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 : Q/HWC032-2020 广州和为医药科技有限公司化学品制造标准
Product No. : CD100672
Product Name : Sodium sulfite anhydrous
Product Spec. : 分析纯 AR,≥97.0%
Packges : 25kg 100g 500g 1kg
CAS号 : 7757-83-7
分子式 : Na2SO3
分子量 : 126.04
酶学委员会编号 : 231-821-4
MDL编号 : MFCD00003503
颜色外观 Color Appearance : 白色结晶粉末 White crystal powder
含量 Assay(Na2SO3) : ≥97.0%
澄清度试验 Clarity of solution : 合格 Pass
水中不溶物 Insoluble matter in water : ≤0.005%
酸性亚硫酸盐（以 NaHSO3 计）Acidity sulfite(as NaHSO3) : 合格 Pass
游离碱（以 Na2CO3 计）Free alkali(as Na2CO3) : ≤0.1%
氯化物 Chloride(Cl) : ≤0.005%
硫代硫酸盐 Thiosulfate (S2O3) : ≤0.01%
铁 Iron(Fe) : ≤0.0005%
砷 Arsenic(As) : ≤0.0001%
重金属（以 Pb 计）Heavy metals(as Pb) : ≤0.001%
熔点 Melting point, ℃ : 500 ℃
Shelf Life ： 730 Days
COA ： Have COA
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