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FAS Indicator 5%

w/v in 1% v/v Nitric Acid
Item # F1014
Weight N/A
Dimensions N/A
Available Size(s)

100mL

Manufacturer

Packaging Type

Glass w/ Dropper

Safety Data Sheet View/Download SDS
Sample COA View/Download Sample COA

Ready-to-use reagent. Prepared with ACS Ferric Ammonium Sulfate, Dodecahydrate, Nitric Acid and high purity water. Suitable for laboratory use.

Product Overview

This FAS Indicator is a 5% solution of ferric ammonium sulfate (FAS) prepared in 1% nitric acid, formulated specifically for use in redox titrations, particularly those involving ceric sulfate or potassium dichromate. The nitric acid acts as a stabilizing medium, preventing premature hydrolysis and maintaining the reactivity and clarity of the indicator solution.

The FAS Indicator functions as a redox-active reagent that undergoes a distinct color change during titration, helping to identify the endpoint with precision. It is widely used in quantitative analysis of reducing agents and in standardization of oxidizing solutions.

Key Features:

  • 5% ferric ammonium sulfate in 1% nitric acid
  • Designed for accurate redox titration endpoints
  • Stable, ready-to-use liquid formulation
  • Compatible with strong oxidizers like ceric sulfate and dichromate
  • Provides sharp, visible endpoint detection

Applications:

  • Redox titrations in analytical chemistry
  • Standardization of oxidizing solutions
  • Determination of reducing agents in environmental and industrial samples
  • Inorganic and coordination chemistry education
  • Routine quality control testing involving redox systems

This FAS Indicator offers consistent performance and easy handling for laboratories requiring reliable endpoint detection in oxidative-reductive analysis.

 

Synonyms
Ammonium Iron (III) Alum - Nitric Acid Solution Iron (III) Ammonium Sulfate - Nitric Acid Solution Ferric Ammonium Sulfate, Dodecahydrate

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