Sodium Sulfite

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sodium sulfite

[′sōd·ē·əm ′səl‚fīt]
(inorganic chemistry)
Na2SO3 White, water-soluble, crystals with a sulfurous, salty taste; decomposes when heated; used as a chemical intermediate and food preservative, in medicine and paper manufacturing, and for dyes and photographic developing.

Sodium Sulfite


Na2SO3, a salt; colorless crystals. Density, 2.63 g/cm3. Solubility in water, 20.82 percent at 19.9°C and 21.70 percent at 99°C. At ordinary temperatures Na2SO3.7H2O crystallizes from aqueous solutions.

Sodium sulfite is a strong reducing agent and oxidizes readily in aqueous solutions upon exposure to air. Upon heating in aqueous solutions, Na2SO3 adds sulfur, with the formation of sodium thiosulfate. Sodium sulfate is obtained by the reaction of solutions of Na2CO3 and SO2. It is a component of photographic developers.

References in periodicals archive ?
Cysteine, ascorbic acid, sodium sulfite, citric acid, thiourea, sodium azide, ethylenediamine tetraacetic acid disodium (EDTA) and sodium diethyldithiocarbamate (DETC) were used as PO inhibitors.
For oxygen uptake measurements, we added 500 [micro]L sodium sulfite to a chamber equipped with a Clark electrode and a stirrer.
Salt Sea salt Garlic salt Onion salt Seasoned salt Celery salt Baking powder Baking soda Sodium bicarbonate Monosodium glutamate Sodium fluoride Sodium acid pyrophosphate Sodium aluminum phosphate Sodium meta bisulfite Calcium disodium EDTA Disodium guanylate Disodium inosinate Sodium biphenyl-2-yl oxide Sodium formate Sodium acetate Sodium diacetate Sodium ascorbate Sodium erythorbate Sodium tartarates Sodium potassium tartarates Sodium orthophosphates Sodium maleate Sodium alginate Sodium & potassium polyphosphates Sodium carboxymethylcellulose Dioctyl sodium sulphosuccinate Sodium carbonate Sodium aluminum phosphate Sodium aluminum silicate Sodium citrate Sodium sulfite Sodium caseinate Sodium benzoate Sodium sorbate Sodium nitrate Sodium nitrite Sodium bisulfite
We used sodium hydroxide (NaOH) and sodium sulfite ([Na.
Pavlath and his colleagues have found that if they treat powdered feather quills with sodium sulfite, the keratin softens and can be stretched into a translucent film.
Sodium sulfite is used as a preservative in foods and as an antioxidant in alcoholic beverages.
There are six sulfites found in foods; sulfur dioxide, potassium bisulfite, sodium bisulfite, sodium sulfite, potassium metabisulfite, and sodium metabisulfite.
Non-toxic sodium sulfite is added to neutralize chlorine, leaving water pure and odorless.
In this process, as reported by Johnson, the beer passes over a water-resistant membrane which separates it from a sodium sulfite solution on the other side.
They are a group of sulfur-based chemicals appearing as sulfur dioxide, sodium sulfite, sodium and potassium bisulfite, and sodium and potassium metabisulfite.
Sodium Sulfite (CAS 7757-83-7) Market Research Report 2012 presents comprehensive data on sodium sulfite markets globally and regionally (Europe, Asia, North America etc.
II], including sodium sulfite, sodium hydrogen sulfite, inorganic salts comprising a metal ion, hydrazine hydrate, mercaptoethanol, tetrahydrofuran, dihydroanthracene, 2,3-dimethylbutadiene, silane compounds, borane compounds, aldehydes, and derivatives of such compounds.