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五水硫代硫酸钠
【别 名】:大苏打、海波
【英 文 名】:Sodium thiosulfate pentahydrate
【分 子 式】:Na2S2O3·5H2O
【分 子 量】:248.17
【理化性质】:五水硫代硫酸钠,无色单斜晶系结晶,无臭,有清凉带苦的味道。 比重 1.729。易溶于水,不溶于醇,水溶液显弱碱性。在潮湿空气中有潮解性,在中性、碱性溶液中较稳定,在酸性溶液中分解,具有强烈的还原性。加热至
100℃,失去 5 个结晶水,在 33℃以上的干燥空气中风化而失去结晶水。
【执行标准】:HG/T2328-2006
【主要用途】: 感光工业用作照相定影剂。造纸工业用作纸浆漂白后的除氯剂。印染工业用作棉织品漂白后的脱氯剂。分析化学用作色层分析、容量分析用试剂。 医药上用作洗涤剂、消毒剂。食品工业用作螯合剂、抗氧化剂等,解氰化物中毒及升汞中毒。
【包 装】:25 公斤/塑编袋;1000 公斤/袋。
Sodium thiosulfate pentahydrate
【Name】:Sodium thiosulfate pentahydrate, Sodium thiosulfate,Hyposulfite
【Molecular formula】:Na2S2O3·5H2O
【Molecular weight】:248.17
【Physical Character】:Sodium thiosulfite, a colorless monoclinic crystal, odorless and cool and bitter.The proportion of 1.729.Soluble in water, insoluble in alcohol, aqueous solution is weak and alkaline.In humid air, there is a tidal solution, which is stable in neutral and alkaline solution, which is decomposed in acidic solution and has strong reductive ability.Heated to 100 ℃, lost five water of crystallization, in more than 33 ℃ dry weathering and lose crystal water in the air.
【National Standard】:HG/T2328-2006
【Application】:The photosensitive industry is used as a photographic fixing agent.The paper industry is used as the chlorine removal agent after bleaching.The printing and dyeing industry is used as the dechlorination agent for cotton fabric bleaching.Analysis and analysis of chemical color chromatography and reagent for capacity analysis.Medicines are used as detergents and disinfectants.The food industry is used as a chelating agent, anti-oxidant, etc., to solve cyanide poisoning and mercury poisoning.
【Package】:25Kgs/Plastic woven bags;1000kgs/Bag or as requested.
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