Assertion: hydrogen bromide | /r/CapableOf | keep 40 ℃
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Source sentences:
text: Thiophene, ethylene dichloride, Hydrogen bromide are added successively in the reactor of belt stirrer, condenser, thermometer, keep 40 ℃ of following hydrogen peroxide that drip, drip rear insulation reaction, after half an hour, sample, gas phase is followed the tracks of to detect to 2-bromothiophene relative content and is reached more than 95%, finish reaction, after point oil-yielding stratum rectifying, obtain 2-bromothiophene product.