Silver permanganate, decomposition

Procedure A piece of annealed asbestos is inserted and gently pressed into the tube (it is held by the constriction of the tube) and 1 mg of the sample well mixed with 50 mg of the silver permanganate decomposition product is added on the filtration layer thus formed. The layer of the mixture is tightened with a lump of asbestos. Liquids are introduced with a capillary pipette on the... 

The presence of hydrogen manifests itself immediately after the oxidation of the organic substance with silver permanganate decomposition product by the formation of small droplets of water condensed on the cool sides of the decomposition tube. 

This is known as the Prout—Tompkins equation and has found application to many systems, in addition to the thermal decomposition of potassium permanganate [465] with which it is often associated. The kinetic behaviour of silver permanganate was somewhat different and in a variation of... 

Oxidation with the decomposition product of silver permanganate is also very rapid. The procedure makes possible the detection of C, H, N, S, Cl, Br, I, P, and Hg. If combined with the method of Vasak and Sedivec (8), As can also be detected. 

Oxidation with the Decomposition Product of Silver Permanganate (14)... 

Immediately after mineralization of the organic substance with the decomposition product of silver permanganate a rubber tube ending with a rubber ball (used, for example, for filling automatic burettes) is connected to the upper end of the tube and the gases are carefully expelled over a pure surface of a freshly filtered saturated barium hydroxide solution (- 1 ml in a micro test tube). If the sample contains carbon, ah easily observable turbidity of BaCOs occurs. 

Hydrogen trisulphide is much more easily combustible than the crude parent hydrogen polysulphide. Exposure to light tends to accelerate its decomposition. It slowly reduces concentrated sulphuric acid to sulphur dioxide, whilst on contact with dry silver oxide, cupric oxide, lead dioxide or mercuric oxide, it bursts into explosive combustion,2 a residue of the metallic sulphide being obtained. Many other metallic oxides and most salts bring about a less vigorous decomposition metals in the massive condition only react with it slowly. With potassium permanganate or dichromate the reaction is violent. 

DOT CLASSIFICATION 4.3 Label Danger When Wet, Corrosive, Flammable Liquid SAFETY PROFILE Moderately toxic by inhaladon. Corrosive. A severe irritant to skin, eyes, and mucous membranes. Ignites spontaneously in ait. A very dangerous fire hazard when exposed to heat or flame. Forms impact-sensitive explosive mixtures with potassium permanganate, lead(II) oxide, lead(TV) oxide, copper oxide, silver oxide. To fight fire, use water, foam, CO2, mist. When heated to decomposition it emits toxic fumes of CL. See also CHLOROSILANE. 

The chloride is prepared by the action of dilute hydrochloric acid upon the iiitrate, or by using potassium chloride and carbon dioxide. When treated with moist silver oxide it yields an aqueous solution of the hydi oxide, the latter also being formed when freshly precipitated mercuric oxide, allyl alcohol, and water are shaken together. Reduction of the chloride by zinc and hydrochloric acid gives an odour of allyl alcohol, whilst oxidation with permanganate causes the immediate decomposition of the compound mth the formation of oxalic acid. 

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