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Dithionite information


The unusual structure of the dithionite anion. It has a remarkably long sulfur-sulfur bond.
A ball-and-stick model of the dithionite ion.

The dithionite is the oxyanion with the formula [S2O4]2−.[1] It is commonly encountered as the salt sodium dithionite. For historical reasons, it is sometimes called hydrosulfite, but it contains no hydrogen and is not a sulfite.[2] The dianion has a steric number of 4 and trigonal pyramidal geometry.

  1. ^ International Union of Pure and Applied Chemistry (2005). Nomenclature of Inorganic Chemistry (IUPAC Recommendations 2005). Cambridge (UK): RSC–IUPAC. ISBN 0-85404-438-8. p. 130. Electronic version.
  2. ^ José Jiménez Barberá; Adolf Metzger; Manfred Wolf (2000). "Sulfites, Thiosulfates, and Dithionites". Ullmann's Encyclopedia of Industrial Chemistry. Weinheim: Wiley-VCH. doi:10.1002/14356007.a25_477. ISBN 978-3527306732.

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Dithionite

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The dithionite is the oxyanion with the formula [S2O4]2−. It is commonly encountered as the salt sodium dithionite. For historical reasons, it is sometimes...

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Sodium dithionite

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Sodium dithionite (also known as sodium hydrosulfite) is a white crystalline powder with a sulfurous odor. Although it is stable in dry air, it decomposes...

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Bleach

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which is used to bleach wool, either as gas or from solutions of sodium dithionite, and sodium borohydride. Bleaches generally react with many other organic...

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Potassium dithionite

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Potassium dithionite or potassium hydrosulfite is a potassium salt of dithionous acid. The compound has UN number UN 1929. As a dithionite, it is closely...

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Bleaching of wood pulp

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oxidizes the chromophores, dithionite reduces these color-causing groups. Dithionite reacts with oxygen, so efficient use of dithionite requires that oxygen...

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Hyposulfite

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acid (H 2S 2O 2), which is also of doubtful existence. Dithionite (S 2O2− 4) as in sodium dithionite. Greenwood, Norman N.; Earnshaw, Alan (1997). Chemistry...

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White

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are oxidizing agents, a fewer number are reducing agents such as sodium dithionite. Bleaches attack the chromophores, the part of a molecule which absorbs...

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Sodium dithionate

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to be in its +5 oxidation state. It should not be confused with sodium dithionite, Na2S2O4, which is a very different compound, and is a powerful reducing...

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Sulfite

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potassium bisulfite, potassium metabisulfite, sodium bisulfite, sodium dithionite, sodium metabisulfite, sodium sulfite, sulfur dioxide and sulfurous acid...

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Potassium ferricyanide

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cytochrome c (E°' ~ 247 mV at pH 7) in isolated mitochondria. Sodium dithionite is usually used as a reducing chemical in such experiments (E°' ~ −420...

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History of photography

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to absorb the sulfur dioxide given off by the chemical dithionite in the developer, dithionite was not required in the developing process. In 1881, he...

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Sodium borohydride

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of sodium borohydride is the production of sodium dithionite from sulfur dioxide: Sodium dithionite is used as a bleaching agent for wood pulp and in...

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Benzydamine

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that the nitroso derivative is reduced with sodium hydrosulfite (sodium dithionite) and not with sodium hyposulfite (sodium thiosulfate), as shown in the...

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In situ chemical reduction

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(dual valent iron) minerals that are needed for the reduction to occur. Dithionite (S 2O2− 4) can also be used as a reductant. It is usually used in addition...

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Rongalite

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sodium dithionite and formaldehyde: Na2S2O4 + 2 CH2O + H2O → HO-CH2-SO3Na + HO-CH2-SO2Na This reaction proceeds quantitatively, such that dithionite can...

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Disproportionation

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2 O ⟶ HNO 3 + HNO 2 {\displaystyle {\ce {2NO2 + H2O -> HNO3 + HNO2}}} Dithionite undergoes acid hydrolysis to thiosulfate and bisulfite: 2 S 2 O 4 2 −...

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Lithium hydride

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with lower alcohols.: 14  LiH reacts with sulfur dioxide to give the dithionite: 2 LiH + 2 SO2 → Li2S2O4 + H2 though above 50 °C the product is lithium...

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Cytochrome

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at wavelengths near 450 nm when the heme iron is reduced (with sodium dithionite) and complexed to carbon monoxide. These enzymes are primarily involved...

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Herbert Bowyer Berkeley

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absorb the sulphur dioxide, which was given off by the chemical dithionite, that dithionite was no longer required in the developing process. Berkeley published...

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Dithionous acid

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formula H2S2O4. It is unstable in pure form, but its salts, known as dithionites, are stable. It was initially assumed that the C2 symmetric structure...

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Sodium metabisulfite

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bisulfite Other cations Potassium metabisulfite Related compounds Sodium dithionite Sodium thiosulfate Sodium sulfate Except where otherwise noted, data are...

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Sulfate

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Peroxydisulfate S2O2−7 Pyrosulfate S2O2−6 Dithionate S2O2−5 Metabisulfite S2O2−4 Dithionite S2O2−3 Thiosulfate S3O2−6 Trithionate S4O2−6 Tetrathionate...

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List of CAS numbers by chemical compound

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sulfate 7757–82–6 Na2S2O3 sodium thiosulfate 7772–98–7 Na2S2O4 sodium dithionite 7775–14–6 Na2S2O5 sodium metabisulfite 7681–57–4 Na2S2O7 sodium pyrosulfate...

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Virtex

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books published by Oktomica Comics Virtex L, otherwise known as sodium dithionite Vertex (disambiguation) This disambiguation page lists articles associated...

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Nickel tetracarbonyl

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prepared by reduction of ammoniacal solutions of nickel sulfate with sodium dithionite under an atmosphere of CO. On moderate heating, Ni(CO)4 decomposes to...

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Luminol

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3-nitrophthalhydrazide. Reduction of the nitro group to an amino group with sodium dithionite (Na2S2O4), via a transient hydroxylamine intermediate, produces luminol...

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Oxyacid

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Thiosulfuric acid S 2O2− 3 Thiosulfate +3 H 2S 2O 4 Dithionous acid S 2O2− 4 Dithionite +3, −1 HOSOSH Thiosulfurous acid OSOS2− Thiosulfite +2 H 2SO 2 Sulfoxylic...

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DCB

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Direct Carrier Billing, a method of doing digital financial transactions Dithionite-Citrate-Bicarbonate method used for iron oxide removal from clays in soil...

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