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Sodium silicate sand, commonly known as water glass sand, is a mixture of silica sand and sodium silicate solution. One of its key advantages is its ability to create thin molds without the need for a binder with organic components. Sodium silicate sand is typically used in conjunction with carbon dioxide (CO2) to harden the mold, making it an efficient choice for intricate and delicate components. Its resistance to high temperatures makes it suitable for casting aluminum and other non-ferrous metals.