1-甲基-2-吡咯烷酮(色谱级）270458-2.5L
| grade | CHROMASOLV® Plus |
| for HPLC | |
| vapor density | 3.4 (vs air) |
| vapor pressure | 0.29 mmHg ( 20 °C) |
| 0.99 mmHg ( 40 °C) | |
| assay | ≥99% |
| autoignition temp. | 518 °F |
| purified by | glass distillation |
| expl. lim. | 9.5 % |
| total impurities | <0.050% water |
| color | ≤10(APHA) |
| refractive index | n |
| bp | 202 °C(lit.) |
| 81-82 °C/10 mmHg(lit.) | |
| mp | −24 °C(lit.) |
| density | 1.028 g/mL at 25 °C(lit.) |
| λ | H2O reference |
| UV absorption | λ: 285 nm Amax: 1.00 |
| λ: 300 nm Amax: 0.50 | |
| λ: 325 nm Amax: 0.10 | |
| λ: 350-400 nm Amax: 0.01 |