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| CAS号 : | 611-00-7 |
精确质量 : | 277.85800 |
| 分子式 : | C7H4Br2O2 |
logP : | 2.90980 |
| 分子量 : | 279.91300 |
PSA : | 37.30000 |
2,4-二溴苯甲酸 | |
2,4-Dibromobenzoic Acid | |
611-00-7 | |
C7H4Br2O2 | |
279.91300 | |
37.30000 | |
2.90980 | |
277.85800 |
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1.642
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叶状柄黄色粉末或晶体
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157.3ºC
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336.6ºC at 760 mmHg
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174ºC
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2.083 g/cm3
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Xi
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2916399090
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品名, 成分含量, 用途, 丙烯酸、丙烯酸盐或酯应报明包装 |
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2916399090 其他芳香一元羧酸. 增值税率:17.0% 退税率:9.0% 监管条件:无 最惠国关税:6.5% 普通关税:30.0% |
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2916399090 other aromatic monocarboxylic acids, their anhydrides, halides, peroxides, peroxyacids and their derivatives VAT:17.0% Tax rebate rate:9.0% Supervision conditions:none MFN tariff:6.5% General tariff:30.0% |
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2916399090. Other aromatic monocarboxylic acids, their anhydrides, halides, peroxides, peroxyacids and their derivatives. General tariff: |
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由2,4-二氨基甲苯经重氮化、溴化、氧化而得: 将2,4-二氨基甲苯溶于乙酸中,在30℃以下用亚硝基硫酸进行重氮化。然后将所得重氮盐用溴化亚铜进行溴化,在30℃以下搅拌1h后进行水蒸气蒸馏。蒸出的油状物用5%氢氧化钠洗涤一次,将所得2,4-二溴甲苯用工业发烟硝酸氧化,析出白色结晶,经精制而成品。 | |
有机合成中间体。 |
