Ferroin Oxidation-Reduction Indicator (1,10-Phenanthroline Ferrous Sulfate)

Features:

• Exceptional Sensitivity: The transition from the deeply colored tris(1,10-phenanthroline)iron(II) complex to the nearly colorless iron(III) state provides a sharp visual cue, reducing titrant overshooting and analyst error
• Stable Reduction Potential: With a standardized potential of 1.06 V, it is perfectly suited for use with Cerium(IV) sulfate or potassium dichromate titrants
• COD Analysis Standard: Essential for environmental laboratories performing Chemical Oxygen Demand tests, where it indicates the titration of excess dichromate with Ferrous Ammonium Sulfate (FAS)
• High Chemical Purity: Manufactured to eliminate trace impurities that could cause "endpoint drifting" or premature color shifts

Safety & Storage Information:

• Chemical Irritant: Ferroin solution may cause irritation to the skin, eyes, and respiratory tract.
• Personal Protection: Wear nitrile gloves, safety splash goggles, and a protective lab coat. Use in a well-ventilated area.
• Storage: Store at controlled room temperature (15°C to 30°C) in the original container. Keep the cap tightly sealed to prevent evaporation or oxidation from ambient air.
• Interference: Avoid contact with strong bases, which can cause the iron complex to precipitate, rendering the indicator ineffective.