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Assay procedure for Ascorbic Acid

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Assay procedure for Ascorbic Acid

This article details the assay of Ascorbic acid using iodine and starch solution as indicator

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Description

Assay Procedure

  • Weigh accurately about 0.1 g and dissolve in a mixture of 100 ml of freshly boiled and cooled water and 25 ml of 1 M sulphuric acid.
  • Immediately titrate with 0.05 M iodine, using starch solution as indicator until a persistent blue-violet colour is obtained.
  • 1 ml of 0.05 M iodine is equivalent to 0.008806 g of C6H8O6.

Tags

Ascorbic acid, assay,iodine, sulphuric acid, starch solution

References

indian pharmacopoeia

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