Acidified chlorite

The reactivity of acidified chlorite solutions is reduced for bleaching some textiles by adding compounds like polyamines, pyrophosphates, and hydrogen peroxide that suppress the formation of chlorine dioxide (57). Another method is to buffer the solution at pH 5—6 to reduce the rate of chlorine dioxide formation. Hydrolysis of anhydrides and esters or oxidation of alcohols can be used to slowly generate acids to promote chlorine dioxide formation (58). Aldehydes also promote chlorine dioxide generation from neutral chlorite solutions, but the effect is greater than simply lowering the pH as they... 

Treatment of wall glycoproteins with warm acidified chlorite causes... 

The available database to assess the safety of ASC and its residues chlorite and chlorate has limitations, and few of the studies have been conducted to the current standards expected for regulatory submissions. The studies on ASC related to a germicidal product, and some of these involved parenteral administration. The Committee considered that although not directly relevant to oral exposure, these studies provided useful supplementary information that did not raise concern about the use of acidified chlorite as a processing aid. In many of the studies in which chlorite or chlorate was administered in drinking-water, the information provided was insufficient to derive an accurate estimation of the dose received by the animals. 

Kenaf fiber Delignified at 80°C with 4% (w/w) NaOH for 3 h and further bleached with 1.7% acidified chlorite Kaigarzadeh et al. (2012)... 

Chlorous Acid. The physical properties of HCIO2 have been determined using acidified alkah metal chlorite solutions. The existence of HCIO2 is based on spectroscopic evidence (6,13,97). 

In many patent orHterature descriptions, a stabilized chlorine dioxide solution or component is used or described. These stabilized chlorine dioxide solutions are in actuaHty a near neutral pH solution of sodium chlorite that may contain buffer salts or additives to obtain chlorite stabiHty in the pH 6—10 range. The uv spectra of these solutions is identical to that of sodium chlorite. These pH adjusted chlorite solutions can produce the active chlorine dioxide disinfectant from a number of possible organic or inorganic chemical and microbiological reactions that react, acidify, or catalyze the chlorite ion. 

Various methods have been used for the reoxidation of vat leuco dyeings atmospheric skying, hypochlorite, chlorite and acidified dichromate are now rarely employed. Atmospheric oxidation can be difficult to control and thus uneven with some dyes it is also too slow, particularly for continuous methods. Sodium hypochlorite is used only for those few black dyes that tend to become dark green when oxidised with peroxide obviously hypochlorite should be avoided with the many chlorine-sensitive dyes. Similarly sodium chlorite, acidified to below pH 5 with acetic acid, can only be used with certain dyes, although with these it certainly gives rapid oxidation. Dye selectivity is also a drawback with... 

Under normal conditions, solutions of sodium (and other) chlorites when acidified do not evolve chlorine dioxide in dangerous amounts. However, explosive concentrations may result if acid is dropped onto solid chlorites. 

Acidifying a solution containing a chlorite gives a solution of HC102. Halite salts are used primarily as bleaching agents. 

Ruiz-Cruz S, Luo Y, Gonzalez RJ, Yang T and Gonzalez-Aguilar GA. 2006. Acidified sodium chlorite as an alternative to chlorine to control microbial growth on shredded carrots while maintaining quality. J Sci Food Agric 86(12) 1887-1893. 

Inatsu, Y., Bari, M. L., Kawasaki, S., Isshiki, K., and Kawamoto, S. (2005). Efficacy of acidified sodium chlorite treatments in reducing Escherichia coli 0157 H7 on Chinese cabbage. J. Food Prot. 68, 251-255. 

Analysis When it is known that a chlorite is the only active oxidg agent present, it is easily determined by titration of the iodine liberated from KI in an acidified soln. A chlorite does not liberate iodine until the soln is acidified this serves as a qualitative distinction from a hypochlorite. The quantitative analysis of a soln contg chlorite 8c hypochlorite requires detn of the total oxidg power. Hypochlorite is detd on a separate sample by addg an excess of Na arsenite, after making certain the soln is alk. This "soln is saturated with... 

Lead Chlorite, Pb(C102)2, monocl yel crysts, mp explodes at 100° can be pptd when a soln of Na chlorite is acidified with acetic acid and treated with Pb nitrate. Lead chlorite mixed with sugar detonates violently on percussion, and such a mixt has been used in detonators (Ref 5)... 

Silver Chlorite, AgC102, yel crysts, detonates on heating was pptd when an acidified soln of alk chlorite was treated with Ag nitrate Refs l)Me lor 2(1922), 283 2)G.R. Levi,... 

Bagasse ground to 40 mesh, hot extracted with methanol-benzene mixture (1 1) in a soxhlet apparatus and then delignified with acidified sodium chlorite at pH 4.5. 

Reducing the lignin content to 4%, then to 2.62% through delignification with acidified sodium chlorite, increased the rate and yield of grafting progressively in the absence of soda lime glass. 

The chlorite ion is angular (C2v) with a bond angle of about 111°. A solution of HC102 can be prepared by acidifying a chlorite solution with H2S04. In accord with b = 1 in the general formula (HO)aXO, the acids are weak (see Chapter 5). 

Acidified Sodium Chlorite (ASC) Solutions occur as clear, colorless to pale-yellow liquids. The ASC Solutions are equilibrium mixtures of sodium chlorite (NaC102) and chlorous acid (HC102). ASC Solutions are produced by lowering the... 

Acid Calcium Phosphate, 68, (Sl)9, (S2)4 Acid Ferric Sulfate TS, 852 Acid Hydrolysates of Proteins, 13, (Sl)l Acid-Hydrolyzed Milk Protein, 13, (Sl)l Acid-Hydrolyzed Proteins, 13, (Sl)l Acidified Sodium Chlorite Solutions, (S3)3... 

As an aid to understanding the mechanism of oxidation of aldoses by alkaline iodine,126,127 bromine,128 and acidified sodium chlorite,129... 

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