Perlite rock

Naturally occurring siliceous rock of light grey, odourless, clay-like and dusty. A form of natural glass. Moisture content: 0.5% -1%. Used for applications in the construction (e.g., as a loose-fill insulation in masonry construction), horticultural (e.g., as a component of soilless growing mixtures) and industrial (e.g., high performance fillers for plastics to cements for petroleum, water etc) sectors. Bulk density: 943-1,020 kg/m3.
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