scispace - formally typeset
Search or ask a question
Topic

Sodium sulfite

About: Sodium sulfite is a research topic. Over the lifetime, 2548 publications have been published within this topic receiving 18523 citations. The topic is also known as: Na2SO3 & Anhydrous sodium sulfite.


Papers
More filters
Journal ArticleDOI
TL;DR: It is hypothesize that a reaction to sodium metabisulfite may be a marker for sulfite allergy in cosmetics and might account for some of the unexplained positives in previous reports.
Abstract: A 45-year-old woman developed dermatitis of the face after she applied a cosmetic package comprising day and night creams. Patch tests were performed with the British Contact Dermatitis Society (BCDS) standard, bases + preservatives, and cosmetic series in addition to samples of both creams and the individual constituents. She had positive tests to both cosmetic creams, sodium sulfite from the manufacturer's samples (5% white soft paraffin (WSP)), and sodium metabisulfite (1% pet) in our bases + preservatives battery. Sodium sulfite is a constituent of both cosmetic creams. We assume that the positive test to sodium metabisulfite is a cross-reaction. We hypothesize that a reaction to sodium metabisulfite may be a marker for sulfite allergy in cosmetics and might account for some of the unexplained positives in previous reports.

23 citations

Journal ArticleDOI
TL;DR: The chemical synthesis of two new bile salt analogues, namely sodium 3 alpha,7 alpha-dihydroxy-5 beta-cholane-24-sulfonate from chenodeoxycholic acid and ursodeoxyCholic acid, respectively, are described.

23 citations

Journal ArticleDOI
TL;DR: In this article, the inhibition efficiency of various concentrations of a caffeine-Zn2+ system in controlling corrosion of mild steel immersed in an aqueous solution containing 60 ppm of Cl− was evaluated by a weight-loss study.
Abstract: The inhibition efficiency (IE) of various concentrations of a caffeine-Zn2+ system in controlling corrosion of mild steel immersed in an aqueous solution containing 60 ppm of Cl− was evaluated by a weight-loss study. The formulation consisting of 50 ppm of caffeine and 50 ppm of Zn2+ showed 91% IE. A synergistic effect was noticed between caffeine and Zn2+. The influence of sodium sulfite (Na2SO3), sodium dodecyl sulphate (SDS)—an anionic surfactant—pH, and a period of immersion on the IE of the caffeine-Zn2+ system has been evaluated. The transport of inhibitors toward the metal surface plays a major role in controlling corrosion of mild steel. Formation of micelles by surfactants changes the IE. The caffeine-Zn2+ system has better IE in the acidic medium than in the basic medium. The IE decreased as the period of immersion increased. The protective film was analyzed by Fourier transform infrared spectroscopy. The film consisted of Fe2+-caffeine complex and zinc hydroxide (Zn[OH]2). The film was...

23 citations

Patent
13 Jun 1983
TL;DR: A transparent soap composition, consisting essentially of over 50% by weight of a complex mixture of the sodium and triethanolamine salts of a fatty acid or acids having from 6 to 18 carbon atoms and an iodine value of 8-15, was defined in this paper.
Abstract: A transparent soap composition, consisting essentially of (a) over 50% by weight of a complex mixture of the sodium and triethanolamine salts of a fatty acid or acids having from 6 to 18 carbon atoms and an iodine value of 8-15, (b) between 0.2 and 1.0 weight percent of a member or members selected from the group consisting of citric acid, sodium citrate and potassium citrate, (c) between 0.2 and 0.1 weight percent of a member or members selected from the group consisting of sodium metabisulfite, sodium sulfite, sodium bisulfite, potassium bisulfite, sodium hydrosulfite, potassium hydrosulfite and potassium sulfite, and potassium metabisulfite, (d) water.

23 citations

Journal ArticleDOI
TL;DR: In this paper, a rapid sequential injection spectrophotometric method for the selective determination of 2,4,6-trinitrotoluene (TNT) in soil samples is presented.
Abstract: A rapid sequential injection spectrophotometric method for the selective determination of 2,4,6-trinitrotoluene (TNT) in soil samples is presented. The method is based on a derivatization reaction of TNT with sodium sulfite in a basic acetone medium. The reaction conditions, namely the percentage of acetone used in the reaction, the sample and reagent volumes, the mixing coil volume, and the reaction time, were optimized. The reaction was found to be particularly sensitive to the concentration of acetone; an acetone/water medium of 88% (v/v) acetone was found to be optimal. A study of the response of the method to other explosives demonstrated that the method is selective for TNT. In particular, it was shown that the method had little (<2%) or no response to other secondary explosives such as 2,4- or 2,6-dinitrotoluene (DNT). An average precision of 6.1% RSD was established for five soil samples (n = 4). The limit of detection was 0.5 μg mL-1 for aqueous standards and 80 μg g-1 for ∼300 mg soil samples. A...

23 citations


Network Information
Related Topics (5)
Cellulose
59K papers, 1.4M citations
74% related
Reagent
60K papers, 1.2M citations
74% related
Aqueous solution
189.5K papers, 3.4M citations
74% related
Adsorption
226.4K papers, 5.9M citations
72% related
Particle size
69.8K papers, 1.7M citations
71% related
Performance
Metrics
No. of papers in the topic in previous years
YearPapers
202325
202240
202122
202073
2019114
2018143