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| CAS号 : | 151-10-0 |
精确质量 : | 138.06800 |
| 分子式 : | C8H10O2 |
logP : | 1.70380 |
| 分子量 : | 138.16400 |
PSA : | 18.46000 |
1,3-二甲氧基苯 | |
1,3-Dimethoxybenzene | |
151-10-0 | |
C8H10O2 | |
138.16400 | |
18.46000 | |
1.70380 | |
138.06800 |
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n20/D 1.524(lit.)
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无色液体
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190 °F
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85-87 °C7 mm Hg(lit.)
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-52°C
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1.055 g/mL at 25 °C(lit.)
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0.195mmHg at 25°C
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Stable at room temperature in closed containers under normal storage and handling conditions.
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Keep away from heat, sparks, and flame. Keep away from sources of ignition. Store in a tightly closed container. Store in a cool, dry, well-ventilated area away from incompatible substances.
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CZ6474000
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2
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S24/25
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2909309090
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Xi
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R36/37/38
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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% |
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<p>1,3-二甲氧基苯是由间苯二酚与硫酸二甲酯反应制得。将间苯二酚与氢氧化钠溶液混合,在搅拌下加入硫酸二甲酯,在26～30℃进行甲基化反应,然后经分离、洗涤、蒸馏而得成品。在实验室制备中,将间苯二酚(1mol)、200mL甲醇和硫酸二甲酯(1mol)加入反应器,搅拌溶解,用冰盐浴冷却至-5℃,立即加入150g氢氧化钾与350mL水配制的溶液,发生剧烈反应,在3min内即完成甲基化反应。搅拌5min后,加水冲稀,分出油层,水层用乙醚提取,油层和乙醚萃取液合并,水洗,用无水氯化钙干燥,在水浴上回收乙醚后,再用直接火加热蒸馏,收集216～218℃馏分,可得1,3-二甲氧基苯124g,收率90%。</p> | |
<p>用作医药中间体。是合成杀螨剂苯螨特的中间体，还可用于制备紫外吸收剂UV-9。用作萘类染料及涂料和塑料的中间体,也用作肥皂、洗涤剂和油膏的香料。</p> |
