色谱乙腈相对其他试剂的特点：
| ACS/HPLC 溶剂特点 |
为用户带来的好处 |
| · 低 UV 背景吸收 · 优异的 HPLC 梯度洗脱基线 |
· 避免了鬼峰及错误结论 |
| · 低固体颗粒及挥发残留 |
· 减少了色谱柱的污染及系统堵塞 · 使用前无需过虑 |
| · 低含水量 |
· 避免了正相色谱柱的失活 |
| · 优异的批次稳定性 |
· 更换批次时无需更改 HPLC 标准方法 · 高通量生产中降低了次品率 |
色谱乙腈技术参数：
| ***公司提供色谱乙腈技术参数： |
|
| 400-254 nm |
max. 0.005 |
| 220 nm |
max. 0.01 |
| 200 nm |
max. 0.05 |
| UV Cut-off, nm |
max. 190 |
| Gradient Elution Test (a.u.): |
|
| 254 nm |
max. 0.005 |
| 210 nm |
max. 0.005 |
| Density (g/mL) at 25°C |
0.775 - 0.780 |
| Fluorescence Trace Impurities, in ppb, measured as Quinine Base: |
|
| at 450 nm Emission |
max. 0.3 |
| at Emission Maximum for Impurities |
max. 1.0 |
| Assay (CH3CN) (by GC, corrected for water) |
min. 99.9 % |
| Appearance |
Passes Test |
| Color (APHA) |
max. 10 |
| Residue after Evaporation |
max. 1 ppm |
| Titrable Acid (µeq/g) |
max. 0.8 |
| Titrable Base (µeq/g) |
max. 0.6 |
| Water (by KF, coulometric) |
max. 100 ppm |
| Carbonyl Compounds (as Acetone) |
max. 25 ppb |
| For Laboratory, Research or Manufacturing Use |
