抗坏血酸-6-棕榈酸酯

99%：

含量assay                         ≥99% (碘量滴定)
比旋度optical activity [α]20/D    +23±1°, c = 1% in ethanol
灼烧残渣ign. residue              ≤0.2% (as SO4)
干燥损失loss on drying            ≤0.2%
熔点mp                            113.0 - 117.0°C
乙醇溶解性实验Solubility in EtOH  溶液透明



品级Grade                              USP级  
                                       (USP)
鉴别试验Identity                       Pass
初熔点Initial Melting Point            ≥107 °C
终熔点Final Melting Point              ≤117 °C
比旋光度Specific Rotation              21 - 24 °
干燥损失Loss on Drying                 ≤2.0 %
灼烧残渣Residue on ignition (Ash)      ≤0.1 %
重金属Heavy Metal                      ≤0.001 %
Residual Solvents USP <467>            Meets Requirements
含量Assay                              95.0 - 100.5 %