Ammonium iron (II) sulfate hexahydrate (Ferrous ammonium sulfate) or Mohr’s salt
Product Overview & Quality
- Product Name: Ammonium iron (II) sulfate hexahydrate (Ferrous ammonium sulfate) or Mohr’s salt
- Brand: Kemaus (Product Code: KA-039)
- Grade: Analytical Reagent (AR Grade) with premium purity of 98.5 percent or higher. Produced under Kemaus strict laboratory standards. It is highly preferred in analytical chemistry due to its excellent resistance to air oxidation compared to other iron (II) salts, ensuring exceptional baseline stability.
- Physical Properties: Odorless, pale blue-green fine crystals.
- Solubility: Soluble in water; insoluble in alcohol. Yields a mildly acidic aqueous solution.
- Key Use: Heavily utilized as a reliable standard reagent in redox titrations (oxidation-reduction assays). Widely used in environmental testing laboratories as a core reagent for determining Chemical Oxygen Demand (COD) in wastewater. Also applied in preparing standard iron calibration solutions for analytical instrumentation.
Safety & Hazards
- Classification: Causes skin irritation. Causes serious eye irritation. May cause respiratory irritation.
- Health Risks: Direct eye contact causes significant irritation and short-term redness. Prolonged skin contact results in localized discomfort. Inhalation of fine dust irritates the mucous membranes of the respiratory tract.
- First Aid Measures: Flush eyes or skin immediately with plenty of flowing water for at least 15 minutes. If inhaled, move the victim to fresh air. Seek medical advice if irritation persists.
Handling & Storage
- Storage: Light and Air Sensitive. Can slowly oxidize to iron (III) state (indicated by a yellowish-brown discoloration) upon prolonged exposure to air and light. Must be stored in the original, tightly sealed Kemaus container in a cool, dry, and dark space at stable room temperature (below 30 degrees Celsius).
- Precautions: Wear standard personal protective equipment (PPE), including laboratory gloves, safety glasses, and a particulate dust mask. Avoid dust generation and ensure the container is capped tightly immediately after each use.







