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| CAS号 : | 587-04-2 |
精确质量 : | 140.00300 |
| 分子式 : | C7H5ClO |
logP : | 2.15250 |
| 分子量 : | 140.56700 |
PSA : | 17.07000 |
3-氯苯甲醛 | |
3-Chlorobenzaldehyde | |
587-04-2 | |
C7H5ClO | |
140.56700 | |
17.07000 | |
2.15250 | |
140.00300 |
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n20/D 1.563(lit.)
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透明非常淡黄色液体
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191 °F
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213-214 °C(lit.)
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9-12 °C(lit.)
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1.241 g/mL at 25 °C(lit.)
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insoluble
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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. Store in a tightly closed container. Store in a cool, dry, well-ventilated area away from incompatible substances.
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2
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29130000
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6.1
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S26-S36-S37/39
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I; II; III
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2810
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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>制备方法：由间硝基苯甲醛经下列步骤得到：将氯化亚锡和浓盐酸配成的溶液冷却至5℃，慢慢分次加入间硝基苯甲醛，激烈搅拌，反应过程很快升温到100℃左右。用冰盐浴冷至2℃左右，析出橙红色结晶，得糊状悬浮液。在搅拌下从液面下加入亚硝酸钠水溶液，保持温度在0-5℃，最后，溶液应使淀粉碘化钾试纸变蓝。将此重氮盐溶液加入75℃的氯化亚铜溶液中，充分混合后，加入浓盐酸搅匀，放置过夜。进行水蒸气蒸馏，收集馏出液，用乙醚提取，提取液用无水氯化钙干燥。过滤，蒸除乙醚后减压蒸馏，收集107-109℃（3.47kPa）馏分即得成品，产率在75%以上。</p> | |
<p>用途：有机中间体。</p> |
