Potassium chlorite

Potassium chlorate Charcoal, etc., or Non-metals Potassium chlorite Sulfur MRH 3.22/82... 

A mixture of 150 parts of oxalic acid, 40 of potassium chlorate, and 20 of water is heated to 60°, and the soln. cone, in vacuo at 50° until it begins to crystallize. The cold liquid i3 then treated with 3 volumes of absolute alcohol, when potassium carbonate is precipitated. Fine deliquescent needles of potassium chlorite can be obtained by fractional crystallization in vacuo. The residue gives a further crop of crystals of the chlorite by treatment with 95 per cent, alcohol. Small yellow crystals of silver or lead chlorites can be obtained by double decomposition. 

N. A. E. Millon4 prepared soln. of potassium chlorite and 8odium chlorite by adding chlorous acid slowly and gradually to a soln. of the alkali hydroxide until the product has a yellow colour. By rapidly evaporating the soln. to complete dryness, a deliquescent salt was obtained which, at 160°, decomposes into chlorate and chloride. This decomposition occurs if the soln. be slowly evaporated in vacuo. If an excess of chlorous acid is used with the potash-lye, a red liquid is obtained which gives off the acid on evaporation, and leaves a residue of the neutral salt. It has been suggested that the red liquid is a soln. of acid potassium chlorite. 

K. G. Thurnlackh and K. F. von Hayn prepared a mixed soln. of potassium chlorate and chlorite by the action of potassium hydroxide free from chlorine on a soln. of chlorine dioxide. Light was carefully excluded, and the soln. was evaporated in vacuo at 45°-50°—potassium chlorate separated out first, and after further evaporation, alcohol was added, and the clear alcoholic soln. evaporated. Needle-like crystals of potassium chlorite, KC102, were obtained which deliquesced on exposure to air. As already indicated in connection with the preparation of the acid, G. Bruni and G. Levi made the potassium chlorite by reducing a soln. of potassium chlorate with oxalic acid and A. Reychler, sodium chlorite, by the action of chlorine dioxide on a soln. of sodium peroxide. Sodium chlorite, NaClQ2, can be also made by double decomposition by treating a soln. of barium chlorite with sodium sulphate and evaporating the clear soln. in vacuo. 

Potassium Chlorite, KC102, col delq crysts, mp dec violently on heating with evolution of flame heat was first prepd by Millon(184 3) by addg chlorous acid to a soln of KOH and evapg(Ref 2). Bruni Levi(Ref 1) prepd the salt by reducing a soln of KC103 to chlorite with oxalic acid... 

Lead chromate Sulfur Lead(II) chlorite Non-metals Phosphorus(III) oxide Potassium bromate Non-metals Potassium chlorate Charcoal, etc., or Non-metals Potassium chlorite Sulfur Potassium perchlorate Sulfur Potassium permanganate Non-metals Silver bromate Sulfur compounds Silver chlorite Hydrochloric acid, etc. 

For potassium chlorite, KC102, see chlorous acid, this series, Vol. VIII. 

Silver chlorite, AgC102.—Silver nitrate and potassium chlorite react to form yellow crystals of the chlorite, an unstable substance decomposing energetically at 105° C. 

The structure of the chlorite ion is the same as when the ion was in potassium chlorite. In that case, the potassium atom donated its electron to the chlorite ion. In this case, we do not know where the extra electron came from, but it does not matter. The total number of valence electrons is still 20, and the number of electrons to be shared is still 4. The chlorite ion does not exist in isolation, even though we sometimes write it alone. 

In a commercial sample of potassium chlorate Dr.Osada found 0.0002 of potassium chlorite and 0.0l6% potassium chloride with a gradual increase with exposure to sun light in the sun during December the chlorite increased to 0.002 and in ultraviolet light after 500 hours the chloride increased to 0.l6 o. Potassium chlorite, KCIO., ignites or explodes in contact with sulphur or a sulphide and potassium chloride, KCl, as described above. Therefore the chlorite probably promotes the decomposition of KCIO3 when it is heated. Of course, the amount of potassium chlorite or chloride may be too small to cause a spontaneous explosion, but ultraviolet light does not improve the quality of potassium chlorate. 

Three animal models have been used to demonstrate the effect of iodine in promoting thyroiditis. Obese strain chickens spontaneously develop a disease very similar to Hashimoto thyroiditis. They were the first model that showed that exposure to iodine affects the course of disease. Depletion of iodine after hatching, achieved by injections of potassium chlorite, reduced thyroid infiltration. In contrast, the onset of spontaneous thyroiditis was hastened by adding sodium iodide to the diet. This effect, however, was reduced by administration of antioxidants, suggesting that reactive oxygen intermediates are one mechanism by which iodine contributes to cell injury. 

BENSULFOID (7704-34-9) Combustible solid (flash point 405°F/207°C). Finely divided dry materia forms explosive mixture with air. The vapor reacts violently with lithium carbide. Reacts violently with many substances, including strong oxidizers, aluminum powders, boron, bromine pentafluoride, bromine trifluoride, calcium hypochlorite, carbides, cesium, chlorates, chlorine dioxide, chlorine trifluoride, chromic acid, chromyl chloride, dichlorine oxide, diethylzinc, fluorine, halogen compounds, hexalithium disilicide, lampblack, lead chlorite, lead dioxide, lithium, powdered nickel, nickel catalysis, red phosphorus, phosphorus trioxide, potassium, potassium chlorite, potassium iodate, potassium peroxoferrate, rubidium acetylide, ruthenium tetraoxide, sodium, sodium chlorite, sodium peroxide, tin, uranium, zinc, zinc(II) nitrate, hexahydrate. Forms heat-, friction-, impact-, and shock-sensitive explosive or pyrophoric mixtures with ammonia, ammonium nitrate, barium bromate, bromates, calcium carbide, charcoal, hydrocarbons, iodates, iodine pentafluoride, iodine penloxide, iron, lead chromate, mercurous oxide, mercury nitrate, mercury oxide, nitryl fluoride, nitrogen dioxide, inorganic perchlorates, potassium bromate, potassium nitride, potassium perchlorate, silver nitrate, sodium hydride, sulfur dichloride. Incompatible with barium carbide, calcium, calcium carbide, calcium phosphide, chromates, chromic acid, chromic... 

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