Potassium Dichromate


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potassium dichromate

[pə′tas·ē·əm dī′krō‚māt]
(inorganic chemistry)
K2Cr2O7 Poisonous, yellowish-red crystals with metallic taste; soluble in water, insoluble in alcohol; melts at 396°C, decomposes at 500°C; used as an oxidizing agent and analytical reagent, and in explosives, matches, and electroplating. Also known as potassium bichromate; red potassium chromate.

Potassium Dichromate

 

K2Cr207. Potassium dichromate is found in nature as the mineral lopezite. It is widely used in certain types of volumetric analysis and as an oxidizing agent in pyrotechnics, photography, and the manufacture of safety matches.

References in periodicals archive ?
Tchounwou, "Potassium dichromate induced cytotoxicity, genotoxicity and oxidative stress in human liver carcinoma (HepG2) cells," International Journal of Environmental Research and Public Health, vol.
Our study indicates that nickel sulfate (32.4%), cobalt dichloride (28.4%), potassium dichromate (25.7%), epoxy resin (21.6%), colophony (18.9%), p-tert-butylphenol formaldehyde resin (17.6%), and disperse blue 106 (13.5%) are more relevant as occupational sensitizers in sewing workers and ironing workers, and colophony (28.6%), p-tert-butylphenol formaldehyde resin (28.6%), potassium dichromate (14.3%), epoxy resin (14.3%), and formaldehyde (7.1%) were found to be more relevant in managers.
Group 2, 3 and 4 were fed Cr (Potassium dichromate, K2Cr2O7; Cr6+), vitamin E and bentonite @ 270 and 150 mg/kg, and 5% of feed, respectively.
Potassium Dichromate Solution: Thirty four grams of [K.sub.2][Cr.sub.2][O.sub.7] was dissolved in 500 ml distilled water and 325 ml of sulphuric acid was added and volume was made up to 1000 ml with distilled water to give 0.23N [K.sub.2][Cr.sub.2][O.sub.7].
The commonest individual sensitizers in our study were potassium dichromate (27.08%), cobalt (16.67%) and fragrance mix (10.47%).
The most greenish, smooth and level dyed sample was yielded by the recipe of post-mordanting potassium dichromate (Fig-1).
Effect of potassium dichromate on histopathologic changes in testicles of white rats and results of atomic pilograms on fur.
The oocysts collected in potassium dichromate had sporulated by the time of examination, which facilitated and confirmed identification as Cyclospora spp.
Polymerization-inhibited juice was prepared by the extraction of polyphenolics, by adsorption onto polyvinylpolypyrrolidone, by the recrystallization of polyphenolics, by oxidation to quinones by potassium dichromate, and by adding 2% TETA and quinones to the juice.
Various chemical oxidizing agents, such as potassium dichromate [13], potassium iodate [14], hydrogen peroxide [15], ferric chloride, or ammonium persulphate, were used [16].
Alphatocopherol protects against the renal damage caused by potassium dichromate. Toxicology 2006; 218: 237-46.
Looking for an Alternative to Potassium Dichromate in the Chemistry Lab.