Topic
Potassium dichromate
About: Potassium dichromate is a research topic. Over the lifetime, 1430 publications have been published within this topic receiving 18967 citations. The topic is also known as: Potassium dichromate(VI) & Chromium potassium oxide.
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TL;DR: In this article, a rapid and mercury pollution-free method for the determination of total iron in the presence of copper is described, where the sample was decomposed either by an acid attack of hydrochloric acid (1 + 2) or by fusion with sodium peroxide.
2 citations
Patent•
06 Mar 1998
TL;DR: In this article, an R-Fe-B based permanent magnet is dipped in alkaline chromic acide treatment liquid composed of at least one kind of chromic acid, sodium dichromate, and potassium dichromates which are adjusted at pH7-11 and at a temperature 60-100 deg.C and alkaline carbonate.
Abstract: PROBLEM TO BE SOLVED: To provide the simpler manufacturing method of an anticorrosion permanent magnet wherein deterioration of magnetic characteristics with time is small. SOLUTION: An R-Fe-B based permanent magnet (R is at least one kind of rare earth elements containing Y) is dipped in alkaline chromic acide treatment liquid composed of at least one kind of chromic acid, sodium dichromate, and potassium dichromate which are adjusted at pH7-11 and at a temperature 60-100 deg.C and alkaline carbonate. Thereby, the surface of the magnet is covered with an anticorrosion protective film.
2 citations
TL;DR: In this paper, a wavelength dispersive X-ray fluorescence spectrometry (XRF) method is described for the analysis of soluble chromium(VI) in chromium plating mist collected from workplace air.
2 citations
Patent•
21 Aug 1995
TL;DR: In this paper, a process of hydroxylation of polybutadiene using hydroxy terminated poly butadiene and reacting it with tetraethyl ammonium chloride, potassium dichromate and pyridine is described.
Abstract: A process of hydroxylation of polybutadiene using hydroxy terminated polybutadiene and reacting it with tetraethyl ammonium chloride, potassium dichromate and pyridine. The polymer product is subsequently washed with hydrochloric acid and water to produce a polybutadiene with both terminal and internal hydroxylation.
2 citations
01 Dec 2015
TL;DR: The delay in tooth eruption observed after exposure to hexavalent chromium is the result of a lower rate of bone remodeling in the developing alveolus, showing the importance of controlling toxic substances in drinking water.
Abstract: Improperly treated hexavalent chromium-containing industrial wastes contaminate drinking water, potentially affecting children taking breast milk or baby bottles prepared with infant formula. Thus, the aim of the present work was to determine the effect of this toxic on bone activity in the developing alveolus during tooth eruption of suckling Wistar rats intoxicated with potassium dichromate. Experimental animals received a daily dose of 12.5mg/kg body weight of potassium dichromate by gavage for 10 days; controls received an equivalent volume of saline solution. Histologic and histomorphometric studies of the mandible were performed. The data were statistically analyzed using Student's t test; statistical significance was set at a value of p <0.05. Experimental animals exhibited delayed tooth eruption, decreased periodontal width and bone volume, a lower percentage of bone formation surfaces, and higher percentage of quiescent surfaces (p<0.05) compared to controls. The delay in tooth eruption observed after exposure to hexavalent chromium is the result of a lower rate of bone remodeling in the developing alveolus. The obtained results show the importance of controlling toxic substances in drinking water, since their effects may alter the growth and development of subjects who were exposed during early infancy.
2 citations