MilliporeSigma
All Photos(3)

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

form

nanopowder
solid

contains

5 wt. % silica as dopant

surface area

10-15 m2/g , typical
BET surf. 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

Looking for similar products? Visit Product Comparison Guide

Compare Similar Items

View Full Comparison

1 of 4

This Item
677418289396924369
Hydroxyapatite nanopowder, &lt;200&#160;nm particle size (BET), contains 5&#160;wt. % silica as dopant, synthetic

Sigma-Aldrich

693863

Hydroxyapatite

Hydroxyapatite nanopowder, &lt;200&#160;nm particle size (BET), &#8805;97%, synthetic

Sigma-Aldrich

677418

Hydroxyapatite

Hydroxyapatite reagent grade, powder, synthetic

Sigma-Aldrich

289396

Hydroxyapatite

form

nanopowder, solid

form

nanopowder, solid

form

powder, solid

form

-

mp

1100 °C (lit.)

mp

1100 °C (lit.)

mp

1100 °C (lit.)

mp

-

Quality Level

100

Quality Level

100

Quality Level

100

Quality Level

100

contains

5 wt. % silica as dopant

contains

-

contains

-

contains

-

particle size

<200 nm (BET)

particle size

<200 nm (BET)

particle size

-

particle size

-

surface area

BET surf. area 10-15 m2/g (typical)

surface area

>9.4 m2/g

surface area

-

surface area

-

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

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?

Documents related to the products that you have purchased in the past have been gathered in the Document Library for your convenience.

Visit the Document Library

Difficulty Finding Your Product Or Lot/Batch Number?

Product numbers are combined with Pack Sizes/Quantity when displayed on the website (example: T1503-25G). Please make sure you enter ONLY the product number in the Product Number field (example: T1503).

Example:

T1503
Product Number
-
25G
Pack Size/Quantity

Additional examples:

705578-5MG-PW

PL860-CGA/SHF-1EA

MMYOMAG-74K-13

1000309185

(enter as 1.000309185)

Having trouble? Feel free to contact Technical Service for assistance.

Lot and Batch Numbers can be found on a product's label following the words 'Lot' or 'Batch'.

Aldrich Products

  • For a lot number such as TO09019TO, enter it as 09019TO (without the first two letters 'TO').

  • For a lot number with a filling-code such as 05427ES-021, enter it as 05427ES (without the filling-code '-021').

  • For a lot number with a filling-code such as STBB0728K9, enter it as STBB0728 without the filling-code 'K9'.

Not Finding What You Are Looking For?

In some cases, a COA may not be available online. If your search was unable to find the COA you can request one.

Request COA

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