质量标准: | 氯化镁,7791-18-6,Magnesium chloride hexahydrate GB/T672-88 项目Item 优等纯 分析纯 化学纯 (GR) (AR) (CP) 含量(MgCl2•6H2O)Assay,% ≥99.0 98.0 97.0 水溶液反应Water solution reaction 合格 合格 合格 澄清度试验Clarity 合格 合格 合格 水不溶物Insoluble matter,% ≤0.003 0.005 0.01 乙醇溶解试验Solubility(inethanol) 合格 合格 合格 硫酸盐(SO4)Sulfate,% ≤0.02 0.005 0.01 总氮量(N)Total nitrogen,% ≤0.002 0.005 0.01 磷酸盐(PO4)Phosphate,% ≤0.0005 0.001 0.002 钙(Ca)Calcium,% ≤0.01 0.05 0.1 铁(Fe)Iron,% ≤0.002 0.0005 0.001 钡和锶(以Ba计)Barium and strontium,% ≤0.002 0.005 0.005 重金属(以Pb计)Heavy metals,% ≤0.0002 0.0005 0.001 氯化镁,7791-18-6,Magnesium chloride hexahydrate ACS级 项目名称Item ACS Grade 含量(MgCl2•6H2O)Assay 99.0-102.0% 水不溶物Insoluble matter ≤0.005% 硝酸盐(NO3)Nitrate ≤0.001% 磷酸盐(PO4)Phosphate ≤5ppm 硫酸盐(SO4)Sulfate ≤0.002% 铵(NH4)Ammonium ≤0.002% 钡(Ba)Barium(Ba) ≤0.005% 钙(Ca)Calcium(Ca) ≤0.01% 锰(Mn)Manganese(Mn) ≤5ppm 钾(K)Potassium(K) ≤0.005% 钠(Na)Sodium(Na) ≤0.005% 锶(Sr)Strontium(Sr) ≤0.005% 重金属(以Pb计)Heavy metals(as Pb) ≤5ppm 铁(Fe)Iron(Fe) ≤5ppm USP, EP, BP 级 ASSAY (MgCl2.6H2O) 98.0 - 101.0% pH OF A 5% SOLUTION @ 25oC 4.5 - 7.0 WATER 51.0 - 55.0% INSOLUBLE MATTER -- 0.005% SULFATE -- 0.005% BARIUM TO PASS TEST CALCIUM (Ca) -- 0.01% POTASSIUM (K) TO PASS TEST HEAVY METALS -- 0.001% APPEARANCE OF SOLUTION TO PASS TEST ACIDITY OR ALKALINITY TO PASS TEST BROMIDES -- 500 PPM ARSENIC (As) -- 2 PPM IRON (Fe) -- 10 PPM |