抗坏血酸/50-81-7

白色结晶或粉末。在空气中遇光渐变黄，水溶液呈酸性反应，在空气中易氧化变质。溶于水、醇，不溶于苯、氯仿及乙醚. 熔点: 190-192℃ 比旋光度:20.5°
质量标准
  

GB/T 15347-94
项目Item                                               分析纯
                                                        (AR)
含量(C₆H₈O₆)Assay,%                                    ≥ 99.7
比旋光度［α］²⁰_DSpecitic rotation                  +20.5°～+21.5°
澄清度试验Clarity                                         合格
灼烧残渣(以硫酸盐计)Ignition residue,%                 ≤ 0.05
干燥失重Drying loss，%                                 ≤ 0.1
氯化物(Cl)Chloride,%                                   ≤ 0.005
硫酸盐(SO₄)Sulfate,%                                   ≤ 0.002
铁（Fe)Iron,%                                          ≤ 0.0002
重金属(以Pb计)Heavy metals,%                           ≤ 0.001


ACS级
项目名称Item                                          ACS Grade
含量(C₆H₈O₆)Assay                                      ≥99.0%
比旋光度[α]^25℃_DSpecific rotation                      21.0°±0.5°
灼烧残渣Residue after ignition                         ≤0.1%
重金属(以Pb计)Heavy metals(as Pb)                      ≤0.002%
铁(Fe)Iron(Fe)                                         ≤0.001%


99.99% metals basis:


外观Appearance                          White Powder
红外光谱Infrared spectrometry           Conforms to Structure 
纯度Purity                              ≥99.99% Based on Trace Metals Impurities
比旋光度Specific rotation [a]20/D        +20.5 to +21.5 °
总痕量金属杂质total metallic impurities ≤100ppm by ICP Atomic emission



品级Grade                               用于细胞培养   
                                        (for cell culture) 
外观Appearance                          白色至类白色粉末
红外光谱鉴别Infrared spectrometry       Conforms
纯度Purity                              ≥98.0% (碘量滴定)   
水溶解试验solubility in water           合格，50 MG/ML 
细胞培养试验Cell culture test           PASS 


品级Grade                               用于植物细胞培养   
                                        (for plant cell culture) 
外观Appearance                          白色至类白色粉末
红外光谱鉴别Infrared spectrometry       Conforms
纯度Purity                              ≥98.0% (碘量滴定)   
水溶解试验solubility in water           合格，50 MG/ML 
植物细胞培养试验Plant cell culture test PASS 

品级Grade                               优级纯   
                                        (GR) 
外观Appearance                          白色至类白色粉末
红外光谱鉴别Infrared spectrometry       Conforms
纯度Purity                              ≥99.9% (碘量滴定)   
水溶解试验solubility in water           合格，50 MG/ML 


USP30级,325目

红外光谱鉴别Infrared spectrometry        Conforms
纯度Purity(碘量滴定)                     ≥99.9%    
比旋光度Specific rotation [a]20/D        +20.5 to +21.5 °
灼烧残渣Residue on ignition              ≤0.1 %
重金属Heavy metals (as Pb)               ≤0.002%
溶液残留Residual solvents                Meets the requirements