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Product Name: Ferrous Sulfate Monohydrate
Chemical Name: Iron(II) sulfate monohydrate
Synonyms: Green Vitriol, Copperas, Iron Sulfate
CAS No.: 17375-41-6
EC Number: 231-753-5
Recommended Use: Water treatment, fertilizer, feed additive, pigment manufacturing, iron supplement
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Classification: Harmful if swallowed, skin irritation, serious eye irritation, may cause respiratory irritation
Signal Word: Warning
Hazard Statements: May be harmful if ingested, can irritate skin and eyes, causes respiratory tract irritation if inhaled, prolonged exposure may cause damage to organs through single or repeated exposure
Pictograms: Exclamation mark, health hazard
Precautionary Statements: Avoid contact with eyes, skin, and clothing, do not breathe dust, use only outdoors or in well-ventilated areas, wash hands thoroughly after handling, wear protective gloves, eye protection, and clothing
Other Hazards: Dust may cause mechanical irritation, can stain skin and surfaces
Chemical Identity: Ferrous Sulfate Monohydrate
CAS Number: 17375-41-6
Percent (%): 95–100%
Impurities: Trace amounts of ferric sulfate, free sulfuric acid, water of hydration
Molecular Formula: FeSO4·H2O
General Advice: Remove from exposure, seek prompt medical attention for all significant effects
If Inhaled: Move to fresh air, seek medical attention if symptoms like shortness of breath or coughing occur
If Swallowed: Rinse mouth thoroughly, give water to drink, do not induce vomiting, get medical help immediately
If on Skin: Take off contaminated clothing, wash with soap and plenty of water, seek care if skin irritation persists
If in Eyes: Rinse cautiously with water for 15 minutes, remove contact lenses, seek medical attention for persistent irritation
Acute Symptoms and Effects: Iron poisoning, stomach pain, vomiting, diarrhea, burns to skin and mucous membranes
Suitable Extinguishing Media: Water spray, foam, dry chemical, carbon dioxide
Unsuitable Extinguishing Media: Avoid using water jets
Specific Hazards: Product itself does not burn, but can decompose at high temperatures releasing toxic and irritating sulfur oxides
Protective Equipment for Firefighters: Self-contained breathing apparatus, protective suit
Advice for Firefighters: Fight fire from upwind, avoid inhaling fumes, contain run-off water from fire fighting to prevent environmental contamination
Personal Precautions: Evacuate area, don appropriate personal protective equipment such as gloves, safety goggles, dust masks
Environmental Precautions: Contain spillage, prevent run-off into drains, surface waters, or soil
Methods for Cleaning Up: Scoop up spilled material mechanically, avoid raising dust, collect into suitable container for disposal, thoroughly ventilate area and wash spill site after material pick up
Reference to Other Sections: Refer to exposure controls, personal protection, and disposal considerations for further guidance
Handling: Use only in well-ventilated areas, handle in a way to minimize dust generation and accumulation, wash hands thoroughly after handling, do not eat, drink, or smoke while working with this substance
Storage: Store in a cool, dry, well-ventilated area, keep container tightly closed, protect from moisture and incompatible substances such as alkalis and oxidizers, store away from food and animal feedstuffs, regular checks for product degradation and container integrity are important
Exposure Limits: OSHA PEL for iron salts (soluble): 1 mg/m3 (Fe), ACGIH TLV: 1 mg/m3 (Fe)
Engineering Controls: Local exhaust ventilation or general room ventilation to keep airborne concentrations below recommended limits
Personal Protection: Safety glasses or goggles, chemical-resistant gloves (nitrile, neoprene), protective work clothing, suitable dust mask or respirator where dust is generated
Hygiene Measures: No smoking or eating at workplace, wash thoroughly after handling, change contaminated clothing before leaving the work area
Appearance: Pale greenish to blue-green crystals or granules
Odor: Odorless
Odor Threshold: Not applicable
pH: Acidic (approx. 2–4, 50 g/L solution)
Melting Point: Decomposes before melting
Boiling Point: Not applicable
Flash Point: Not flammable
Flammability: Non-flammable
Vapor Pressure: Not available
Solubility: Soluble in water, insoluble in alcohol
Specific Gravity/Density: About 1.9–2.0 g/cm3
Bulk Density: 800–1300 kg/m3
Evaporation Rate: Not applicable
Partition Coefficient: Not available
Decomposition Temperature: >56 °C (releases water of hydration)
Chemical Stability: Stable under standard temperatures and pressures in dry conditions
Conditions to Avoid: Moisture, heat, exposure to air (oxidizes to ferric sulfate), strong reducing agents or oxidizers
Incompatible Materials: Alkalis, oxidizing materials, lime, strong acids
Hazardous Decomposition Products: Sulfur dioxide, sulfur trioxide, hydrogen sulfide, iron oxides, toxic metal fumes
Possibility of Hazardous Reactions: No dangerous reactions expected if handled under recommended conditions
Routes of Exposure: Inhalation, ingestion, skin and eye contact
Acute Toxicity: Oral LD50 (rat): 319 mg/kg
Chronic Effects: Prolonged or repeated exposure can result in iron overload, irritates digestive system, may cause liver and organ damage, affects blood and metabolism
Symptoms: Nausea, vomiting, diarrhea, abdominal pain, rapid pulse, cyanosis, convulsions, in severe cases, shock and death
Carcinogenicity: Not classified as carcinogen by IARC, NTP, OSHA
Reproductive Toxicity: Not expected under normal industrial use
Sensitization: Skin sensitization not expected, repeated contact may cause irritation or dermatitis
Ecotoxicity: Toxic to aquatic life in high concentrations, acute and chronic effects on fish and aquatic invertebrates
Persistence and Degradability: Metal ions not biodegradable but can persist in environment and accumulate
Bioaccumulative Potential: Iron may accumulate in plants and aquatic organisms
Mobility in Soil: Soluble in water, can migrate in soil and contaminate groundwater
Other Adverse Effects: Increases acidity of water and soil, can cause long-term effects in water environments
Disposal Methods: Dispose of contents/container in accordance with local, regional, and national regulations
Product Waste: Consider treating to neutralize acidity before disposal, not to be disposed with household garbage
Contaminated Packaging: Rinse empty containers, dispose as hazardous waste
Special Precautions: Prevent leaching to drains and watercourses, avoid creating dust scatter during disposal process
UN Number: Not regulated as dangerous goods for transportation
Transport Hazard Class: Not classified
Packing Group: Not regulated
Proper Shipping Name: Not regulated
Environmental Hazards: Not considered marine pollutant, avoid release to environment during transit
Special Precautions: Protect from moisture, prevent spillage, ensure containment for bulk transport
US (OSHA): Hazardous under OSHA Hazard Communication Standard
EU (REACH): Registered, requirements under EU CLP
Canada (WHMIS): Classified as hazardous, subject to WHMIS regulations
Other Regulations: Listed on TSCA, EINECS
Label Requirements: Comply with GHS specifications
Restrictions: Follow regional and national guidelines for storage, disposal, use in agriculture, industrial and environmental applications
