Name | Specifications | Packing | Price | Delivery |
3,4-Dihydro-2H-pyran | 98% | 500ml | RMB 418 | 现货 |
3,4-Dihydro-2H-pyran | 98% | 100ml | RMB 110 | 促销 |
3,4-Dihydro-2H-pyran | 99% | 500ml | RMB 624.8 | 现货 |
3,4-Dihydro-2H-pyran | 99% | 100ml | RMB 132 | 促销 |
3,4-Dihydro-2H-pyran | 98% | 25ml | RMB 77 | 促销 |
外观Appearance 无色透明至黄色液体
红外光谱鉴定Infrared spectrometry 和对照品匹配
纯度Purity ≥99.0% (GC)
折光率Refractive index n20/D 1.4405 - 1.4425
比重Specific gravity (20/20°C) 0.9260 - 0.9320
水分Water <0.3 %
98%:
外观Appearance 无色透明至黄色液体
红外光谱鉴定Infrared spectrometry 和对照品匹配
纯度Purity ≥98.0% (GC)
折光率Refractive index n20/D 1.4400 - 1.4430
比重Specific gravity (20/20°C) 0.9250 - 0.9330
水分Water <0.5 %
四氢呋喃Tetrahydrofuran ≤1.5%
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