


| Name | Specifications | Packing | Price | Delivery | 
| D-(+)-Gluconic acid δ-lactone | 99% | 100g | RMB 88 | |
| D-(+)-Gluconic acid δ-lactone | 99% | 500g | RMB 242 | |
| D-(+)-Gluconic acid δ-lactone | USP级 | 1kg | RMB 308 | 
外观Appearance                      白色至类白色结晶粉末
红外光谱鉴别Infrared spectrometry   和对照品匹配
熔点Melting point                   151°C - 158°C (分解)
纯度Purity                          ≥99.0%  (Titrimetry)
纯度Purity                          ≥99.0% (GC)
比旋度Specific rotation [a]20/D     +60.0 ~ +67.0°(C=10, H2O)
重金属Heavy metals (as Pb)          <20 ppm
灰分Ash                             <0.1 %
铅Pb measure                        < 10 ppm
还原物质Reducing substances         <0.5 %
水溶性实验Solubility in Water       溶液透明
品级Grade                           USP级
鉴别试验IDENTITY                    PASS
铅LEAD                              ≤ 0.001%
重金属Heavy metals                  ≤0.002%
还原性物质REDUCING SUBSTANCES       PASS
含量Assay                           99.0% - 101.0% (Titrimetry)
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