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At ambient temperature, silicocalcium is a grey, metallically lustrous, odourless solid. Silicocalcium is commercially available in the form of lumps, granules and powders of different size ranges. The surface of silicocalcium is covered with silicon, calcium, iron and aluminium rich oxide phases. The solubility of silicocalcium in water is very low and it is not flammable. Main elements released from silicocalcium in different fluids are silicon and calcium. The release is significantly higher in acidic fluids than observed at neutral conditions. The release of other elements present in silicocalcium is usually low.