葡聚糖70
- 別名：Dextran 70;9004-54-0
- 編碼：ACJ0015A
- 級(jí)別：EP & BP
- 簡介：葡聚糖是以蔗糖為培養(yǎng)基經(jīng)腸膜狀明串珠菌菌屬發(fā)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(wěn)定，遇強(qiáng)酸及升高溫度下被水解，在堿性溶液中端基能被氧化。
基礎(chǔ)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(chǎn)品介紹
應(yīng)用
用作凍干和真空干燥過程中酶、微生物、細(xì)胞等的干燥穩(wěn)定劑。用于科研實(shí)驗(yàn)研究等。
質(zhì)量指標(biāo)
| 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
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