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- 贮存:密封保存
用途:络合滴定指示剂,色层分析用试剂;缓冲剂;比色法测定氨基酸时作标准用。检验铜、金和银。制备组织培养基。在有机合成和生物化学中用作生化试剂和溶剂。
白色结晶或结晶性粉末。味甜。溶于水,微溶于吡啶,不溶于乙醚。25℃,100ml水中溶解度为25.0g,50℃为39.1g,75℃为54.4g,100℃为67.2g。热至233℃开始分解,290℃全部结块。最小致死量(猫,静脉)3000mg/kg。
密度:1.1607
熔点:182 ºC
沸点:233 ºC
质量标准
项目Item 分析纯
(AR)
含量Assay,% 99.5-100.5
pH(50g/L溶液,25℃) 5.8-6.4
澄清度试验Clarity 合格
水不溶物Insoluble matter in water,% ≤ 0.01
灼烧残渣(以硫酸盐计)Ignition residue,% ≤ 0.01
氯化物(Cl)Chloride,% ≤ 0.001
硫酸盐(SO4)Sulfate,% ≤ 0.001
铵(NH4)Ammonium,%≤ 0.002
铁(Fe)Iron,% ≤ 0.0005
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