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Key Documents

693863

Sigma-Aldrich

Hydroxyapatite

nanopowder, <200 nm particle size (BET), contains 5 wt. % silica as dopant, synthetic

Synonym(s):

Calcium phosphate tribasic, Si-HAp, Calcium hydroxyphosphate, HAp, Hydroxylapatite, Tribasic calcium phosphate

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About This Item

Linear Formula:
[Ca5(OH)(PO4)3]x
CAS Number:
Molecular Weight:
502.31
MDL number:
UNSPSC Code:
12352302
PubChem Substance ID:
NACRES:
NA.23
form:
nanopowder
solid

Quality Level

form

nanopowder
solid

contains

5 wt. % silica as dopant

surface area

10-15 m2/g , typical

particle size

<200 nm (BET)

mp

1100 °C (lit.)

bulk density

2‑6 g/cm3

SMILES string

[Ca++].[Ca++].[Ca++].[Ca++].O[Ca+].[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O

InChI

1S/5Ca.3H3O4P.H2O/c;;;;;3*1-5(2,3)4;/h;;;;;3*(H3,1,2,3,4);1H2/q5*+2;;;;/p-10

InChI key

XYJRXVWERLGGKC-UHFFFAOYSA-D

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Application

Si-substituted hydroxyapatite (Si-HAp) nanopowder can be incorporated in biodegradable polymer composites or deposited on biocompatible surfaces similar to pure HAp nanopowder (cat. no. 677418). Biological activity of HAp was shown to be enhanced by substitution of silicon ions into a fraction of HAp lattice phosphate sites.

Legal Information

Product of Engi-Mat Co.

Storage Class Code

13 - Non Combustible Solids

WGK

WGK 1

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

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