Browsing by Author "Vaidya, M.C."
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Item Antacid magnesium compounds(2011-12-15T09:54:58Z) Vaidya, M.C.; Skukla, B.K.Item calcination studles of oyster shelis(csmcri bhavnagar, 1980) Chauhan, D.A.; Vaidya, M.C.Item Preparation of heavy basic magnesium carbonate(2011-11-30T05:02:28Z) Vaidya, M.C.; Tipnis, U.K.; Mehta, P.R.Item Process for pharmaceutical grade light magnesium trisilicate(National research council(U.S.), 1966) Vaidya, M.C.; Sukla, B.K.Item Sodium chloride A.R. & B.P. from marine salt(2011-11-23T04:34:10Z) Mehta, D.J.; Shukla, B.K.; Vaidya, M.C.The major impurities in marine salt are magnosium sulphate,magnesium chloride and calcium sulphate.the manufacture of analar and british pharmacopoeia (R.P.) grade sodium chloride must involve the quantitative removal of all the impurities from salt. various methods have been described for the removal of calcium, magnesium and sulphate ions. in one method , calcium and magnesium are removed by treatment with disodium hydrogen phosphate and sodium carbonate, followed by the elimination of sulphate ions by barium chloride.in another method barium chloride is used to precipitate sulphate ions: hydrogen peroxide is employed to oxidise iron, and sodium carbonate, to remove alkaline earth metals. the ph is then adjusted to 6.5 to ramove aluminium, magnesium and silicon compounds, followed by fractional crystallisation to obtain pure sodium chloride pure sodium chloride is olso obtained by the treatment of saturated salt solution with chlorine, followed by two successive precipitations by hydrochloric acid, and fusion of air dried product.Item Studies on some adsorbent magnesium compounds(csmcri bhavnagr, 1970) Vaidya, M.C.