Kingstone Industrial Group Limited  

Product Name: Sodium metabisulphite as a Preservative and Antioxidant From China Manufacturer Model NO.: Na2S2O5 Grade Standard: Industrial Grade Appearance: Powder Type: Sodium Sulfate Purity: 50%~80% Certification: ISO Trademark: Kingstone-HSC Transport Package: Woven Bag Specification: 25kg, 50kg, 1000kg/bag. Origin: China Product Description Quick DetailsCountry of Origin:China CAS No.:7681-57-4 Appearance:white or light brown powder Brand:HSC Molecular formula:Na2S2O5Average Lead Time: 30 daysPackaging Detail: HSC SODIUM metaBISULPHITE packing in the woven bag lined with plastic, net wt. 25kgs or 1000kgs bags.Uses[edit]Food additive[edit]It is used as a preservative and antioxidant in food and is also known asE223.[4]It may cause allergic reactions in those who are sensitive tosulfites, includingrespiratoryreactions inasthmatics,anaphylaxis, and other allergic reactions in sensitive individuals.[5][6]Sodium metabisulfite andpotassium metabisulfiteare the primary ingredients inCampden tablets, used forwineandbeermaking.[7]Theacceptable daily intakeis up to 0.7milligrams per kilogram of body weight.[8]Sodium metabisulfite oxidizes in the liver to sulfate which is excreted in the urine.[8]Sanitization and cleaning agent[edit]It is commonly used inhomebrewingandwinemakingtosanitizeequipment. It is used as a cleaning agent for potable waterreverse osmosismembranes indesalinationsystems. It is also used to removechloraminefrom drinking water after treatment.Other uses[edit]Added to local anaesthetic (lidocaine etc.) solutions to prevent oxidation of vasoconstrictor adrenaline and thus improve the shelf life of the solution[citation needed]It is used in photography.[9]Concentrated sodium metabisulfite can be used to removetree stumps. Some brands contain 98% sodium metabisulfite, and cause degradation ofligninin the stumps, facilitating removal.[10]It is also used as anexcipientin sometablets, such asparacetamol. Approximately 0.5mg is used inepinephrine autoinjectorssuch as the EpiPen.A very important health related aspect of this substance is that it can be added to a blood smear in a test forsickle cell anaemia(and other similar forms ofhaemoglobinmutation). The substances causes defunct cells to sickle (through a complexpolymerisation) hence confirming disease.It is used as the source of SO2in wine. An important anti-oxidant and bactericideIt is also used to precipitate gold from auric acid (gold dissolved inaqua regia).It is used in waste treatment to chemically reduce hexavalent chromium to trivalent chromium which can then be precipitated and removed from an aqueous waste stream.It is used as a bleaching agent in the production of Coconut creamIt is used as a reducing agent to break sulfide bonds in shrunken items of clothing made of natural fibers, thus allowing the garment to go back to its original shape after washingIt is used as an SO2source (mixed with air or oxygen) for the destruction of cyanide in commercial gold cyanidation processes.It is used in the oil and gas industry as a corrosion inhibitor/oxygen scavenger.It is used in the water treatment industry to quench chlorine residualIt is used in tint etching iron-based metal samples for microstructural analysis.Product DescriptionItemStandardNa2S2O5(SO2)65%minFe50ppm maxPb10ppm maxAs2ppm maxCertificates: