- P-ISSN 1225-0163
- E-ISSN 2288-8985
Silicate used as laundry detergent builder was good for pH buffering capacity and solubility but calcium-ion binding capacity and surfactant adsorption ability were lower. As <TEX>$SiO_2/Na_2O$</TEX> molar ratio became higher, pH buffering capacity and ion exchange ability were lower and surfactant adsorption ability was little higher. Anionic surfactant LAS (linear alkylbenzene sulphonate), nonionic surfactant LA-9 (lauryl alcohol EO-9) were used to investigate the detergency performance. Zeolite was better than sodium silicate in detergency performance. In case of LAS, detergency performance was good when <TEX>$SiO_2/Na_2O$</TEX> molar ratio was lower. In case of LA-9, detergency performance was similar without discrimination of molar ratio of <TEX>$SiO_2/Na_2O$</TEX>.