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Product Name: Ammonium Iron (III) Sulfate Dodecahydrate
Synonyms: Ferric ammonium sulfate, Iron alum, Ammonium iron alum
CAS Number: 7783-85-9
Recommended Use: Laboratory reagent, tanning, dyeing, water purification, photography
Manufacturer: Chemical supplier contact information available on product packaging
Emergency Contact: National Poison Control, local emergency services, supplier emergency telephone number
Classification: Not classified as hazardous under GHS in most jurisdictions, but can cause irritation
Label Elements: May cause skin, eye, and respiratory irritation
Signal Word: Warning
Hazard Statements: Irritates eyes, skin; May cause allergic reaction in sensitive individuals; Harmful if swallowed in large amounts
Precautionary Statements: Avoid contact with skin and eyes; Do not breathe dust; Wash thoroughly after handling; Wear suitable protective gear
Chemical Name: Ammonium Iron (III) Sulfate Dodecahydrate
Common Name: Iron alum
CAS Number: 7783-85-9
Formula: FeNH4(SO4)2·12H2O
Concentration: 100%
Eyes: Rinse with water for several minutes; remove contacts; seek medical attention if irritation persists
Skin: Wash area with soap and water; remove contaminated clothing; see doctor if irritation develops
Inhalation: Move person outside to get fresh air; assist breathing, seek medical help for difficulty or cough
Ingestion: Rinse mouth; do not induce vomiting; drink water if conscious; get medical advice if feeling unwell
Suitable Extinguishing Media: Dry chemical, CO2, water spray, foam
Special Hazards: Heated material can emit toxic or irritating fumes of sulfur oxides, nitrogen oxides, iron oxides, ammonia
Protective Equipment: Firefighters wear self-contained breathing apparatus and full turnout gear; avoid smoke inhalation
Firefighting Advice: Stay upwind; use water spray to cool containers near flames; prevent water from contaminating environment
Personal Precautions: Wear gloves, goggles, dust mask; ventilate area; avoid dust formation
Environmental Precautions: Prevent spills entering drains, rivers; notify authorities if significant environmental contamination occurs
Cleanup Methods: Sweep up without creating dust; collect in labeled, sealed container for disposal; wash area with plenty of water
Handling: Keep containers tightly closed; avoid generating dust; use only in well-ventilated spaces; wash hands and skin after use; keep away from incompatible substances such as strong acids and strong bases
Storage: Store in a dry, cool, well-ventilated area; keep out of direct sunlight; secure containers to prevent accidental release or spill; keep away from food and drinks; lock up in chemical storage if possible
Exposure Limits: Not established by OSHA, ACGIH, or NIOSH for this compound
Engineering Controls: Use local exhaust, fume hood, safety shower and eyewash station near work area
Personal Protective Equipment: Safety goggles, chemical-resistant gloves, lab coat or apron, dust mask or respirator as needed for airborne particles; avoid eating, drinking, smoking near material
Hygiene Measures: Wash thoroughly after handling, especially before eating or drinking; properly dispose of contaminated clothing and gear
Appearance: Pale violet to light purple crystalline solid
Odor: Odorless
Molecular Weight: 482.18 g/mol
Solubility: Soluble in water, insoluble in alcohol
Melting Point: Loses water at 39°C, decomposes at higher temperatures
pH (0.1 M solution): Acidic, pH about 2.0-3.0
Boiling Point: Not applicable (decomposes before boiling)
Density: 1.71 g/cm3
Evaporation Rate: Not applicable
Vapor Pressure: Not applicable
Chemical Stability: Stable under normal conditions
Conditions to Avoid: Excess heat, moisture, incompatible substances
Incompatible Materials: Strong oxidizers, strong bases, strong acids
Decomposition Products: Forms iron oxides, sulfur oxides, ammonia, nitrogen oxides in fire or strong heat
Reactivity: May react with strong reducing agents
Routes of Exposure: Inhalation, ingestion, skin and eye contact
Acute Effects: May cause irritation, coughing, nausea, vomiting if large amounts are swallowed or inhaled
Chronic Effects: Prolonged or repeated exposure can cause dermatitis, possible sensitization of skin
Carcinogenicity: Not listed by IARC, NTP, OSHA
LD50/LC50: Data not available for compound; iron salts oral LD50 (rat) ranges from 325 mg/kg (FeCl3)
Other Effects: May aggravate pre-existing conditions, especially those involving skin, eyes, lungs, digestive tract
Ecotoxicity: Harmful to aquatic organisms in large concentrations; possible iron and sulfate release to water
Persistence and Degradability: Inorganic compound, will persist, gradual breakdown in environment
Bioaccumulative Potential: Low bioaccumulation expected
Mobility in Soil: Mobile, leaches to groundwater, can contribute to acidification
Other Adverse Effects: Iron and sulfate ions can disrupt local water chemistry and harm sensitive aquatic species
Waste Treatment: Dispose of in accordance with local, regional, national, and international regulations;
Methods: Small quantities dissolve and flush with large amounts of water if local regulations allow;
Larger Amounts: Collect for hazardous waste pickup; avoid release to environment; do not pour down drain unless specifically permitted
Packaging: Triple rinse before recycling or disposal, puncture containers after emptying
Precautions: Avoid mixing with incompatible waste streams; label and document for hazardous waste purposes
UN Number: Not regulated for transport
Proper Shipping Name: Not classified as hazardous for transport
Hazard Class: Not applicable
Packing Group: Not applicable
Marine Pollutant: May have some environmental hazard in bulk quantities
Transport Precautions: Keep container closed, avoid moisture, handle gently to avoid breakage and dust release; transport under local regulations for laboratory chemicals
TSCA Status: Listed
EINECS (EU): Listed
REACH Status: Exempt as an inorganic hydrate
SARA Title III: Not listed as a hazardous substance
California Proposition 65: Not listed
Other Regulations: Handled as a laboratory chemical; check local and national restrictions for use, handling, and disposal
Labeling: Not required under GHS in all countries, but hazard labeling recommended in workplace settings
