Freon #21 CAS 75-43-4

Purity 97%+In StockPharmaceutical Standards
CAS No.75-43-4
Molecular FormulaCHCl2F
Molecular Weight102.92 g/mol
CategoryPharmaceutical Standards / API Standards
AvailabilityIn Stock

Chemical Structure

Freon #21 CAS 75-43-4 chemical structure

Description

Freon #21 (CAS 75-43-4) is a high-purity analytical reference standard with the molecular formula CHCl2F and a molecular weight of 102.92 g/mol.

Freon #21 (CHCl2F) contains fluorine/chlorine substitution. 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.

CATO manufactures Freon #21 under ISO 17034:2016 accreditation with dual CNAS and ANAB accreditation. Each batch is characterized by orthogonal methods and supplied with a full Certificate of Analysis (COA), ensuring metrological traceability.

Physical & Chemical Properties

Molecular FormulaCHCl2F
Molecular Weight102.92 g/mol
Purity97%+
StorageStore at 2-8°C, keep tightly closed to prevent evaporation
Solubility (reference)Soluble in methanol, acetonitrile, DMSO
StabilityStable under recommended storage conditions
Degree of Unsaturation (DBE)0.0
CAS Registry Year (est.)1957
Halogen ContentF/Cl-containing

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