葡聚糖70
- 別名：Dextran 70;9004-54-0
- 編碼：ACJ0015A
- 級別：EP & BP
- 簡介：葡聚糖是以蔗糖為培養基經腸膜狀明串珠菌菌屬發酵生成的高分子量聚吡喃葡糖精制處理而得。易溶于水。微溶于乙醇，在中性溶液中很穩定，遇強酸及升高溫度下被水解，在堿性溶液中端基能被氧化。
基礎信息
| 中文名 | 葡聚糖70 |
| 英文名 | Dextran 70 |
| 分子式 | (C6H10O5)n |
| 品牌 | Seebio |
| CAS | 9004-54-0 |
產品介紹
應用
用作凍干和真空干燥過程中酶、微生物、細胞等的干燥穩定劑。用于科研實驗研究等。
質量指標
| Molecular weight | 64000~76000 |
| Molecular weight distribution | M10≤185000 |
| Molecular weight distribution | M90≥15000 |
| Solubility | Very soluble in water,very slightly in alcohol, |
| Appearance of solution | Clear and colourless |
| Identification - Specific optical rotation | +195.0~+201.0° |
| Identification - Infrared absorption spectrogram | Comparing with the spectrum obtained from dextran CRS |
| Acidity or alkalinity | Reaction with phenolphthalein ,NaOH and HCl |
| Nitrogen | ≤110ppm |
| Residual solvents - Ethanol | ≤0.5% |
| Residual solvents - Methanol | ≤0.05% |
| Residual solvents - Other | ≤0.5% |
| Heavy metals | ≤10ppm |
| Loss on drying | ≤7.0% |
| Sulphated ash | ≤0.3% |
| Bacterial endotoxins | <16 IU/g |
| Microbial | ≤100 CFU/g |
| Contamination | Not detected |
| Appearance | White powder |
MSDS
相關資料
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