Sodium Carbonate Peroxide

Sodium carbonate peroxide breaks down into sodium carbonate and hydrogen peroxide. The hydrogen peroxide acts as a bleach and as an antimicrobial agent. The high alkalinity of the sodium carbonate boosts the bleaching effect of hydrogen peroxide. 

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Oxygen bleaches such as sodium carbonate peroxide (also called sodium percarbonate), sodium peroxide, or sodium perborate are made by reacting molecules with hydrogen peroxide. When the result is added to water, the hydrogen peroxide is released. 

Sodium carbonate peroxide is added to peroxide toothpaste as a whitener. It breaks down into sodium carbonate (washing soda) and hydrogen peroxide. The hydrogen peroxide bleaches the teeth and kills germs. 

Silver peroxide Sodium bromate Sodium carbonate peroxide Sodium chlorate Sodium chlorite Sodium dichloro-s-triazinetrione (sodium dichloroisocyanurate)... 

Carbonic acid, disodium salt compd. with hydrogen peroxide (2 3) Disodium carbonate, compound with hydrogen peroxide (2 3) Disodium carbonate, hydrogen peroxide (2 3) EINECS 239-707-6 FB Sodium percarbonate Oxyper, Perdox Peroxy sodium carbonate Sodium carbonate peroxide Sodium percarbonate. Bleaching agent for domestic and industrial use, denture cleaner, mild antiseptic. Chemoxal Degussa AG Interox Am. 

Sodium carbonate peroxide 3487 Sodium hydrogen methylarsonate 2584... 

Sodium carbonate (2 1). See Sodium carbonate Sodium carbonate peroxide (INCI) Sodium carbonate peroxohydrate Sodium carbonate peroxyhydrate. See Sodium percarbonate Sodium carbonate stabilized sulfonated polystyrene sodium salt. See Sodium polystyrene sulfonate Sodium 2-(1-carboxyethoxy)-1-methyl-2-oxoethyl octadecanoate. See Sodium stearoyl lactylate... 

It is usually preferable to oxidise the compound directly as follows. Intimately mix 0 02-0 05 g. of the eompound with 3 g. of sodium peroxide and 2 g. of anhydrous sodium carbonate in a niekel erucible. Heat the crueible and its eontents with a small flame, gently at first, afterwards more strongly until the eontents are fused, and eontinue heating for a further 10 minutes. Allow to stand, extract the contents of the crucible with water, and filter. Add exeess of eoneentrated nitrie acid to the filtrate and test with ammonium molybdate reagent as above. A yellow preeipitate indicates the presenee of phosphorus. It must be borne in mind that the above treatment 1 eonvert any arsenie present into arsenate. 

It is recommended that the eompound be fused with a mixture of sodium carbonate (2 parts) and sodium peroxide (1 part) as in the test for Plvoaphoms. Extract the fused mass with water, filter, and acidify with dilute hydrochloric acid. Pass hydrogen sulphide through the hot solution arsenic is precipitated as yellow arsenic sulphide. If antimony is present, it will be precipitated as orange antimony trisulphide. 

An ammoniacal solution is added just before use to activate the hydrogen peroxide. Ammonia is preferred over sodium carbonate (40) or ethanolamines for maximum bleaching. The alkaline solution can be formulated iato a shampoo vehicle with oleate soaps or ethoxylated fatty alcohols. When the bleach is appHed to areas such as new hair growth, a viscous cream or paste may be preferred, formulated with fatty alcohols, alkanolamides, or other thickeners. 

Molecular Addition. Oxyacid salts, metal peroxides, nitrogen compounds, and others from crystalline peroxyhydrates in the presence of hydrogen peroxide. When dissolved in water, the peroxyhydrates react as solutions of their components. The peroxyhydrates formed from sodium carbonate and urea are commercially available. Examples of peroxyhydrates can be found in the Hterature (29,30). 

When dissolved ia water, the solution is identical with that obtained by dissolving sodium carbonate ia aqueous hydrogen peroxide. There is some evidence for the presence of the traces of tme peroxocarbonate anion, HCO , ia these solutions (95). If the peroxohydrate is heated for about an hour at 100°C and then allowed to cool to room temperature, some decomposition occurs and the product effervesces when placed ia water. Electron spia resonance experiments (64) iadicate that free radicals are present ia this partially decomposed material, but the nature of these radicals is obscure. 

Organic selenium compounds and siUceous materials (rock, ore, concentrates) are fused with mixtures of sodium carbonate and various oxidants, eg, sodium peroxide, potassium nitrate, or potassium persulfate. For volatile compounds, this fusion is performed in a bomb or a closed system microwave digestion vessel. An oxidizing fusion usually converts selenium into Se(VI) rather than Se(IV). 

Tin ores and concentrates can be brought into solution by fusing at red heat in a nickel cmcible with sodium carbonate and sodium peroxide, leaching in water, acidifying with hydrochloric acid, and digesting with nickel sheet. The solution is cooled in carbon dioxide, and titrated with a standard potassium iodate—iodide solution using starch as an indicator. 

Golorfastness to Bleaching. In fastness to hypochlorite bleachiag, ISO 10S-N01, the specimen is agitated ia a solution of sodium, calcium, or lithium hypochlorite containing 2 g/L available chlorine buffered to pH 11.0 with sodium carbonate for 1 h at 20°C and 50 1 Hquor-to-goods ratio. The specimen is tinsed ia water, hydrogen peroxide, or sodium bisulfite solution to remove free chlorine, dried, and assessed. 

Many functional groups are stable to alkaline hydrogen peroxide. Acetate esters are usually hydrolyzed under the reaction conditions although methods have been developed to prevent hydrolysis.For the preparation of the 4,5-oxiranes of desoxycorticosterone, hydrocortisone, and cortisone, the alkali-sensitive ketol side chains must be protected with a base-resistant group, e.g., the tetrahydropyranyl ether or the ethylene ketal derivative. Sodium carbonate has been used successfully as a base with unprotected ketol side chains, but it should be noted that some ketols are sensitive to sodium carbonate in the absence of hydrogen peroxide. The spiroketal side chain of the sapogenins is stable to the basic reaction conditions. 

Substances which are insoluble or only partially soluble in acids are brought into solution by fusion with the appropriate reagent. The most commonly used fusion reagents, or fluxes as they are called, are anhydrous sodium carbonate, either alone or, less frequently, mixed with potassium nitrate or sodium peroxide potassium pyrosulphate, or sodium pyrosulphate sodium peroxide sodium hydroxide or potassium hydroxide. Anhydrous lithium metaborate has found favour as a flux, especially for materials containing silica 12 when the resulting fused mass is dissolved in dilute acids, no separation of silica takes place as it does when a sodium carbonate melt is similarly treated. Other advantages claimed for lithium metaborate are the following. 

Naturally, the flux employed will depend upon the nature of the insoluble substance. Thus acidic materials are attacked by basic fluxes (carbonates, hydroxides, metaborates), whilst basic materials are attacked by acidic fluxes (pyroborates, pyrosulphates, and acid fluorides). In some instances an oxidising medium is useful, in which case sodium peroxide or sodium carbonate mixed with sodium peroxide or potassium nitrate may be used. The vessel in which fusion is effected must be carefully chosen platinum crucibles are employed for... 

A. Dry Process Discussion. The oxidation is carried out by fusion with sodium peroxide, or, less efficiently, with sodium carbonate and potassium nitrate ... 

Procedure. Dry some finely powdered pyrites at 100 °C for 1 hour. Place about 1 g of anhydrous sodium carbonate into the crucible, and weigh accurately into it 0.4-0.5 g of the pyrites. Add 5-6 g of sodium peroxide, and mix well with a... 

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