5-磺基水杨酸

5-Sulfosalicylic acid dihydrate

CAS号:   5965-83-3

分子式:   C7H10O8S

分子量:   254.21

别名:      二水合-2-羟基-5-磺基苯甲酸;磺基水杨酸;磺基水杨酸,二水;二水磺基水杨酸

性状

白色结晶或结晶性粉末，白色结晶或结晶性粉末，熔点：120℃,遇微量铁时即变粉红色结晶体，高温时分解为酚和水杨酸。能溶于乙醚，易溶于水和乙醇。

质量标准

GB/T 10705-89

项目Item                                                                         分析纯   化学纯

                                                                                           (AR)    (CP)

含量(C7H6O6S2H2O)Assay,%                                   ≥ 99.0    98.0（HPLC)

对铁灵敏度Sensitivity to iron                                      合格    合格

澄清度试验Clarity                                                         合格    合格

水不溶物Insoluble matter in water,%                       ≤ 0.005   0.01

灼烧残渣（以硫酸盐计）Ignition residue,%           ≤ 0.02    0.05

氯化物(Cl)Chloride,%                                                ≤ 0.002   0.005

硫酸盐(SO4)Sulfate,%　                                             ≤ 0.1     0.5

铁（Fe)Iron,%                                                              ≤ 0.0001  0.0005

重金属(以Pb计)Heavy metals,%                              ≤ 0.005   0.001

水杨酸(HOC6H4(OOH)Salicylic acid                       ≤ 0.02    0.2

ACS级

项目名称Item                                                          ACS Grade

含量(HOC6H3(COOH)SO3H·2H2O)Assay         99.0-101.0%

水不溶物Insoluble matter                                    ≤0.02%

灼烧残渣Residue after ignition                            ≤0.1%

氯化物(Cl)Chloride(Cl)                                        ≤0.001%

水杨酸(HOC6H4COOH)Salicylic acid                ≤0.04%

硫酸盐(SO4)Sulfate                                               ≤0.02%

重金属(以Pb计)Heavy metals(as Pb)               ≤0.002%

铁(Fe)Iron(Fe)                                                       ≤0.001%

品级Grade                                                 电泳专用 

                                              (for electrophoresis, ≥99%)

外观Appearance                                            白色粉末

红外光谱Infrared spectrum                                 Conforms

纯度Purity                                                ≥99.0% (HPLC)

不溶物Insoluble matter                                    ≤0.02 %

氯Chloride Content                                        ≤0.001 %

硫酸盐Sulfate                                             ≤0.02 %

重金属Heavy Metal                                         ≤0.002 %

铁Iron (Fe)                                               ≤0.001 %

水杨酸Salicylic acid                                      ≤0.04 %

电泳固定试验Suitable for fixing solution                  pass test

用途

用作生化试剂、分析试剂及络合指示剂