Browsing by Author "Shukla, B.K."
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Item Adaptation of the bitartrate method for the estimation of potassium in sea bittern(2011-11-24T05:33:52Z) Shukla, B.K.; Mehta, D.J.Several workers have attempted to work out the best conditions for the application of the bitartrate method for the estimation of potassium. the difficulties encountered in the bitartrate method are:(1) slowness of precipitation,(2) incomplete precipitation of potassium bitartrate especially in presence of magnesium ions,(3) limitations of accuracy due to the slight solubiliy of potassium bitartrate in water. MEURICE2, using sodium hydrogen tartrate as precipitant foound that it was necessary to leave the reactants together overnight.CLARKE and DAVIDSON1 found that a considerable excess of sodium hydrogen tartrate was necessary for complete precipitation of potassium salt, especially in presence of magnesium sulphate. too large an excess of sodium hydrogen 23*Item Catalysis of hydrogen peroxide hydriodic acid reaction by tungstate ions(2011-11-22T06:22:37Z) Ramanjaneyulu, J.V.S.; Shukla, B.K.Item Hydrated calcium silicate from marine gypsum(2011-11-24T07:26:13Z) Pandya, V.P.; Shukla, B.K.; Mehta, D.J.Gypsum as a source of the preparation of hydrated calcium sllicate has not received any attention so far although it presents certain advantages over calcium chloride as the starting materials, particulariy in regard to its cost, handling, purification and storage. in india, marine gypsum is obtained as a byproduct in the solar-salt industry. a factory producing 100,000 tons of salt can recover about 5000 tons of gypsum.Item Inorganic complexes in volumetric analysis - part I Use of ferric oxalae complex in the estimation of iodide(2011-11-22T07:13:07Z) Ramanjaneyulu, J.V.S.; Shukla, B.K.The formation of inorganic complexes in solution has been made use of both in the qualitative and quantitative analysis. Chemical literature affords numerous instances in which this phenomenon of complex formation has been used in analytical chemisty both in the formulation of analytical procedures as well as in the separation of elements of in the formation of coloured compounds used as indicators. This paper described the use of ferric oxalate complex in the formulation of a new method for the estimation of iodides.Item Inorganic complexes in volumetric analysis - part II Use of phosphate complex in the estimation of iodide(2011-11-22T07:33:55Z) Ramanjaneyulu, J.V.S.; Shukla, B.K.In part I of this series was described the formulation of a new method of estimation of iodide, using ferric oxalate complex. In this paper it is shown that ferric phosphate complex could be successfully used in place of the ferric oxalate complex in the above method with excellent results.Item Inorganic complexes in volumetric analysis. part III. use of ferric fluoride complex in the estimation of iodide(2011-11-25T05:08:55Z) Ramanjaneyulu, J.V.S.; Shukla, B.K.Effect of varying the concentration of sodium fluoride This shows that amount of sodium fluoride most be about 15-20 times that the amount of ferric iron for forming the stable complex, which does not break within half an hour when the overall acid concentration is 0.32 N and overall iodide concentration is 0.01 N.Item Iodized salt(2011-11-30T06:56:31Z) Ramanjaneyulu, J.V.S.; Shukla, B.K.Item Manufacture of free-flowing table salt(2011-11-23T11:52:49Z) Mehta, D.J.; Shukla, B.K.Optimum conditions have been worked out for preparing freeflowing table salt marine salt. the process involves puriflcation of the salt with lime and soda ash and crystallization under controlled conditions so as to produce grains of size and shape conducive to the free-flowing quality. coating the salt with a drier and paraffin wax insures this property under varying climatic conditions. cost estimates indicate that a one-ton-per-day plant would give a 21.5 per cent return on investment.Item A New Method of Estimation of Iodides(2011-11-22T06:52:45Z) Ramanjaneyulu, J.V.S.; Shukla, B.K.The Reaction Between Chromic Acid and hydriodic acid has been employed in devising a method for the estimation of iodides in iodized salt. This reaction is show at low concentrations of dichromate (0.01-0.001N) but is catalysed by oxalate ions1. scince this reaction is stoichiometric with respect to both chromate and iodide, iodine is quantitatively liberated,if chromate is taken in excess. The excess dichromate is reduced by the addition of excess of ferrous ammonium sulphate and the ferric iron formed is removed by the addition of a large excess of oxalate2 which also catalyses the reaction between dichromate and hydriodic acid.Item Production of light basic magnesium carbonate(2011-11-24T05:46:37Z) Kappanna, A.N.; Shukla, B.K.; Mehta, D.J.light basic magnesium carbonate has been produced from sea bitterns a process developed at the intitute, the process is economical, the cost of the product being at least 35'/lower than the current market price of Rs 1200 per ton.Item Pure megnesium chloride from marine bittern(1963) Mehta, Mukul J.; Shukla, B.K.; Mehta, D.J.Item Pure magnesium hydroxide by electrolysis of aqueous magnesium chloride(1968) Chauhan, D.A.; Shukla, B.K.; Datar, D.S.Item Removal of impurity from megnesium choride(csmcri bhavnagar, 1969) Mehta, M.J.; Shukla, 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 Sorel cement(2011-12-15T11:27:08Z) Shukla, B.K.Item Utilization of mixed salt from marine bittern(2011-11-24T10:35:19Z) Kappanna, A.N.; Shukla, B.K.; Mehta, D.J.A integrated process for utilizing the mixed salt crystallizing out from marin bittern for the production of light basic magnesium carbonate with subsequent recovery of sodium sulphate, sodium chloride and potassium chloride has been described. on an average, 100kg. of the mixed salt are found to yield 20kg.of basic magnesium carbonate, 14kg.of sodium sulphate,20kg. of sodium chloride and 13kg. of potassium chloride. the process offers scope for economic production of the on a commercial scale.