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Ferrous Ammonium Sulphate Hexahydrate

Ferrous Ammonium Sulphate Hexahydrate

Ferrous ammonium sulphate hexahydrate, commonly known as Mohr’s salt, is a double salt used as a stable source of ferrous ions in analytical chemistry and education labs. Its hexahydrate structure and ammonium component help resist oxidation compared with simple ferrous sulphate, improving titration accuracy.

Pale green crystals dissolve in water to form clear solutions for redox analysis, standardizations, and demonstrations. AR-grade quality ensures low impurities and reproducible results in sensitive measurements.

Sr. No. Description Specification
1 Purity 98% minimum
2 Chemical Formula FeSO₄·(NH₄)₂SO₄·6H₂O
3 Form Pale green crystalline solid
4 Country of origin India
5 Quantities Typically available in 500 g, 1 kg, and multi-kg laboratory packs
  • Light green crystals, moderately soluble in water.
  • Provides stable Fe²⁺ in solution when stored and handled correctly, minimizing air oxidation.
  • Slightly acidic aqueous solutions due to dissolved ferrous sulfate.
  • Decomposes on strong heating, releasing sulfur oxides and ammonia.
  • Standard reductant in redox titrations (e.g., dichromate titrations) and analytical chemistry.
  • Educational reagent for demonstrating redox reactions and iron chemistry.
  • Precursor in small-scale syntheses of iron complexes and catalysts.
  • Calibration and validation of analytical methods requiring ferrous standards.
  • May cause skin and eye irritation and respiratory discomfort if dust is inhaled.
  • Wear safety goggles, gloves, and a lab coat; handle powders in well-ventilated areas or fume hoods.
  • Avoid ingestion and prolonged contact; prolonged contact may cause dermatitis.
  • Store in tightly closed containers, protected from light and moisture to limit oxidation.
Ferrous Ammonium Sulphate Hexahydrate
Sr. No. Description Specification
1 Purity 98% minimum
2 Chemical Formula FeSO₄·(NH₄)₂SO₄·6H₂O
3 Form Pale green crystalline solid
4 Country of origin India
5 Quantities Typically available in 500 g, 1 kg, and multi-kg laboratory packs
  • Light green crystals, moderately soluble in water.
  • Provides stable Fe²⁺ in solution when stored and handled correctly, minimizing air oxidation.
  • Slightly acidic aqueous solutions due to dissolved ferrous sulfate.
  • Decomposes on strong heating, releasing sulfur oxides and ammonia.
  • Standard reductant in redox titrations (e.g., dichromate titrations) and analytical chemistry.
  • Educational reagent for demonstrating redox reactions and iron chemistry.
  • Precursor in small-scale syntheses of iron complexes and catalysts.
  • Calibration and validation of analytical methods requiring ferrous standards.
  • May cause skin and eye irritation and respiratory discomfort if dust is inhaled.
  • Wear safety goggles, gloves, and a lab coat; handle powders in well-ventilated areas or fume hoods.
  • Avoid ingestion and prolonged contact; prolonged contact may cause dermatitis.
  • Store in tightly closed containers, protected from light and moisture to limit oxidation.
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