Merck 1066579050 亚硫酸钠 (Na₂O₃S, 纤维纸箱 50kg)
制造商: Merck Model: 1066579050 - 报价要求
- 报价要求
Price (exclude VAT) 43,928,850 VND Price (include VAT) 48,321,735 VND
CAS #: 7757-83-7
EC number: 231-821-4
Hill Formula: Na₂O₃S
Molar Mass: 126.04 g/mol
Assay (iodometric): 97.0 - 100.5 %
Identity: passes test
Appearance of solution: passes test
Insoluble matter: ≤ 0.005 %
Free acid: passes test
Titrable free base: ≤ 0.03 meq/g
Chloride (Cl): ≤ 0.02 %
Thiosulfate (S₂O₃): ≤ 0.1 %
Heavy metals (as Pb): ≤ 0.0005 %
As (Arsenic): ≤ 0.0001 %
Cu (Copper): ≤ 0.0005 %
Fe (Iron): ≤ 0.001 %
Pb (Lead): ≤ 0.0005 %
Se (Selenium): ≤ 0.0004 %
Zn (Zinc): ≤ 0.001 %
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