Calcium silicon trioxide (wollastonite)

For research use only. Not for therapeutic Use.

  • CAT Number: M052249
  • CAS Number: 13983-17-0
  • Molecular Formula: CaO3Si
  • Molecular Weight: 116.16
  • Purity: ≥95%
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Calcium silicon trioxide (Cat No.: M052249), commonly known as wollastonite, is a naturally occurring calcium inosilicate mineral with a chain-like silicate structure. It appears as a white to gray fibrous or tabular crystal and is valued for its thermal stability, low moisture absorption, and high strength. Wollastonite is widely used as a filler in ceramics, plastics, paints, and construction materials. It also enhances mechanical properties and dimensional stability in composites and serves as a non-toxic alternative to asbestos in various industrial applications.


CAS Number 13983-17-0
Molecular Formula CaO3Si
Purity ≥95%
Storage Store at -20°C
IUPAC Name calcium;dioxido(oxo)silane
InChI InChI=1S/Ca.O3Si/c;1-4(2)3/q+2;-2
InChIKey OYACROKNLOSFPA-UHFFFAOYSA-N
SMILES [O-][Si](=O)[O-].[Ca+2]
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