Potassium iodate

About: Potassium iodate is a research topic. Over the lifetime, 611 publications have been published within this topic receiving 5940 citations. The topic is also known as: KIO3.

Determination of iodine content in traditional Egyptian foods before and after a salt iodination programme

Abstract: Iodine (I) intake averaged 33 μg/day among a subpopulation group from the New Valley, an I endemic area in the southern part of Egypt. A salt iodination programme was implemented with 14; 30 or 45 mg iodine/kg salt (as potassium iodate).This iodination led to a 65% increase in the iodine content in foods prepared with iodinated salt. The estimated iodine increased to 63 μg for this Egyptian subpopulation group. The results of the study predict that the optimum iodination level of salt would be 45 mg iodine/kg.

Role of thiols (cysteine and teiourea) in the mechanism of the periodic decomposition reaction of hydrogen peroxide by potassium iodate in an acid medium

Abstract: We have investigated the kinetics of the oxidation of cysteine and thiourea by an excess of potassium iodate under conditions corresponding to the production of auto-oscillations of concentration First-order rate constants have been calculated for the disulfide oxidation of cystine by potassium iodate and of the disulfide of formamidine, the primary oxidation product of thiourea It is shown that thorough oxidation of disulfides by iodate can occur and its stoichiometry is investigated A new oscillating chemical system has been discovered, containing potassium iodate, hydrogen peroxide, thiourea, and a mixture of sulfuric and hydrochloric acids

Method for preparing primary standard reagent potash iodate

Abstract: The invention relates to a method for preparing standard reagent of potassium iodate, comprising the preparation steps as follows: (1) industrial potassium iodate is dissolved in deioned water and heated till being dissolved; potassium carbonate is then added in the solution; the solution is then mixed and reacts for 0.5-1.5 hours; subsequently, the temperature is kept for 1.5-2.5 hours; (2) hydrogen peroxide is added in the solution, the temperature is kept for 0.5-1.5 hours and the solution is filtrated subsequently; (3) pH value is adjusted to 5.5-6.5 by using potassium acid iodate; (4) pH value of the filtrated solution is adjusted to 4-5 by iodic acid and the solution reacts for 1.5-2.5 hours; (5) the filtrated solution is kept still and the temperature is kept; the filtrated solution is filtrated by active carbon and statically arranged and the crystal is suction-filtrated, washed by water and dehydrated by a dehydration machine; the dehydrated crystal is arranged in a drying box and dried and parched with the constant temperature of 90-110 DEG C for 7-9 hours, thus obtaining the standard reagent of potassium iodate. The preparation method can thoroughly remove the impurity metal element, effectively improves the purity of the product, and improves the content under a condition that the clarity is ensured to be qualified, with the content reaching 99.95-100.05%.

Preparation of Aromatic Iodoacetyl Derivatives by Direct Iodination with a Potassium Iodide-Potassium Iodate-Sulfuric Acid System

Abstract: The reaction of aromatic acetyl derivatives with potassium iodide and potassium iodate in acetic acid in the presence of sulfuric acid at room temperature gave iodoacethyl derivatives in good yields.