产品介绍：
产品说明
一般描述
for biochemistry
应用
Vitamin B₁₂ for biochemistry. CAS 68-19-9, pH 6.0 (1 g/l, H₂O, 20 °C).
分析说明
| Assay (photometric, calculated on dried substance) | 97.0 - 100.0 % |
| Identity (IR-spectrum) | conforms |
| Absorption ratio (A 361 nm/278 nm) | 1.70 - 1.88 |
| Absorption ratio (A 361 nm/550 nm) | 3.15 - 3.40 |
| Absorption ratio (A 351 nm/361 nm) | 0.57 - 0.65 |
| Acetone (HS-GC) | ≤ 5000 ppm |
| Other residual solvents (ICH Q3C) | excluded by production process |
| Related substances (HPLC) | ≤ 3.0 % |
| Loss on Drying (105 °C) | ≤ 4.0 % |
基本信息
产品性质
| 质量水平 | 100 |
| 形式 | solid |
| pH值(酸碱度) | 6.0 (20 ℃, 1 g/L in H2O) |
| mp | >300 ℃ |
| 溶解性 | 12 g/L |
| 堆积密度 | 450‑600 kg/m3 |
| 储存温度 | 15-25℃ |
安全信息
| 储存分类代码 | 11 - Combustible Solids |
| WGK | WGK 1 |
