quantitative determination and some double salts . ^^ ^ ^^4j2> which separates out as a deep blue crystal- line powder of purple lustre. This compound is also formed whenhydroxylamine hydrochloride is boiled with potassium ferri-cyanidein aqueous solution, and remains unchanged when treated with water,dilute mineral acids, oxalic acid, or glacial acetic acid. The color remains the same when the crystalline violet salt is digested •fBer. 52, 241-45+Ber 39, 2204-2208. -4- HI with 4% ainmonluin hydroxido solution. Tho quantitative expQrlmontshows that one-half ia converted into nitro prusside, and the otherhalf into ferric-amnoniuin ferro-cyanide, +The action of CNBr on hydroxylaraine ia almost explp- Bive, 2 CNBr+SNHg0H=HCN+Ng4-C0g+NH^Br+HBr. o The reaction is modified by working at a temperature of-20 and with the compounds dissolved ir a mixture of absolute methyl alcohol and ether. Then a 75^ solution yields di-hydroxy-guanidine hydro-bromide ,C(NH),HBr. The action probably takes place as follows:- CNBr + NH^OH = + HBr + NHgOH,HBr = ,C(:NH) The crystals are colorless flat hygroscopic needles, ±Cinsa and Luzzatto made experiments on the toxicityof hydroxylamine, the influence of its presence on the oxidationproducts in the urine of animala to which hydroxylamlne had beenadministered, Tl^e blood was examined spectroscopically. As apoison hydroxylamlne is four or five times as powerful as nitrousacid. In th
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