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Product Name: Ammonium Iron(II) Sulfate Hexahydrate
Chemical Formula: FeSO4·(NH4)2SO4·6H2O
Common Names: Mohr’s salt, Ferrous Ammonium Sulfate
Appearance: Pale green crystals, solid at room temperature
Usual Uses: Laboratory reagent, water treatment, analytical chemistry, some dyeing processes
Physical Hazards: Not flammable and not combustible, but will release toxic sulfur oxides if exposed to high heat
Health Hazards: Irritation risk for eyes, skin, and the respiratory system, with ingestion linked to gastrointestinal upset, vomiting, and risk of iron poisoning at higher amounts
Environmental Hazards: Potential soil and water contaminant, especially for water-dwelling organisms due to iron and ammonium ions
Signal Words: Warning signals include eye and skin irritation, do not inhale dust, avoid unnecessary environmental release
Main Ingredient: Ammonium Iron(II) Sulfate Hexahydrate
Chemical Components: Iron(II) sulfate, ammonium sulfate, water of crystallization
Inhalation: Fresh air is key, plus medical attention if any symptoms remain
Eye Contact: Rinse eyes under running water for several minutes, remove contacts if possible, never ignore persistent discomfort
Skin Contact: Wash thoroughly with soap and water, use cool water to limit irritation, seek medical advice for persistent redness or blistering
Ingestion: Rinse mouth, give plenty of water, do not force vomiting, head to the doctor if feeling ill or there’s any doubt about the amount consumed
Suitable Extinguishing Media: Use water spray, dry chemical, or CO2
Fire-Related Hazards: Product won’t burn, but it does break down at high temperatures and gives off irritating and toxic sulfur oxides and ammonia fumes
Protective Gear: Wear self-contained breathing apparatus and standard firefighting attire
Personal Precautions: Avoid producing dust, wear gloves and chemical splash goggles
Environmental Precautions: Keep substance out of drains, surface water, and soil; it poses a special concern if it runs into waterways
Cleanup Methods: Sweep or scoop up the material, use a filter vacuum instead of dry sweeping if possible; store collected material in a labeled container for disposal, wash area with water after cleanup
Handling: Only open containers in well-ventilated areas, avoid direct contact with skin and eyes, stay clear of breathing in dust
Storage: Store in tightly closed containers somewhere dry and cool, with no exposure to direct sunlight and away from strong acids and oxidizers; moisture protection matters because hexahydrate form can lose water on exposure
Engineering Controls: Fume hoods or local exhaust systems cut down airborne dust and keep air quality in check
Personal Protective Equipment: Use protection for eyes and face (splash-proof goggles or face shield), gloves of impervious material, lab coats or suitable protective clothing
Hygiene: Wash hands before eating or drinking, avoid touching eyes with gloves or unwashed hands
Appearance: Blue-green or pale green crystalline solid
Odor: No strong odor; sometimes a faintly salty or metallic smell
Melting Point: Decomposes at high temperatures with water release
Solubility: Readily dissolves in water, insoluble in alcohol
Density: Higher than water in solid form
pH (aqueous solution): Mildly acidic, typically between 2 and 4 depending on solution strength
Stability: Stable under normal dry conditions
Reactivity: Will react with strong acids and strong oxidizers; contact with alkalis may produce ammonia gas; slow oxidation may produce ferric ions
Hazardous Decomposition Products: Produces ammonia, sulfur oxides, and ferric compounds under misuse or high heat
Likely Exposure Routes: Inhalation, skin and eye contact, accidental swallowing
Symptoms of Exposure: Skin and eye exposure cause redness, irritation; dust inhalation has potential for throat discomfort, coughing; ingesting moderate or higher doses risks nausea, diarrhea, or iron toxicity
Chronic Effects: Repeated exposure may worsen iron stores in the body or cause mild sensitization on skin, but generally acute effects matter most
Impact on Aquatic Life: Harmful in concentrated spills, iron ions inhibit fish and plant health and sulfate alters water chemistry
Persistence/Degradability: Iron salts are not volatile, but can settle in sediments and persist for a long time
Mobility: High water solubility means potential spread in rivers or lakes
Bioaccumulation Potential: Low for complex biological systems, but iron may accumulate in sediments or soils
Methods: Follow hazardous chemical waste rules, use municipal or industrial disposal services equipped to handle iron-based and ammonium waste streams
Environmental Caution: Never pour large quantities down the drain, as both ions and sulfate can disrupt natural water chemistry and soils
Shipping Practices: Transport in closed, labeled containers with attention to preventing water, heat, or incompatible chemical contact
Spill Management: Make use of absorbent materials and avoid generating dust in case of leaks; address spill immediately to protect air and water, repackage undamaged material in secure containers
Worker Protection: Most regulations set exposure limits for iron and ammonium in the workplace, including requirements for safe handling, PPE use, and spill prevention
Environmental Regulation: Local guidelines may designate this salt as a water pollutant; exceedance of permissible limits in effluent calls for remediation
Reporting: Significant spills need to be documented and, in certain jurisdictions, reported to environmental authorities or workplace safety agencies
