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Molecular formula : C10H18O MW : 154.24 CAS No. :464-45-9; 507-70-0
nature : white translucent crystal. It smells like camphor, can be dissolved in alcohol and ether, water-soluble. Volatile and sublimated sexual. The goods are optical isomers phenomenon. Previously, it is natural camphor from the system in general is d-borneol. Recent major manufacturer of synthetic camphor, dl - borneol accounted for the majority. D-borneol for six surface lamellae. The temperature of 208 ° C and 212 ° C boiling point. A special pepper odor, and with similar mint flavor. Can sublimation bearing volatile than camphor small. Almost insoluble in water, 176 d-borneol soluble 100 anhydrous ethanol (w / W), deep in the ether, petroleum ether (1:6), benzene (1:5), toluene, acetone, and 10 etrahydronaphthalene TETRALIN. L-borneol melting point of 204 ° C, the boiling point of 210 ° C. Dl borneol 206-207 ° C melting point.
Preparation Methods : camphor dissolved in ethanol, with metallic sodium reduction, or nickel, copper catalyst at atmospheric pressure or under pressure to reinstate camphor, turpentine for raw materials, fractionation distillate be pinene, pinene and oxalic acid and catalytic isomerization Addition oxalate formation of brain-ester, plus caustic soda solution hydrolysis, borneol free, using steam distillation isolated borneol. To pinene as raw materials to produce another borneol process are :-the-pinene into dry HCI, in bornyl chlorine, and its soluble dry ether, by adding magnesium powder, the reaction of magnesium powder disappear, and then gain access to oxygen. After absorbing oxygen, sulfuric acid decomposition. Borneol fragments containing 65-85%, isobornyl 5-8%.
purposes : widely used in preparation rosemary, lavender-type flavor, such as, toothpaste, powder and other cosmetic applications lot for soap, solvents and indoor spray and the Mexican flavoring agent. Is religion (Hinduism) on the cloud spices. Borneol slightly cold, Pungent, Tongqiao, San Yu fire, the withdrawal pain Function shade, there is medicine for stroke, epilepsy scared, Inflammation of the Throat tooth pain, ulcers Aphtha carbuncle, more pills into powder. Common adverse reactions are nausea, vomiting, confusion, dizziness, cramps, etc..
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