Levasil® CA414 PNM is an alkaline, aqueous dispersion of colloidal silica that is 40% solids by weight. The silica dispersion is ammonia stabilized and the amorphous silica particles carry a negative surface charge. The silica particles are discrete, have a smooth, spherical shape, and are present in a narrow particle size distribution. The physical appearance of the dispersion is an opalescent liquid, slightly more viscous than water with the recognizable smell of ammonia. Levasil® CA414 PNM is produced for the European and North American markets.
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