hydroxylapatite

Description

hydroxylapatite is identified by CAS 1306-06-5, molecular formula HCa5O13P3 and molecular weight 501.68 g/mol. UNII 91D9GV0Z28; InChIKey XYJRXVWERLGGKC-UHFFFAOYSA-D. Other Experimental Properties: Decomposes above 1100 °C.

Identification

CAS Registry Number	1306-06-5
PubChem CID	14781
Molecular formula	HCa5O13P3
Molecular weight	501.68 g/mol
IUPAC name	pentacalcium;hydroxide;triphosphate
InChIKey	XYJRXVWERLGGKC-UHFFFAOYSA-D
UNII (FDA)	91D9GV0Z28

Computed Descriptors

Molecular Weight	502.3
Hydrogen Bond Donor Count	1
Hydrogen Bond Acceptor Count	13
Rotatable Bond Count	0
Exact Mass	501.675955
Monoisotopic Mass	501.675955
Topological Polar Surface Area	260
Heavy Atom Count	21
Formal Charge	0
Complexity	36.8

Physical & Chemical Properties

Other Experimental Properties	Decomposes above 1100 °C

Physical description & handling notes

• Dry Powder
• Solid; [Merck Index] White suspension; [MSDSonline]
• Hexagonal needles arranged in rosettes
• Finely divided, crystalline, nonstoichiometric material.
• Practically insol in water, even when freshly prepared
• Density: 3.1 to 3.2 /Apatite/

Regulatory Status

Regulatory & Food Contact	CIR / INCI: Emulsion stabilizing; Bulking; Abrasive
GHS notification summary	97.8% (362 / 370)

GHS Hazard Classification

GHS notification summary	97.8% (362 / 370)

Documented Uses

• Naturally occurring mineral in phosphate rocks and in bone; [Merck Index] Used in fertilizers, laser crystals, ion-exchange chromatography (especially for proteins), artificial bone and teeth, and calcium/phosphorus supplement; [HSDB]
• Source of phosphorus & phosphoric acid; mfr of fertilizers; laser crystals /Apatite/
• USED IN DENTURE & ORTHOPEDIC MATERIALS; USED IN ION-EXCHANGE CHROMATOGRAPHY ESPECIALLY FOR PROTEINS
• Prosthetic aid (artificial bone and teeth).
• For more Uses (Complete) data for HYDROXYAPATITE (6 total), please visit the HSDB record page.
• Plastics -> Typical concentration range in plastic materials -> 5%

Synonyms

Durapatite; 1306-06-5; Calcium hydroxyapatite; Radiesse; Monite; Win 40350; Apatite, hydroxy; Calcium hydroxylapatite; Supertite 10; Calcium phosphate hydroxide; Calcium orthophosphate, basic; Hydroxylapatite (Ca5(OH)(PO4)3); Pentacalcium monohydroxyorthophosphate; Interpore200; Interpore500; 215-145-7

Frequently Asked Questions

What are the CAS number and molecular formula of hydroxylapatite?

CAS 1306-06-5; molecular formula HCa5O13P3; molecular weight 501.68 g/mol.

What other names is hydroxylapatite known by?

Durapatite, 1306-06-5, Calcium hydroxyapatite, Radiesse, Monite, Win 40350.

What is the regulatory status of hydroxylapatite?

Documented regulatory listings: CIR / INCI: Emulsion stabilizing; Bulking; Abrasive.

Is hydroxylapatite classified as hazardous?

97.8% of GHS notifications report no hazard classification (362 of 370).

What are the key physical properties of hydroxylapatite?

Other Experimental Properties: Decomposes above 1100 °C.

Facts on this page are taken from PubChem (US National Library of Medicine) and Wikidata. Grade-specific data — assay, moisture, particle size, packaging, shelf life — is issued per batch on the COA and is not published here.