THE ROLE OF C-METHYL-4,10,16,22-TETRAMETOXY CALIX[4]ARENE AS INHIBITOR OF CALCIUM CARBONATE (CaCO3) SCALE FORMATION

Suharso Suharso (Department of Chemistry, Faculty of Mathematic and Natural Sciences, University of Lampung, Indonesia Jl. Soemantri Brojonegoro No. 1, Bandar Lampung, Indonesia)
Buhani Buhani (Department of Chemistry, Faculty of Mathematic and Natural Sciences, University of Lampung, Indonesia Jl. Soemantri Brojonegoro No. 1, Bandar Lampung, Indonesia)
Tati Suhartati (Department of Chemistry, Faculty of Mathematic and Natural Sciences, University of Lampung, Indonesia Jl. Soemantri Brojonegoro No. 1, Bandar Lampung, Indonesia)

Indonesian Journal of Chemistry
Vol 9, No 2 (2009)

The role of C-methyl-4,10,16,22-tetrametoxy calix[4]arene as inhibitor of calcium carbonate scale formation has been investigated. The result shows that C-methyl-4,10,16,22-tetrametoxy calix[4]arene inhibits a formation of calcium carbobate crystals at a concentration of growth solution of 0.1 M. The ability of C-methyl-4,10,16,22-tetrametoxy calix[4]arene as inhibitor of the formation of calcium carbobate scale is 33-100% in inhibiting growth rate of CaCO3 scale formation. This ability depends on the concentration of C-methyl-4,10,16,22-tetrametoxy calix[4]arene added into growth solution. However, the addition of C-methyl-4,10,16,22-tetrametoxy calix[4]arene at a range of 10-100 ppm is a much enough in inhibiting the growth rate of CaCO3 crystals.