Name | Specifications | Packing | Price | Delivery |
L-Ascorbic acid 6-palmitate | 99% | 25g | RMB 132 | 促銷 |
L-Ascorbic acid 6-palmitate | 99% | 100g | RMB 255.2 | 促銷 |
L-Ascorbic acid 6-palmitate | 99% | 500g | RMB 1302.4 | 促銷 |
L-Ascorbic acid 6-palmitate | USP級(jí) | 25g | RMB 187 | 現(xiàn)貨 |
L-Ascorbic acid 6-palmitate | USP級(jí) | 100g | RMB 385 | 現(xiàn)貨 |
L-Ascorbic acid 6-palmitate | USP級(jí) | 500g | RMB 1694 | 現(xiàn)貨 |
含量assay ≥99% (碘量滴定)
比旋度optical activity [α]20/D +23±1°, c = 1% in ethanol
灼燒殘?jiān)黫gn. residue ≤0.2% (as SO4)
干燥損失loss on drying ≤0.2%
熔點(diǎn)mp 113.0 - 117.0°C
乙醇溶解性實(shí)驗(yàn)Solubility in EtOH 溶液透明
品級(jí)Grade USP級(jí)
(USP)
鑒別試驗(yàn)Identity Pass
初熔點(diǎn)Initial Melting Point ≥107 °C
終熔點(diǎn)Final Melting Point ≤117 °C
比旋光度Specific Rotation 21 - 24 °
干燥損失Loss on Drying ≤2.0 %
灼燒殘?jiān)黂esidue on ignition (Ash) ≤0.1 %
重金屬Heavy Metal ≤0.001 %
Residual Solvents USP <467> Meets Requirements
含量Assay 95.0 - 100.5 %
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