Ammonium Ferrous Sulphate – 500 gram Packs

Ammonium Ferrous Sulphate, commonly known as ferrous ammonium sulphate or Mohr’s salt, is an inorganic double salt containing ammonium ions, ferrous ions (Fe²⁺), and sulphate ions. The laboratory reagent is commonly supplied as the hexahydrate, with the chemical formula (NH₄)₂Fe(SO₄)₂·6H₂O. It typically occurs as pale green to blue-green crystals and dissolves in water, forming solutions suitable for various analytical chemistry procedures. Its relatively stable ferrous iron content makes it particularly useful in redox titrations, including permanganate titrations, and in experiments involving oxidation-reduction reactions. Ammonium Ferrous Sulphate is widely relevant to educational chemistry practicals, quantitative analysis, and research involving iron chemistry. The 500 gram pack provides a practical format for laboratory reagent procurement. The exact chemical form, grade, and specifications should be confirmed to ensure suitability for the intended analytical or experimental procedure.

Product Specifications

Specification	Details
Appearance	Pale green crystalline powder
Assay	99%
Chemical Name	Ammonium Ferrous Sulphate Hexahydrate
Alternate Names	Ferrous Ammonium Sulphate Hexahydrate, Mohr’s Salt, Ammonium Iron(II) Sulphate Hexahydrate, Ferrous Diammonium Disulphate Hexahydrate
Molecular Formula	(NH₄)₂Fe(SO₄)₂·6H₂O
Empirical Formula	H₂₀FeN₂O₁₄S₂
CAS Number	7783-85-9
Molecular Weight	392.14 g/mol
Grade	LR Laboratory Reagent

Key Features of Ammonium Ferrous Sulphate Hexahydrate

• Defined double-salt composition: Contains ammonium, ferrous iron, and sulphate ions in a well-defined crystalline hydrate form.
• Characteristic crystalline appearance: Typically presents as pale green to blue-green crystals or crystalline powder.
• Useful redox chemistry: Supplies Fe²⁺ ions for oxidation-reduction reactions and suitable quantitative analytical procedures.
• Water solubility: Dissolves in water, supporting preparation of reagent solutions for laboratory experiments and titrations.
• Educational and analytical relevance: Supports quantitative chemistry practicals and iron-related investigations when its grade and specifications meet the method requirements.

Laboratory Applications of Ammonium Ferrous Sulphate Hexahydrate

• Permanganate titrations: Used as a reducing agent in suitable redox titrations involving potassium permanganate to determine concentrations under prescribed acidic conditions.
• Quantitative analytical chemistry: Supports volumetric analysis and the standardization or verification of oxidizing solutions when the selected method specifies its use.
• College chemistry practicals: Used in supervised experiments demonstrating oxidation-reduction reactions, equivalent relationships, and quantitative chemical calculations.
• Iron chemistry investigations: Provides ferrous ions for studies of iron(II) reactions, oxidation to iron(III), and related inorganic chemistry.
• Research laboratory solution preparation: Used to prepare aqueous ferrous ammonium sulphate solutions for appropriate experimental procedures, with attention to acidity, oxidation, and the method’s concentration requirements.

Why Choose Lab Wale to Buy Ammonium Ferrous Sulphate

Lab Wale provides a sourcing option for laboratory chemicals and scientific supplies used by schools, colleges, universities, research centres, and analytical laboratories. When purchasing Ammonium Ferrous Sulphate, laboratories should verify the chemical form, stated grade, pack size, and available technical and safety information. The 500 gram pack is suitable for institutional procurement where this reagent is required for practical work, titrations, or research. Selecting the appropriate specifications helps ensure compatibility with the intended analytical method and laboratory requirements.

Frequently Asked Questions About Ammonium Ferrous Sulphate

What is Ammonium Ferrous Sulphate used for in laboratories?

Ammonium Ferrous Sulphate Hexahydrate is commonly used in redox titrations, quantitative analysis, and experiments involving iron(II) chemistry. It acts as a reducing agent in suitable acidic titration procedures, including those using potassium permanganate. Its suitability depends on the selected method and required reagent specifications.

What are the molecular formula and molecular weight of Ammonium Ferrous Sulphate?

The commonly supplied hexahydrate has the formula (NH₄)₂Fe(SO₄)₂·6H₂O and a molecular weight of approximately 392.14 g/mol. The six water molecules are part of its crystalline composition. The anhydrous compound has a different formula mass, so the hydrate form must be identified correctly for accurate calculations.

What is the CAS number of Ammonium Ferrous Sulphate Hexahydrate?

The CAS Registry Number for Ammonium Ferrous Sulphate Hexahydrate, also called Mohr’s salt, is 7783-85-9. The anhydrous compound is associated with CAS number 10045-89-3. Distinguishing these forms is important when checking chemical inventories, selecting reagents, and calculating molar concentrations.

Why is Mohr’s salt used in redox titrations?

Mohr’s salt supplies ferrous ions that react quantitatively with suitable oxidizing agents under controlled conditions. Its crystalline double-salt form is comparatively stable in storage when properly maintained, making it useful for preparing solutions for redox analysis. The solution’s acidity and concentration should follow the validated analytical procedure.

How should Ammonium Ferrous Sulphate be stored and handled?

Store the crystals in a tightly closed, clearly labelled container in a cool, dry place, protected from moisture and contamination. Wear suitable gloves and eye protection, avoid generating dust, and prevent contact with the eyes and skin. Follow the current Safety Data Sheet and laboratory procedures for preparing solutions, managing spills, and disposing of chemical waste.

Storage Conditions for Ammonium Ferrous Sulphate Hexahydrate

Store Ammonium Ferrous Sulphate Hexahydrate in a tightly closed, compatible, clearly labelled container in a cool, dry, well-ventilated area. Protect it from moisture, contamination, and excessive heat. Keep the material away from incompatible chemicals identified in the applicable Safety Data Sheet. Proper storage helps maintain reagent quality and reduces unwanted oxidation of ferrous iron during handling and storage.

Precautions for Handling Ammonium Ferrous Sulphate Hexahydrate

Review the current Safety Data Sheet before use and wear suitable laboratory gloves, protective clothing, and safety goggles. Avoid generating or inhaling dust and prevent contact with the eyes and skin. Use appropriate ventilation when weighing or transferring the crystals, and clean spills using approved laboratory procedures. Avoid uncontrolled mixing with incompatible chemicals and dispose of solutions and residues according to institutional rules and applicable environmental regulations.