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| CAS号 : | 492-94-4 |
精确质量 : | 190.02700 |
| 分子式 : | C10H6O4 |
logP : | 1.93820 |
| 分子量 : | 190.15200 |
PSA : | 60.42000 |
糠偶酰 | |
1,2-bis(furan-2-yl)ethane-1,2-dione | |
492-94-4 | |
C10H6O4 | |
190.15200 | |
60.42000 | |
1.93820 | |
190.02700 |
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1.54
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白色晶体或粉末无气味的
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138.4ºC
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302.7ºC at 760 mmHg
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163-165 °C(lit.)
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1.302 g/cm3
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0.000971mmHg at 25°C
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Stable under normal temperatures and pressures.
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Store in a tightly closed container. Store in a cool, dry area away from incompatible substances.
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LV0580000
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3
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S24/25
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2932190090
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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>由糠醛制得。糠醛与芳香醛的性质类似,在氰化钾的催化作用下,发生安息香缩合反应得到对称二味喃羟基乙酮。然后经氧化得到糠偶酰。将158g硫酸铅(含5个结晶水),210g吡啶,90g水用水浴加热搅拌成均相溶液,再加入57.6g糠偶因,水浴加热搅拌2h后倒入1L冷水中,析出结晶,过滤,水洗,乙醇洗。再用乙醇重结晶即得糠偶酰。</p> | |
<p>用于有机合成。</p> |
