Skip to Content
Merck
All Photos(2)

Documents

677418

Sigma-Aldrich

Hydroxyapatite

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

Synonym(s):

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

Sign Into View Organizational & Contract Pricing
All Photos(2)

About This Item

Linear Formula:
[Ca5(OH)(PO4)3]x
CAS Number:
12167-74-7
Molecular Weight:
502.31
EC Number:
235-330-6
MDL number:
MFCD00010904
UNSPSC Code:
12352302
PubChem Substance ID:
24885371
NACRES:
NA.23

Assay

≥97%

form

nanopowder
solid

surface area

>9.4 m2/g

particle size

<200 nm (BET)

mp

1100 °C (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

Looking for similar products? Visit Product Comparison Guide

General description

Hydroxyapatite(HA) belongs to the family of Ca apatite which resembles natural bone in both structure and chemical composition. It can be prepared by various techniques such as chemical precipitation, hydrothermal, electrospinning, and self-propagating combustion. It is widely used as an implant material for bone regeneration, a drug carrier, and a gene delivery system due to its bioactive and biocompatible nature.

Application

Nanoscale hydroxyapatite particles can be used to prepare bone tissue engineering materials due to their slow biodegradability in situ, good osteoconductive and osteoinductive capabilities.

Poly (sodium 4-styrene sulfonate)-modified hydroxyapatite nanoparticles can be used as a drug carrier for vancomycin. Hydroxyapatite nanoparticles control the release of antibiotics after the implantation of a scaffold in the body.

Porous hydroxyapatite microspheres exhibit a high adsorptive capacity for heavy metals and can be used for the treatment of heavy metal contaminated water.

Features and Benefits

  • Bioactive and biocompatible
  • Good mechanical strength
  • Porous structure
  • Osteoconductive and osteointegrative properties

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

Certificates of Analysis (COA)

Search for Certificates of Analysis (COA) by entering the products Lot/Batch Number. Lot and Batch Numbers can be found on a product’s label following the words ‘Lot’ or ‘Batch’.

Already Own This Product?

Find documentation for the products that you have recently purchased in the Document Library.

Visit the Document Library

Sang-Soo Kim et al.
Biomaterials, 27(8), 1399-1409 (2005-09-20)
Biodegradable polymer/bioceramic composite scaffolds can overcome the limitations of conventional ceramic bone substitutes such as brittleness and difficulty in shaping. However, conventional methods for fabricating polymer/bioceramic composite scaffolds often use organic solvents (e.g., the solvent casting and particulate leaching (SC/PL)
Michiko Sato et al.
Biomaterials, 27(11), 2358-2369 (2005-12-13)
In order to improve orthopedic implant performance, the objective of this in vitro study was to synthesize nanocrystalline hydroxyapatite (HA) powders to coat titanium. HA was synthesized through a wet chemical process. The precipitated powders were either sintered at 1100
Influence of temperature, ripening time and calcination on the morphology and crystallinity of hydroxyapatite nanoparticles.
Pang YX, et al.
J. Eur. Ceram. Soc., 23(10), 1697-1704 (2003)
Hydroxyapatite nanoparticles: a review of preparation methodologies
Ferraz MP, et al.
Journal of Applied Biomaterials & Biomechanics : JABB, 2(2), 74-80 (2004)
Liam M Grover et al.
Biomaterials, 34(28), 6631-6637 (2013-06-12)
Pyrophosphate ions are both inhibitors of HA formation and substrates for phosphatase enzymes. Unlike polyphosphates their hydrolysis results simultaneously in the complete loss of mineral formation inhibition and a localised elevation in orthophosphate ion concentration. Despite recent advances in our
View All Related Papers

Articles

Nanomaterials for Biomedical Applications

Nanomaterials for Biomedical Applications

Innovative Materials for Glass Ionomer Cements (GICs): Dental Applications

Innovation in dental restorative materials is driven by the need for biocompatible and natural-appearing restoration alternatives. Conventional dental materials like amalgam and composite resins have inherent disadvantages.

Strategy for Toxicity Screening of Nanomaterials

A key challenge for nanomaterial safety assessment is the ability to handle the large number of newly engineered nanomaterials (ENMs), including developing cost-effective methods that can be used for hazard screening.

Our team of scientists has experience in all areas of research including Life Science, Material Science, Chemical Synthesis, Chromatography, Analytical and many others.

Contact Technical Service