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Sodium dichromate

About: Sodium dichromate is a research topic. Over the lifetime, 421 publications have been published within this topic receiving 6202 citations. The topic is also known as: Disodium salt & sodium bichromate.


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Patent
05 Sep 1980
TL;DR: In this article, a method for passivating the surface of a recorded metal substrate in which the substrate is immersed for 5-30 minutes in a 35° C.-85° C. aqueous bath containing from about 5 to 30 g/l of an alkaline cleaner and from about 2.5 to 20 g /l of sodium dichromate, potassium dichromeate, sodium permanganate, or mixtures thereof was presented.
Abstract: A method for passivating the surface of a recorded metal substrate in which the substrate is immersed for 5-30 minutes in a 35° C.-85° C. aqueous bath containing from about 5 to 30 g/l of an alkaline cleaner and from about 2.5 to 20 g/l of sodium dichromate, potassium dichromate, sodium permanganate, potassium permanganate, or mixtures thereof.

4 citations

Patent
13 Aug 1992
TL;DR: The color of the color carrier changes during the presence of ethanol from light-grey to light-blue to dark blue, depending on the quantity of contained alcohol as mentioned in this paper, under the effect of developing vapors, during the oxidation of the biological material.
Abstract: Reagent is offered for the determining of the ethanol and method of determining the presence of ethanol in the human body by the method of processing of the biological material by the reagent, composed from the component 1, presenting itself as 0.06-0.36M of solution of sodium dichromate in water, and componet 2--concentrated sulphuric acid; during this biological material is added to the component 1, in the type of preferable saliva, soon after, component 2 is added with proportionate number of the components in volume 0.02-0.12:1:0.25-0.9. Mix and incubate in the period of 1.5-3 min. and determine the presence and quantity of the contained ethanol by the changing of the color carrier, saturated with liquid 3-10% solution of sodium nitroprissidi, 1-5% water solution of gelatine and 10-30% solution of morpholine in water, containing 1-20% multi-atom alcohol, under the effect of developing vapors, during the oxidation of the biological material. The color of the carrier changes during the presence of ethanol from light-grey to light-blue to dark blue, depending on the quantity of contained alcohol.

3 citations

Patent
Donald John Barclay1, James M. Vigar1
20 Nov 1978
TL;DR: In this article, a method for brightening an electroplated chromium deposit was proposed, where the deposited chromium is contacted with a solution having a constituent capable of forming complexes with chromium hydroxide species and of detaching the complexes so formed from the surface of an Electroplated deposit.
Abstract: A method for brightening an electroplated chromium deposit wherein the deposited chromium is contacted with a solution having a constituent capable of forming complexes with chromium hydroxide species and of detaching the complexes so formed from the surface of an electroplated deposit. Preferably the solution is an alkaline ferricyanide solution or a solution of sodium dichromate in sulphuric acid.

3 citations

Reference EntryDOI
19 Apr 2013
TL;DR: Sodium sulfate, Na2SO4, is used as a filler in soaps and detergents and in the manufacturing process of kraft paper, and it is also used in glassmaking, in textiles, glass and carpet fresheners as mentioned in this paper.
Abstract: Sodium sulfate, Na2SO4, is principally used as a filler in soaps and detergents and in the manufacturing process of kraft paper. These uses consume about 80% of the world’s production. It is also used in glassmaking, in textiles, glass, and carpet fresheners. Both sodium sulfate and sodium bisulfate, NaHSO4, are used to adjust the pH of various solutions and to dilute certain dyes. Sodium bisulfate is a mild acid safe for household cleaning and where a mild acid is needed. About half of the sodium sulfate production is derived from naturally occurring salts and brines. The other half is produced as a by-product in the manufacture of rayon, sodium dichromate, resorcinol, and silica pigments. Sodium hydrosulfide, sodium sulfide, and sodium tetrasulfide are somewhat interchangeable in many applications. Uses range from ore flotation to leather tanning and from pulp processing in kraft pulping to lubricant manufacture. The processes used to manufacture these compounds are described. Sulfide solubilities are discussed. Keywords: sodium sulfate; soap; rayon; sodium sulfite; sodium sulfate; sodium sulfate decahydrate; sodium bisulfate; minerals; glauber’s salt; paper; detergents; sodium hydrosulfide; sodium sulfide; sodium tetrasulfide; pulp processing; ore flotation

3 citations


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Performance
Metrics
No. of papers in the topic in previous years
YearPapers
20211
20201
201916
201817
20178
201617