Description

Ferrous Ammonium Sulfate Hexahydrate is a double salt of ferrous sulfate and ammonium sulfate, widely recognized for its role as a primary standard in analytical chemistry. This compound is valued for its high purity and stability, making it a reliable source of ferrous ions in quantitative analysis and industrial processes. It serves critical functions in water treatment, laboratory titrations, and as a nutrient supplement in agricultural and pharmaceutical formulations, meeting the needs of analytical, industrial, and life science sectors.

Application

• Analytical Chemistry Standard: Primary standard for the calibration of potassium permanganate and cerium(IV) sulfate solutions in redox titrations.
• Water & Wastewater Treatment: Used as a coagulant and reducing agent for the removal of contaminants like chromium(VI).
• Agricultural & Horticultural Use: Serves as a micronutrient fertilizer and soil amendment to correct iron deficiencies.
• Pharmaceutical & Nutritional Supplement: Source of bioavailable iron in mineral fortification and hematinic preparations.
• Laboratory Reagent: Essential reagent in qualitative and quantitative analysis, including limit tests for heavy metals.
• Chemical Synthesis: Precursor for the synthesis of other iron compounds and catalysts.
• Electroplating & Surface Treatment: Used in electroplating baths and metal finishing processes.

Basic Information

Item	Detail
Product Name	Ferrous Ammonium Sulfate Hexahydrate
CAS No.	7783-85-9
Molecular Formula	Fe(NH₄)₂(SO₄)₂·6H₂O
Molecular Weight	392.14 g/mol
Synonyms	Ammonium Iron(II) Sulfate Hexahydrate; Mohr's Salt; Ferrous Ammonium Sulfate; Iron Ammonium Sulfate; Ammonium Ferrous Sulfate; FAS; (NH₄)₂Fe(SO₄)₂·6H₂O; Mohr's Salt Hexahydrate
EINECS	233-151-8

Quality Control

Our Ferrous Ammonium Sulfate Hexahydrate is manufactured under a strict quality management system. Each batch undergoes comprehensive testing to ensure it meets high-purity standards suitable for analytical and industrial use. Certificates of Analysis (COA) documenting identity, assay, and impurity profiles are available for every shipment. We can supply grades compliant with ACS, Reagent Grade, and Technical specifications based on customer requirements.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at room temperature (15-25°C). This material is hygroscopic (moisture-sensitive) and light-sensitive; prolonged exposure to air, moisture, or light can lead to oxidation and degradation.

Specification

Item	Specification
Appearance	Pale green crystals or crystalline powder
Identification (IR)	Conforms
Assay (Titration)	≥ 99.0%
Chloride (Cl)	≤ 0.001%
Heavy Metals (as Pb)	≤ 0.001%
Insoluble Matter	≤ 0.005%
pH (5% Solution)	3.0 - 4.0

Note: Specifications can be tailored. Please contact us for the detailed technical data sheet of a specific grade.