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| CAS号 : | 934-00-9 |
精确质量 : | 140.04700 |
| 分子式 : | C7H8O3 |
logP : | 1.10640 |
| 分子量 : | 140.13700 |
PSA : | 49.69000 |
3-甲氧基儿茶酚 | |
3-Methoxycatechol | |
934-00-9 | |
C7H8O3 | |
140.13700 | |
49.69000 | |
1.10640 | |
140.04700 |
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1.579
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>230 °F
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38-43 °C(lit.)
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1.27g/cm3
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146-147 °C15 mm Hg(lit.)
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2909500000
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3
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R36/37/38
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S26-S36
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CZ9002750
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Xi
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2909500000. Ether-phenols, ether-alcohol-phenols and their halogenated, sulphonated, nitrated or nitrosated derivatives |
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品名, 成分含量, 用途 |
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2909500000. 醚酚、醚醇酚及其卤化、磺化、硝化或亚硝化衍生物. 增值税率:17.0%. 退税率:9.0%. 监管条件:无. 最惠国关税:5.5%. 普通关税:30.0% |
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2909500000 ether-phenols, ether-alcohol-phenols and their halogenated, sulphonated, nitrated or nitrosated derivatives VAT:17.0% Tax rebate rate:9.0% Supervision conditions:none MFN tariff:5.5% General tariff:30.0% |
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1. 将2-羟基-3-甲氧基苯甲醛溶于氢氧化钠溶液,在搅拌下滴加过氧化氢,温度保持在45-50℃之间。然后在室温下用氯化钠饱和,用乙醚提取,提取液经干燥并蒸除乙醚后进行减压蒸馏,收集136-138℃(2.93kPa)馏分,得3-甲氧基邻苯二酚。收率68-80%。 | |
用于有机合成 |
