NIST660C

Line position and line shape standard for powder diffraction

NIST^® SRM^® 660c, Lanthanum hexaboride powder

• Synonym(s): Lanthanum hexaboride, Lanthanum boride
• Linear Formula: LaB₆
• CAS Number: 12008-21-8
• Molecular Weight: 203.77
• EC Number: 234-531-6
• MDL number: MFCD00151350
• UNSPSC Code: 41116107
• PubChem Substance ID: 329818766
• NACRES: NA.24

Properties

• grade: certified reference material
• Quality Level: 100
• form: powder
• packaging: pkg of 6 g
• manufacturer/tradename: NIST^®
• technique(s): diffraction/scattering: suitable
• mp: 2210 °C
• density: 2.61 g/cm³ at 25 °C (lit.)
• SMILES string: [La++].B12B3[B-]14B5B4[B-]235
• InChI: 1S/B6.La/c1-2-5(1)3-4(5)6(1,2)3;/q-2;+2
• InChI key: VJXOKIULCJPJLW-UHFFFAOYSA-N

Description

General description

The SRM was prepared in a dedicated processing run using the ¹¹B isotope enriched to a nominal 99 % concentration. This isotopic enrichment renders this SRM relevant to the neutron diffraction community. The resulting powder was then annealed and bottled under argon. Certification was performed using data from a NIST-built diffractometer, with analyses via the fundamental parameters approach (FPA) using the Rietveld method. The certification of SRM 660c is valid indefinitely, provided the SRM is handled and stored in accordance with the instructions given in the “Instructions for Storage and Use”.

For more information, please refer to the COA and SDS.

SRM 660C_CERT

SRM 660C_SDS

Application

This Standard Reference Material (SRM) is intended for use in calibration of diffraction line positions and line shapes determined through powder diffractometry.

Features and Benefits

• A unit of SRM 660c consists of approximately 6 g of lanthanum hexaboride, LaB₆, powder bottled under argon gas
• Information on product description, disposal, and transportation is available in the accompanying MSDS
• The enclosed NIST certificate contains details on the expiry date, warning to users, instructions for right storage and use, preparation, and analysis of the RM
• Certified values and uncertainties calculated according to the method described in the ISO/JCGM Guide
• Metrological traceability is to the SI unit for length (expressed as nanometers)

Other Notes

Certified for the analytes listed below.
Lanthanum Hexaboride Powder

See certificate for values and more details at nist.gov/SRM.

Legal Information

NIST is a registered trademark of National Institute of Standards and Technology

SRM is a registered trademark of National Institute of Standards and Technology

Safety Information

• Storage Class: 13 - Non Combustible Solids
• wgk_germany: WGK 3
• flash_point_f: Not applicable
• flash_point_c: Not applicable