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289396

Sigma-Aldrich

Hydroxyapatite

reagent grade, powder, synthetic

Synonym(s):
Calcium phosphate tribasic, Calcium hydroxyphosphate, HAp, Hydroxylapatite, Tribasic calcium phosphate
Linear Formula:
[Ca5(OH)(PO4)3]x
CAS Number:
Molecular Weight:
502.31
EC Number:
MDL number:
PubChem Substance ID:
NACRES:
NA.23

grade

reagent grade

Quality Level

form

powder
solid

mp

1100 °C (lit.)

solubility

H2O: insoluble(lit.)

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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This Item
677418702153574791
Hydroxyapatite reagent grade, powder, synthetic

Sigma-Aldrich

289396

Hydroxyapatite

Hydroxyapatite nanopowder, <200 nm particle size (BET), ≥97%, synthetic

Sigma-Aldrich

677418

Hydroxyapatite

Hydroxyapatite nanoparticles, dispersion, 10 wt. % in H2O, <200 nm particle size (BET)

Sigma-Aldrich

702153

Hydroxyapatite

Hydroxyapatite synthetic, 99.8% trace metals basis (excludes Mg)

Sigma-Aldrich

574791

Hydroxyapatite

grade

reagent grade

grade

-

grade

-

grade

-

form

powder, solid

form

nanopowder, solid

form

dispersion, nanoparticles

form

solid

mp

1100 °C (lit.)

mp

1100 °C (lit.)

mp

-

mp

1100 °C (lit.)

solubility

H2O: insoluble(lit.)

solubility

-

solubility

-

solubility

-

Quality Level

100

Quality Level

100

Quality Level

100

Quality Level

100

General description

Hydroxyapatite is a key inorganic phosphate that has chemical and structural resemblance to bone. HAp is a popular biomaterial which finds use as a bone or teeth replacement and repair, hard tissue repair.

Application

Hydroxyapatite(HAp) was used to model intracranial calcification in a study. HAp forms biocomposites with a number of polymers for various uses, such as:
  • for comparison purposes during the preparation of HAp based biocomposites with PVA and collagen.
  • for preparation of poly(methyl methacrylate) (PMMA)/hydroxyapatite (HA) by powder liquid method to manufacture denture base composites.

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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