VWR Ferroin redox indicator solution, 1/40 mol/l, AVS TITRINORM

1,10-Phenanthroline–Ferrous Sulphate Complex | High-Accuracy Redox Titration Indicator

CAS Number: 14634-91-4 | MDL Number: MFCD00036428 | Molecular Weight: 692.54 g/mol

Chemical Formula: C₃₆H₂₄FeN₆SO₄

VWR® Ferroin (1/40 mol/L) is a certified AVS TITRINORM redox indicator solution composed of the ferrous complex of 1,10-phenanthroline and sulphate. It is widely used in redox titrations, particularly in the determination of iron, cerium, and other redox-active analytes. This ready-to-use solution offers excellent color change sensitivity and is produced under ISO 17034 quality standards, ensuring traceability and accuracy in analytical procedures.

Key Features

• Accurate 1/40 mol/L concentration for consistent titration results
• Sharp color transition from red (Fe²⁺) to pale blue (Fe³⁺) for visual endpoint detection
• Supplied in AVS TITRINORM grade with traceability to NIST standards
• Stable in aqueous solution and suitable for a wide range of oxidation-reduction analyses
• Packaged with batch-specific Certificates of Analysis and Safety Data Sheets

Specifications

Applications

• Redox Titrations – Particularly for iron(II) and cerium(IV) systems
• Analytical Chemistry – Standard endpoint indicator for oxidation-reduction reactions
• Water Analysis – Used in permanganate demand and iron determination
• Educational Labs – Demonstrates redox reactions with clear visual indicators
• Quality Control Labs – Used in routine assays requiring visual redox endpoints

Ordering Information

VWR® Ferroin redox indicator solution provides reliable, reproducible results in redox titrations and other analytical applications. Supplied as part of the TITRINORM product line, it ensures consistent quality, stability, and traceability for laboratories that demand accuracy and compliance with international standards.