Kafr, 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. Kafr is extracted from the trunk of kafr tree. The older the kafr tree, the more kafr is in it. The extraction method is to cut the tree trunk into small pieces and distill it with water. After the kafr oil is heated, it rises with water vapor, and it can form kafr 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 kafr forests, and many old kafrstromy byly staré více než tisíc let. Později japonská vláda snížila velké množstvíkafr for export in Taiwan. Therefore, Taiwan's kafr 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.
