An insoluble, decomposed Silica, brownish or grayish in color. It is usually used as a soft, mild abrasive, in various types of polishes, for rubbing varnished woodwork and hard rubber, and as an ingredient in the manufacturing of brake linings.
An insoluble, decomposed Silica, brownish or grayish in color. It is usually used as a soft, mild abrasive, in various types of polishes, for rubbing varnished woodwork and hard rubber, and as an ingredient in the manufacturing of brake linings.
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