COMAR CRM FACTSHEET

PT NAME

Trust

CRM of Hydroxyapatite - a     MRC 7966 from Inmetro

Material

Hydroxyapatite - a

Properties

Property	Property Value	Unit
	39.9 ± 1.1	%
	18.44 ± 0.90	%

1 - 2

Properties in bold italic are only indicative

Remarks

Cm Remarks

To ask this CRM send an e-mail to mrc-solicitacao@inmetro.gov.br, This Certified Reference Material (CRM) consists of a white powder of hydroxyapa-te (HA) in a crystalline phase with anisotropic morphology (HA-a), synthesized from the reaction between calcium nitrate tetrahydrate and diammonium hydrogen phosphate. The calcium to phosphorus (Ca/P) molar ratio of this CRM is consistent with the theoretical molar ratio of 1.67 and the stoichiometric composition of hydroxyapa-te with the chemical formula of Ca10 (PO4 )6 (OH)2 . Each unit of this CRM consists of a vial of approximately 2 g of HA-a powder.

Intended use

Cm Use

This CRM is intended for use in quality control and method development and validation for
measuring the physical and chemical properties of apatites with biological, geological or synthetic
origin. The commutativity of this CRM has not been evaluated.

Producer

Full name

INMETRO - Instituto Nacional de Metrologia, Qualidade e Tecnologia

Address

Av N Sra das Graças 50 Xerém D. Caxias, RJ, Brasil, CEP 25250-020

Country

Brazil

Website

Webshop

ct-mrc@inmetro.gov.br

Trust indicators

Inmetro lists 52 materials on COMAR, of which

      52 materials are accompanied by a certificate cf. ISO 17034

       52 materials are linked to statutory activities as an NMI or a DI

       0 materials have been produced under a valid ISO 17034 accreditation (N/D | N/D)

Ask the coordinator

If you find any mistakes please contact the RM Producer, ct-mrc@inmetro.gov.br
ID: 517804 | Last revision: 2025-01-27 | Direct link to this Fact sheet

COMAR REGION