变色酸钠/5808-22-0

溶于水，溶液呈浅褐色。 熔点: 300 °C
质量标准
  

Q/(HQ)SJ 673-95
项目Item　　　　                   分析纯　　  化学纯
                                    (AR)        (CP)
灵敏度Sensitivity                   合格       合格
水溶解试验Solubility in water       合格       合格
盐酸溶解试验Solubility in           
hydrochloric acid                   合格       合格
硫酸盐(SO4)Sulfate　                合格        --


项目                                                    ACS级
名称Item                                             （ACS Grade）
澄清度Clarity of solution                             passes test
对硝酸盐灵敏度试验Sensitivity to nitrate              passes test
对甲醛灵敏度试验Sensitivity to formaldehyde           passes test
草酸盐(C₂O₄)Oxalate                                   passes test
磷酸盐(PO₄)Phosphate                                  ≤0.001%
硫酸盐(SO₄)Sulfate                                    ≤0.002%
铁(Fe)Iron(Fe)                                        ≤3ppm
铅(Pb)Lead(Pb)                                        ≤2ppm
易炭化物Substances carbonizable by hot sulfuric acid  passes test


98%：


外观Appearance                              类白色至灰色或浅棕色粉末
红外光谱鉴别Infrared spectrometry           Conforms
含量assay                                   ≥98.0% (中和滴定)  
水中不溶物Insoluble matter in H2O           <0.02 %   
甲醛分析NO3 andformaldehyde-analysys test   passes
硫酸盐Sulfate                               ≤0.02% 
水water                                     8-10%