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- 贮存:密封避光干燥阴凉处保存。 避免与金属接触
用途:测定砷、铁、磷及碘的基准试剂,色谱分析试剂,抗氧剂,掩蔽剂,还原剂
白色结晶或粉末。在空气中遇光渐变黄,水溶液呈酸性反应,在空气中易氧化变质。溶于水、醇,不溶于苯、氯仿及乙醚.
熔点: 190-192℃
比旋光度:20.5°
质量标准
项目Item 分析纯
(AR)
含量(C6H8O6)Assay,%≥ 99.7
比旋光度[α]20DSpecitic rotation+20.5°~+21.5°
澄清度试验Clarity 合格
灼烧残渣(以硫酸盐计)Ignition residue,% ≤ 0.05
干燥失重Drying loss,% ≤ 0.1
氯化物(Cl)Chloride,% ≤ 0.005
硫酸盐(SO4)Sulfate,% ≤ 0.002
铁(Fe)Iron,%≤ 0.0002
重金属(以Pb计)Heavy metals,% ≤ 0.001
ACS级
项目名称ItemACS Grade
含量(C6H8O6)Assay≥99.0%
比旋光度[α]25℃DSpecific rotation21.0°±0.5°
灼烧残渣Residue after ignition ≤0.1%
重金属(以Pb计)Heavy metals(as Pb)≤0.002%
铁(Fe)Iron(Fe) ≤0.001%
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