• M A Ittyachan

      Articles written in Journal of Chemical Sciences

    • Role of adsorption on the growth of barium and lead tartrate crystals in silica gels

      M Abdulkhadar M A Ittyachan

      More Details Abstract Fulltext PDF

      Barium and lead tartrate crystals were grown in silica gel by single diffusion method. At basic pH values, barium tartrate is precipitated as a white column of colloidal particles. This column appears to move down with increasing thickness. Finally crystals develop at the expense of this white column. Lead tartrate also is initially precipitated as a column of colloidal particles in the gel. On adding acetic acid or tartaric acid over the gel, this column transforms into dendrites and later into single crystals. The development of crystals from colloidal precipitate has been explained on the basis of adsorption.

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