草酸铵/6009-70-7

无色结晶或颗粒。无气味，有毒，加热即分解 熔点 133 °C (dec.)(lit.) 密度 1.5 储存条件 Store at RT. 溶解度 H2O: 0.1 M at 20 °C, clear, colorless 水溶解性 45 g/L (20 oC)
质量标准
  

项目名称Item                                                       ACS Grade
含量[(COONH4)2·H2O]Assay                           97.0-101.0%
水不溶物Insoluble matter                                 ≤0.002%
灼烧残渣Residue after ignition                        ≤0.02%
氯化物(Cl)Chloride(Cl)                                      ≤0.002%
硫酸盐(SO4)Sulfate                                           ≤0.002%
重金属(以Pb计)Heavy metals(as Pb)             ≤5ppm
铁(Fe)Iron(Fe)                                                    ≤2ppm

HG/T 3-976-81
项目Item                                                                       优级纯     分析纯    化学纯
                                                                                     (GR)       (AR)      (CP)
含量［(NH4)2C2O4· H2O)］Assay,%                    ≥99.8     99.8      99.5
水溶液反应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 in water,%                      ≤0.003    0.005     0.015
灼烧残渣（以硫酸盐计）Ignition residue,%            ≤0.005    0.01      0.03
氯化物(Cl)Chloride,%                                                  ≤0.0005   0.001     0.002
硫化合物(以SO4计)Sulfur compounds,%                 ≤0.005    0.01      0.02
铁(Fe)Iron,%                                                                   ≤0.0002   0.0005    0.001
重金属(以Pb计)Heavy metals,%                                   ≤0.0002   0.001     0.0015

99.99% metals basis:

外观Appearance                          White Powder or Crystalline Powder 
红外光谱鉴别Infrared spectrometry       Conforms to Structure 
纯度Purity                              ≥99.99% Based on Trace Metals Impurities of ICP
C2O4 (Titration with Kmno4)             60.4% - 64.1%  
痕量金属分析total metallic impurities   ≤100ppm by ICP Atomic emission