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• L-Camphorsulfonic acid

  Camphor sulfonic acid includes L-camphor sulfonic acid, D-camphor sulfonic acid and racemic camphor sulfonic acid these three isomers.
  It is a kind of white columnar crystals with the melting point of 193°C (decomposition). [α]D20+24° (water). It is Slightly soluble in ethanol, insoluble in ether, soluble in sodium hydroxide and sodium carbonate solution. L-camphor sulfonic acid could be produced from reaction between camphor, sulfuric acid and acetic anhydride.It has a lot of functions such as exciting the respiratory center, the vascular movement center and myocardium. Its sodium salt plays pharmaceutical role in medicine.
  Camphor sulfonic acid sodium salt is a kind of white crystalline powder. It is odorless and tastes bitter and then sweet. It is easily absorb moisture and easily dissolve in the water and hot ethanol. So it should be shading confined preservation. it can Directly excite the medulla oblongata respiratory center and vascular movement center, and quicken and deepen the breath, rise the blood pressure; it also can directly excite the myocardium and strength the contraction of cardiac muscle as well as could increase the output.
  It is applied the treatment of infectious disease, as well as the disease like central inhibition of poisoning caused by respiratory depression, fatigue, high fever, poisoning, heat stroke and other acute heart failure.;

• Uses

  (1) It is also used for the racemization of optical isomers.
  (2) It can be applied to the resolution of intermediate or isomer in medicine.
  (3) It also could play a role as organic synthesis intermediates and resolving agent.;

• Production method

  Camphor sulfonic acid is obtained from camphor and sulfuric acid by irradiation.
  This method involves:
  1) Adding the camphor and acetic anhydride to the pot.
  2) Mixing it and making it dissolved.
  3) Dripping sulfuric acid after cooling. And the reaction should be maintained at 44-45 °C for 48 hours. Then cool it to 6-7 °C.
  4) Crystallizing, filtrating, washing with a small amount of acetic acid crystals, and dry it to get camphor sulfonic acid.;

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