The use of tung oil for lighting dwellings has seen its day. 用桐油照明的时代已经过去了。
The conjugated double bond in tung oil molecular with high activity can take place substitution reaction with one of ortho or para hydrogens of phenol. 桐油的共轭双键具有极强的反应活性，易与苯酚芳环上邻或对位的活性氢发生傅氏取代反应。
