1,2-Dibromo-4,5-dichlorobenzene CAS 73557-66-1

Description

Compared with other compounds in its class, the molecular weight of 304.79 g/mol gives 1,2-Dibromo-4,5-dichlorobenzene distinctive chromatographic separation conditions and mass-spectrometry parameter settings.

1,2-Dibromo-4,5-dichlorobenzene (CAS 73557-66-1), molecular formula C6H2Br2Cl2 and molecular weight 304.79 g/mol, is a CATO reference standard with documented purity and traceability.

1,2-Dibromo-4,5-dichlorobenzene (C6H2Br2Cl2) contains chlorine/bromine substitution, an aromatic ring system. Halogen substitution raises its density and boiling point; these physicochemical properties determine the optimal preparation and storage of its standard solutions. 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.

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.

Physical & Chemical Properties

Why CATO?

• ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
• 130,000+ catalog items in stock, COA supplied with every batch
• Worldwide shipping with full export documentation (HS code guidance available)
• Technical support: +86 18665070610 / Nicole.chen@cato-chem.com