The use of tung oil for lighting dwellings has seen its day. 用桐油照明的時代已經過去了。
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. 桐油的共軛雙鍵具有極強的反應活性，易與苯酚芳環上鄰或對位的活性氫發生傅氏取代反應。
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