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Kamfer, 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. Kamfer is extracted from the trunk of kamfer tree. The older the kamfer tree, the more kamfer is in it. The extraction method is to cut the tree trunk into small pieces and distill it with water. After the kamfer oil is heated, it rises with water vapor, and it can form kamfer 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 kamfer forests, and many old kamferbomen waren meer dan duizend jaar oud. Later heeft de Japanse regering een groot aantalkamfer for export in Taiwan. Therefore, Taiwan's kamfer 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.