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| CAS号 : | 5538-51-2 |
精确质量 : | 198.00800 |
| 分子式 : | C9H7ClO3 |
logP : | 1.99090 |
| 分子量 : | 198.60300 |
PSA : | 43.37000 |
邻乙酰水杨酰氯 | |
O-Acetylsalicylryl chloride | |
5538-51-2 | |
C9H7ClO3 | |
198.60300 | |
43.37000 | |
1.99090 | |
198.00800 |
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白色晶体
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n20/D 1.536(lit.)
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>230 °F
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Refrigerator
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45-49 °C(lit.)
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1.294 g/cm3
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107-110 °C0.1 mm Hg(lit.)
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II
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8
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2916399090
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UN 3261 8/PG 2
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3
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R22; R29; R34
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S26-S36/37/39-S45
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C
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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: |
以乙酰水杨酸为原料,经氯化而得。将1份乙酰水杨酸和0.0055份吡啶加入干燥的反应罐中,控温50℃以下滴加0.91份氯化亚砜。升温至90℃,反应物溶解成黄色时,继续反应2.5h。90-100℃减压蒸去过量的氯化亚砜和吡啶,得邻乙酰氧基苯甲酰氯。收率95%。另一种方法也以乙酰水杨酸和氯化亚砜为原料,但采用无水三氯化铝,在无水苯中反应3h,第一小时50-55℃,第二小时60-65℃,第三小时73-79℃。配料(重量)比为:乙酰水杨酸:氯化亚砜:三氯化铝:苯=1:0.56:0.02:3。收率91%以上。 | |
用作医药中间体 |
