Catalog Number
ACM10101390
Product Name
Calcium silicate
Category
Solution Deposition Precursors
Synonyms
SILICIC ACID CALCIUM SALT;VANFRE IL-2;VANSIL W-20;VANSIL W30;VANSIL(R) G;VANSIL(R) W10;VANSIL W-10;CALCIUM SILICATE
Description
Wollastonite appears as white or slightly cream-colored powder. pH (aqueous slurry) 8.0 to 10.0. (NTP, 1992);DryPowder; PelletsLargeCrystals, OtherSolid;DryPowder
IUPAC Name
calcium;dioxido(oxo)silane
Molecular Weight
116.16g/mol
Canonical SMILES
[O-][Si](=O)[O-].[Ca+2]
InChI
InChI=1S/Ca.O3Si/c;1-4(2)3/q+2;-2
InChI Key
OYACROKNLOSFPA-UHFFFAOYSA-N
Melting Point
2804 °F (NIOSH, 2016)
Density
2.1 at 77 °F (NTP, 1992);CaSiO3 species: 2.92
Solubility
less than 1 mg/mL at 70° F (NTP, 1992);Practically insol in water
Application
Calcium silicate serves a diverse range of industrial and commercial purposes due to its unique properties. Primarily, it functions as an anticaking agent, effectively enhancing the flowability of products like salt and baking powders, even under high humidity conditions. This compound, typically found in both crystalline and amorphous forms, consists of various combinations of calcium oxide and silica, such as tricalcium silicate and dicalcium silicate. Beyond food applications, calcium silicate is essential in the production of building materials, acting as a crucial component in cement clinker. Additionally, it is utilized in the pharmaceutical industry to ensure the free flow of products by absorbing moisture, as well as serving as a filler aid and antacid in oral pharmaceuticals. Its versatility extends to high-temperature insulation materials, replacing asbestos safely, and is also used in cosmetics and agricultural pesticides, among other applications.
Color/Form
White to brown, red, gray, yellow solid; vitreous to pearly luster;White monoclinistic crystals
Covalently-Bonded Unit Count
2
EC Number
233-250-6;237-772-5
Exact Mass
115.924261g/mol
MeSH Entry Terms
Ca2SiO4;calcium silicate;calcium silicate (CaSiO3);calcium silicate, CaH2SiO3 (1:1) salt;mesoporous amorphous calcium silicate;mineral wool;pseudowollastonite;Wollastonite;xonotlite
Monoisotopic Mass
115.924261g/mol
Other Experimental
Mohs hardness: 4.5-5, density: 2.8-2.9
Refractive Index
INDEX OF REFRACTION: 1.616-1.640 (ALPHA), 1.628-1.650 (BETA), 1.631-1.653 (GAMMA);Ave index of refraction: 1.63
Vapor Pressure
0 mm Hg (approx) (NIOSH, 2016)