This product can be used for titration analysis, qualitative and quantitative analysis, etc. It should be stored in a cool, ventilated place, sealed, and used within its expiration date. To obtain the product's Certificate of Analysis (COA), please visit www.howeipharm.com to view and download it.
Standard : HG/T 4021-2008 化学试剂 偏重亚硫酸钠（焦亚硫酸钠）
Product No. : CD100435
Product Name : Sodium metabisulfite
Product Spec. : 分析纯 AR,≥96.0%
Packges : 100g 500g 1kg 25kg
CAS号 : 7681-57-4
分子式 : Na2S2O5
分子量 : 190.11
酶学委员会编号 : 231-673-0
MDL编号 : MFCD00167602
颜色外观 Color Appearance : 白色或微黄色结晶粉末 White or tiny yellow crystal
含量 Assay(Na2S2O5) : ≥96.0%
澄清度试验 Clarity of solution : 合格 Pass
水不溶物 Insoluble matter in water : ≤0.005%
氯化物 Chloride(Cl) : ≤0.005%
硫代硫酸盐 Thiosulfate (S2O3) : ≤0.05%
砷 Arsenic(As) : ≤0.0001%
铁 Iron(Fe) : ≤0.0005%
重金属(以 Pb 计)Heavy metals(as Pb) : ≤0.0005%
熔点 Melting point : 150 °C
Shelf Life ： 730 Days
COA ： Have COA
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