Calcium silicate

[10] As verified by X-ray crystallography, calcium silicate is a dense solid consisting of tetrahedral orthosilicate (SiO44-) units linked to Ca2+ via Si-O-Ca bridges.

It is one of the most successful materials in fireproofing in Europe because of regulations and fire safety guidelines for commercial and residential building codes.

High-performance calcium-silicate boards retain their excellent dimensional stability even in damp and humid conditions and can be installed at an early stage in the construction program, before wet trades are completed and the building is weather-tight.

For sub-standard products, silicone-treated sheets are available to fabricators to mitigate potential harm from high humidity or general presence of water.

[13] Calcium silicate neutralizes active acidity in AMD systems by removing free hydrogen ions from the bulk solution, thereby increasing pH.

As its silicate anion captures H+ ions (raising the pH), it forms monosilicic acid (H4SiO4), a neutral solute.

It is "applied extensively to Everglades mucks and associated sands planted to sugarcane and rice" [18] Calcium silicate is used as an anticaking agent in food preparation, including table salt[19] and as an antacid.

It is approved by the United Nations' FAO and WHO bodies as a safe food additive in a large variety of products.

NFPA 704 four-colored diamond Health 2: Intense or continued but not chronic exposure could cause temporary incapacitation or possible residual injury. E.g. chloroform Flammability 0: Will not burn. E.g. water Instability 0: Normally stable, even under fire exposure conditions, and is not reactive with water. E.g. liquid nitrogen Special hazards (white): no code
Unit cell of Ca 2 SiO 4 . Color code: red (O), blue (Ca), gold (Si).
Calcium-silicate passive fire protection board being clad around steel structure in order to achieve a fire-resistance rating
Circuit integrity fireproofing of cable trays in Lingen/Ems, Germany using calcium-silicate board system qualified to DIN 4102. Other methods for exterior protection of electrical circuits include boards made of sodium silicate bonded and pressed vermiculite and flexible wraps made of ceramic fibre and rockwool.