Cânfora, whose IUPAC name is 1,7,7-trimethylbicyclo[2.2.1]heptan-2-one, is a terpenoid organic compound with a chemical formula of C10H16O. It is a white or transparent waxy solid at room temperature and can be used to repel insects. Cânfora is extracted from the trunk of cânfora tree. The older the cânfora tree, the more cânfora is in it. The extraction method is to cut the tree trunk into small pieces and distill it with water. After the cânfora oil is heated, it rises with water vapor, and it can form cânfora when it comes into contact with the pottery jar placed above to cool it. In the early days of northern Taiwan, the mountain forests were mostly primitive cânfora forests, and many old cânforaas árvores tinham mais de mil anos. Mais tarde, o governo japonês cortou uma grande quantidade decânfora for export in Taiwan. Therefore, Taiwan's cânfora export once reached the first place in the world. Most of the mothballs used in the world are synthesized chemically.This substance may be harmful to the environment, and special attention should be paid to water bodies.Store in a sealed, ventilated, dry place, avoid contact with other oxides.