性状：无气味。有吸湿性。难溶于水(27份水、16份沸水)，不溶于醇和乙醚，其水溶液近中性。有刺激性。

备注: 以上描述，仅作参考，并不表示您收到的产品，与此项描述完全相符，产品的出厂标准，请参见质量标准。

质量标准：

GB/T 1289-94
项目                                                    优级纯  (GR)          分析纯 (AR)  
含量(C₂Na₂O₄)Assay,%                                ≥99.8                 99.8    
pH(50g/L溶液，25℃)pH,%                         ≤7.5-9.5             7.5-8.5    
水不溶物Insiluble matter in water,%             ≤0.005               0.01      
干燥失重Dring loss,%                                 ≤0.01               0.02
氯化物(Cl)Chloride,%                                 ≤0.001              0.002
硫化合物(以SO₄计)Sulfur compounds,%         ≤0.002              0.004
钾(K)Pitassium,%                                      ≤0.005               0.01  
铁(Fe)Iron,%                                           ≤0.0002             0.0005
重金属(以Pb计)Heavy metals,%                   ≤0.001               0.002
易碳化物质Readily carbonizable substances    合格                 合格                
总氮量(N)Total nitrogen,%                        ≤0.001                0.002

ACS级
项目名称　                                    ACS Grade
含量[(COONa)₂]Assay                       ≥99.5%
水不溶物Insoluble matter                  ≤0.005%
干燥失重Loss on drying                    ≤0.01%
酸碱度Neutrality                            Passes test
氯化物(Cl)Chloride                          ≤0.002%
铵(NH₄)Ammonium                           ≤0.002%
硫酸盐(SO₄)Sulfate                          ≤0.002%
重金属(以Pb计)Heavy metals          ≤0.002%
铁(Fe)Iron                                      ≤0.001%
钾(K)Potassium                                ≤0.005%
易炭化物质Substances darkened by  hot sulfate acid                 Passes test

≥99.99% metals basis：

外观Appearance                                 白色粉末
红外光谱鉴别Infrared spectrometry       Conforms to Structure
纯度Purity                                        ≥99.99% Based On Trace Metals Analysis
草酸盐C2O4                                      64.1 - 67.3 % (Titration by KMNO4 )
ICP:                                                 Confirms Sodium Component  
痕量金属分析Trace Metal Analysis         ≤100ppm by ICP Atomic emission

贮存：密封保存

用途：分析化学中作为标定高锰酸钾溶液的基准品。焰火黄色发光剂。

联合国编号

Risk： R21/22-

Safety : S24/25 –

Hazard : Xn -