• S J Arulraj

      Articles written in Journal of Chemical Sciences

    • Excess volumes of the binary mixtures 1,2-dichloroethane †n-alkanols [C2−C6]

      X Rosario Rajkumar K V Raman S J Arulraj

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      Volume changes on mixing of binary systems formed by 1,2-dichloroethane andn-alcohols, namely, ethanol,n-propanol,n-butanol,n-pentanol andn-hexanol were measured as a function of composition at 30, 35, 40 and 45 °C. At all compositions theVE values are all positive for all systems. The molar excess volumes of mixing for equimolar mixtures increase as the length of carbon chain increases.VE becomes more positive on increasing temperature. The positive value of the excess volume has been attributed to breaking of hydrogen bonds of associated species of alcohol by dilution with 1,2-dichloroethane.

    • Pyrolysis of aromatic acetals overγ-alumina

      N Xavier S J Arulraj

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      When aromatic acetals in vapour phase were passed over alumina (γ-Al2O3), the product mixture was found to contain ester, ether and aldehyde of aromatic nature. Activatedγ-Al2O3 exhibits Lewis acid-base properties at elevated temperatures. Possible mechanisms for the formation of the above products, consistent with experimental observation have been suggested.

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