Natural Camphor

Camphor is refined from crude camphor. Crude camphor is usually processed in winter with more than 50 years old camphor tree trunk and roots as raw materials, cut into thin slices and distilled in wood retter, camphor and camphor oil with water vapor distillation, condensation of white crystals for crude camphor, oil liquid for camphor oil. The total rate is 2.0 to 2.5%. There are two methods for refining crude camphor: air sublimation and continuous fractionation sublimation. In China, air sublimation is the main method. The crude camphor is removed from oil and water by centrifuge first, then melted and sublimed in a sublimation pot, and the camphor vapor is introduced into the first sublimation chamber with the air blown into the top of the pot, and the cooling temperature is controlled to obtain powdery crystalline products. After entering the second and third sublimation chamber, due to the low control temperature, the water and oil content below the boiling point of camphor are condensed and crystallized here with a small amount of camphor vapor, which is the crude camphor product (more than 8% of the oil water) and needs to be refined by re-sublimation

Camphor is a granular crystal obtained from the branches, stems, leaves and roots of camphor family. Camphor has the functions of clearing the orifice, promoting qi retention, eliminating turbidity, killing insects and relieving itching, reducing swelling and relieving pain, treating the symptoms of scabies and pruritus, bruising and toothache.

Camphor is also an important chemical raw material, which is used as a plasticizer in the manufacture of celluloid plastics. When it is used in polyvinyl chloride plastics, the transparency is greatly improved.

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Wangxin@jxhairui.com