21041-93-0 51B9AYG60K Cobaltous hydroxide Cobalt dihydroxide Cobalt hydroxide (Co(OH)2) Cobalt(II) hydroxide Cobalt(2+) hydroxide EINECS 244-166-4 UNII-51B9AYG60K EC 244-166-4 CAS 21041-93-0

Description

The assigned purity is verified by mass-balance and quantitative NMR (qNMR) approaches, with the expanded uncertainty reported at a 95% confidence level (k=2). Batch homogeneity and stability are independently assessed for every lot.

CATO supplies 21041-93-0 51B9AYG60K Cobaltous hydroxide Cobalt dihydroxide Cobalt hydroxide (Co(OH)2) Cobalt(II) hydroxide Cobalt(2+) hydroxide EINECS 244-166-4 UNII-51B9AYG60K EC 244-166-4 (CAS 21041-93-0), a certified reference material (molecular formula H2CoO2, MW 92.95 g/mol) for analytical method development and quality control.

The molecular framework of 21041-93-0 51B9AYG60K Cobaltous hydroxide Cobalt dihydroxide Cobalt hydroxide (Co(OH)2) Cobalt(II) hydroxide Cobalt(2+) hydroxide EINECS 244-166-4 UNII-51B9AYG60K EC 244-166-4 (H2CoO2) is characterized by an inorganic composition. In reversed-phase chromatography, its retention is governed primarily by the polarity and ionization state of its functional groups, which provides a practical basis for HPLC-UV/DAD or LC-MS method development.

This reference standard is suitable for quantitative analysis on major chromatographic platforms including HPLC, GC, LC-MS/MS, and GC-MS, serving as an external calibration standard or a system suitability test reference material.

Physical & Chemical Properties

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