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.

EPR‐spectrum of irradiated potassium dichromate single crystals

Abstract: EPR-spectra of X-irradiated potassium dichromate crystals are studied at various temperatures from RT to LNT. The most intensive lines are interpreted as due to radicals CrO43− (A-lines) and CrO3− (C-lines), resulting from Cr2O7 owing to X-irradiation. Hyperfine structure of C-line, due to interaction of unpaired electron with Cr53 nucleus, occurs at low temperatures, and new unobserved earlier Q-lines appear near-by C-line. The spectrum may be described by usual spin Hamiltonian for S = 1/2 with following parameters: for A-line gz = 1.9841, gy = 1.9685, gx = 1.9592; for C-line gz = 1.9148, gy = 1.9671, gx = 1.9886, |Az| = 30.53 · 10−4 cm−1, |Ax| = 10.62 · 10−4 cm−1, |Ay| = 6.62 · 10−4 cm−1. Russian Text Ignored.

Study on teratogenic effect of potassium dichromate on Vicia faba root tip cells

Abstract: We studied the aberrant effects of different concentrations of potassium dichromate on Vicia faba root tip cells. The micronucleus and chromosome aberration assay was conducted to determine the micronucleus rate and chromosome aberration rate of Vicia faba root tip cells induced by potassium dichromate. The result indicated that potassium dichromate could increase the micronucleus rate of Vicia faba root tip cells. Within certain range of concentration the rate of micronucleus was found to be increased with the increase of potassium dichromate concentration,but beyond this range the rate of micronucleus decreased with further increase of potassium dichromate concentration. The potassium dichromate at different concentrations could increase the cell mitosis index. Besides,it also caused various types of chromosome aberration,and the rates of chromosome aberration were always higher than that of the control group. The conclusion of this study was that potassium dichromate has obvious teratogenic effect on Vicia faba root tip cells.

Thermal decomposition of ammonium nitrate with three-component additives

Abstract: Results of a thermal analysis of a system constituted by ammonium nitrate and a three-component additive with Mg(NO3)2 as a promising ecologically clean oxidizing agent for high-energy condensed systems are presented.

Super conducting heat transfer medium, its prepn. method and super conducting heat transferring appts.

Abstract: A superconducting heat transfer medium that has three basic layers, the first layer being various combinations of sodium, beryllium, a metal such as manganese or aluminum, calcium, boron and dichromate radical; the second layer formed over the first layer and being various combinations of cobalt, manganese, beryllium, strontium, rhodium, copper, beta -titanium, potassium, boron, calcium, a metal such as manganese or aluminum and the dichromate radical; and the third layer formed over the second layer and being various combinations of rhodium oxide, potassium dichromate, radium oxide, sodium dichromate, silver dichromate, monocrystalline silicon, beryllium oxide, strontium chromate, boron oxide, beta -titanium and a metal dichromate, such as manganese dichromate or aluminum dichromate. The three layers can be applied to a conduit and then heat polarized to form a superconducting heat transfer device that transfers heat without any net heat loss, or can be applied to a pair of plates having a small cavity relative to a large surface area to form a heat sink that can immediately disperse heat from a heat source.