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| CAS号 : | 821-55-6 |
精确质量 : | 142.13600 |
| 分子式 : | C9H18O |
logP : | 2.93590 |
| 分子量 : | 142.23900 |
PSA : | 17.07000 |
2-壬酮 | |
nonan-2-one | |
821-55-6 | |
C9H18O | |
142.23900 | |
17.07000 | |
2.93590 | |
142.13600 |
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n20/D 1.421(lit.)
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无色至淡黄色液体
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151 °F
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192 °C743 mm Hg(lit.)
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−21 °C(lit.)
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0.82 g/mL at 25 °C(lit.)
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ca 0.5 g/L
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Stable under normal temperatures and pressures.
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Keep away from heat, sparks, and flame. Keep away from sources of ignition. Keep container closed when not in use. Store in a tightly closed container. Store in a cool, dry, well-ventilated area away from incompatible substances.
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RA8225000
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1
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29141990
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S26-S36-S39
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I; II; III
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1993
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Xn
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R20; R36
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2933990090
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2933990090. 其他仅含氮杂原子的杂环化合物. 增值税率:17.0%. 退税率:13.0%. 监管条件:无. 最惠国关税:6.5%. 普通关税:20.0% | |
2933990090. heterocyclic compounds with nitrogen hetero-atom(s) only. VAT:17.0%. Tax rebate rate:13.0%. . MFN tariff:6.5%. General tariff:20.0% |
<p>1. 由甲基庚基原醇用铬酸在室温下氧化而成。 <br>2. 烟草:OR,26。 <br>3.制法: 60mmol的1-己烯<br>(2)与20mmol的甲硼烷在THF中首先制成三己基硼的溶液。连接计氮计。冰盐浴冷却,搅拌下于20min加入重氮丙酮<br>(4)20mmol溶于15mLTHF的溶液,保持反应液温度在20℃。此时有90%的以上的氮气放出。室温搅拌反应30min。再回流30min,以使氮气放出完全。冰浴冷却。加入3mol/L的氢氧化钾20mL。室温搅拌2h,倒入冰水中,戊烷提取(60mL<br>×3)。气相色谱分析证明含89%2-壬铜和少量的1-己醇。干燥后蒸出溶剂,得1.86g2-壬酮<br>(1),收率65%。 </p> | |
<p>1. GB 2760--1996规定为允许使用的食用香料。用作溶剂、有机合成中间体。也用于制备香料。</p> |
