对氯苯乙酮

对氯苯乙酮

4'-Chloroacetophenone

99-91-2

C8H7ClO

154.59400

17.07000

2.54260

154.01900

n20/D 1.554(lit.)

无色至淡黄色液体

库房低温通风干燥,防明火,防高温,防潮

194 °F

232 °C(lit.)

74-76 °C(lit.)

111 mg/L (25 ºC)

1.192 g/mL at 25 °C(lit.)

Stable at room temperature in closed containers under normal storage and handling conditions.

8 mm Hg ( 90 °C)

KM5600000

6.1

29147090

3

S26-S28-S36/37/39-S45-S28A

II

UN 3416 6.1/PG 2

T+; Xn

R26; R36/37/38

2933990090

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%

<p>由氯苯与乙酐反应而得:把无水三氯化铝、无水二硫化碳与干燥的氯苯一起加热、搅拌,在微沸时慢慢滴入乙酐。加完后搅拌回流1h,回收二硫化碳。反应物冷却到室温温热时,在搅拌下慢慢倒入含有盐酸的碎冰中,分层应清晰,如不清晰,应补充盐酸少许。在此溶液中倒入少量苯后提取,收集油层,水层再用苯提取一次,将提取液与油层合并,用约15%的氢氧化钠洗去酸性,再用水洗至中性,干燥,减压蒸馏后,收集粗品馏分,将其冷冻48h后,分离母液,将结晶熔化即为成品。收率83.1%。 </p>

<p>用作荧光增白剂、制药和中间体原料。</p>