过硫酸钠外观为白色晶状粉末，无臭味。过硫酸钠俗称过二硫酸钠；高硫酸钠。其相对密度（水=1）：2.4，其溶解性是溶于水，不溶于乙醇，在潮湿和高温能使分解加速；能被乙醇和银离子分解，在20℃时水中溶解度为549g/L；过硫酸钠也易潮解，在湿空气中和高温都能加速过硫酸钠分解，放出氧而变为焦硫酸钠。过硫酸钠具有强氧化性。
Sodium persulfate is white crystalline powder with no odor. Sodium persulfate is commonly known as sodium persulfate; High sodium sulfate. Its relative density (water=1): 2.4, its solubility is soluble in water, insoluble in ethanol, and it can accelerate the decomposition in damp and high temperature; It can be decomposed by ethanol and silver ions, and the solubility in water is 549g/L at 20 ℃; Sodium persulfate is also easy to deliquescence, which can accelerate the decomposition of sodium persulfate in humid air and high temperature, and release oxygen to become sodium pyrosulfate. Sodium persulfate has strong oxidation.
过硫酸钠质量好换
Sodium persulfate is of good quality
过硫酸钠是由过硫酸铵与硫酸钠和硫酸进行复分解反应制得的，检验过硫酸钠质量好坏的标准，主要看其合成所用的原料。
Sodium persulfate is prepared by the double decomposition reaction of ammonium persulfate, sodium sulfate and sulfuric acid. The standard for testing the quality of sodium persulfate mainly depends on the raw materials used for its synthesis.
在通风柜中，将43g Na₂CO₃·10H₂O与34g (NH₄)₂S₂O₈混合并研磨成糊状体，为了除去氨，可将混合物加热40～50℃，或者通入不含CO₂的空气。然后用玻璃砂芯漏斗将结晶体抽干，并放在暗处干燥。
In the fume hood, mix 43g of Na ∈ CO ｜ · 10H ∈ O with 34g of (NH ₄) ∈ S ∈ O ₈ and grind them into a paste. To remove ammonia, heat the mixture to 40~50 ℃, or introduce air free of CO ∈. Then, use a glass sand core funnel to drain the crystals and dry them in a dark place.
用氢氧化钠代替碳酸钠可以制得更纯的过硫酸钠。在500mL的圆底烧瓶中放入122g(NH₄)₂S₂O₈和100mL浓度为33%的NaOH溶液。将烧瓶与真空泵相连，稍稍加热，在30～40℃的温度下使氨和水蒸出。在溶液体积减原来的一半后，将溶液冷却，用玻璃砂芯漏斗将结晶抽干，并在30～40℃下干燥1～2h。c
A more pure sodium persulfate can be prepared by replacing sodium carbonate with sodium hydroxide. In a 500mL round bottom flask, put 122g (NH ₄) ∈ S ∈ O ₈ and 100mL of 33% NaOH solution. Connect the flask to the vacuum pump, heat it slightly, and evaporate the ammonia and water at 30-40 ℃. After the solution volume is reduced to half of the original volume, the solution is cooled, the crystal is pumped out with a glass sand core funnel, and dried at 30-40 ℃ for 1-2 hours. c
The above is a detailed introduction to sodium persulfate, and we hope it will be helpful to you. If you have any questions, please contact us. We will provide services for you with our attitude http://www.jnjhhg.cn
