Tetramethylphosphonium bromide CAS 4519-28-2

Description

Compared with other compounds in its class, the molecular weight of 171.02 g/mol gives Tetramethylphosphonium bromide distinctive chromatographic separation conditions and mass-spectrometry parameter settings.

Tetramethylphosphonium bromide (CAS 4519-28-2), molecular formula C4H12PBr and molecular weight 171.02 g/mol, is a CATO reference standard with documented purity and traceability.

The molecular framework of Tetramethylphosphonium bromide (C4H12PBr) is characterized by organophosphorus functionality, bromine substitution. 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. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.

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.

As a certified reference material (CRM), Tetramethylphosphonium bromide meets the metrological traceability requirements of ISO/IEC 17025 laboratories. Batch-to-batch consistency is monitored via control charts to guarantee comparable assigned values across lots.

Physical & Chemical Properties

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