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702153

Sigma-Aldrich

Hydroxyapatite

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

Synonym(s):

Calcium hydroxide phosphate, Calcium hydroxylapatite, Calcium hydroxyphosphate, Nano hydroxyapatatite, Pentacalcium hydroxide triphosphate

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About This Item

Linear Formula:
[Ca5(OH)(PO4)3]x
CAS Number:
12167-74-7
Molecular Weight:
502.31
MDL number:
MFCD00010904
UNSPSC Code:
12352302
PubChem Substance ID:
329762350
NACRES:
NA.23

form

dispersion
nanoparticles

contains

≤0.025 wt. % dispersant (non-metal based)

concentration

10 wt. % in H2O

surface area

14.3 m2/g , typical

particle size

<200 nm (BET)

pH

4-6

density

1.038 g/mL at 25 °C

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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General description

Hydroxyapatite(HAP) is an osteoconductive bioceramic material which has uniqueability to form direct bonds with living tissues. It can be easily prepared byvarious techniques such as sol-gel, hydrothermal, multiple emulsion, biomimeticdeposition, and electrodeposition.

Application

Hydroxyapatite can be used as:
  • An implant material for bone substitute due to its chemical similarity to the inorganic component of bone and osteo inductive properties.
  • A vehicle for gene and drug delivery because of its encapsulation capacity and affinity to several drugs and proteins.
  • A pH responsive particulate emulsifier.

Features and Benefits

  • Biocompatible
  • Osteoconductive
  • Stable under physiological conditions
  • High mechanical strength

Legal Information

Product of Engi-Mat Co.

Storage Class Code

12 - Non Combustible Liquids

WGK

WGK 1

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Certificates of Analysis (COA)

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Martin P Reichhardt et al.
Life science alliance, 3(4) (2020-02-27)
The scavenger receptor cysteine-rich (SRCR) family of proteins comprises more than 20 membrane-associated and secreted molecules. Characterised by the presence of one or more copies of the ∼110 amino-acid SRCR domain, this class of proteins have widespread functions as antimicrobial
Thomas Lyon et al.
The Journal of bone and joint surgery. American volume, 95(23), 2088-2096 (2013-12-07)
Recombinant human bone morphogenetic protein-2 (rhBMP-2) applied on an absorbable collagen sponge improves open tibial fracture-healing as an adjunct to unreamed intramedullary nail fixation. We evaluated rhBMP-2 and a new, injectable calcium phosphate matrix (CPM) formulation in acute closed tibial
Tie Liu et al.
Bone, 56(1), 110-118 (2013-06-05)
As an alternative to an autologous bone graft, deproteinized bovine bone (DBB) is widely used in the clinical dentistry. Although DBB provides an osteoconductive scaffold, it is not capable of enhancing bone regeneration because it is not osteoinductive. In order
Satyavrata Samavedi et al.
Acta biomaterialia, 9(9), 8037-8045 (2013-06-25)
Calcium phosphate ceramics (CPCs) have been widely used as biomaterials for the regeneration of bone tissue because of their ability to induce osteoblastic differentiation in progenitor cells. Despite the progress made towards fabricating CPCs possessing a range of surface features
W Zhang et al.
Journal of dental research, 92(12), 1136-1141 (2013-10-08)
Stem cell-based bone tissue engineering has been recognized as a new strategy for maxillary sinus floor elevation. More rapid bone formation may enhance this technique when simultaneous dental implant placement is desired. Adipose tissue-derived stem cells (ADSCs) and bone marrow
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