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Ferrous Sulphide
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 Ferrous Sulphide (FeS) is an inorganic iron-sulfur compound appearing as a dark gray to black crystalline powder or solid. It has low solubility in water but reacts with acids to release hydrogen sulfide gas. It is used in numerous industrial and chemical processes due to its sulfide content and reactive properties. Ferrous Sulphide serves as a key intermediate in metallurgy, chemical synthesis, wastewater treatment, pigment production, and more.
Description
Ferrous Sulphide
Primary UsesÂ
- Chemical Industry
Ferrous Sulphide is widely used as a raw material or intermediate for producing various sulfur-containing compounds such as iron sulfides, sulfur fertilizers, and iron salts. It acts as a source of sulfide ions in chemical syntheses and reactions where controlled sulfide release is necessary. The compound is also used in the manufacture of sulfur dyes and pigments.
- Metallurgical Applications
In steel and iron production, Ferrous Sulphide is utilized for desulfurization—removing excess sulfur from molten metals to improve mechanical properties and prevent brittleness. It can also be involved in producing iron sulfide layers that protect metals against corrosion under certain conditions.
- Water and Wastewater Treatment
Ferrous Sulphide finds use in environmental engineering to precipitate heavy metals such as mercury, cadmium, lead, and arsenic from contaminated water streams by forming insoluble metal sulfides. This property makes it valuable for treating industrial effluents and preventing environmental contamination.
- Pigment and Coatings
Ferrous Sulphide is used in the manufacture of black pigments utilized in inks, paints, varnishes, and coatings. Its stable color properties provide durable, intense black coloration in various decorative and protective finishes.
Secondary UsesÂ
- Pharmaceutical Industry
Although limited, Ferrous Sulphide is sometimes employed in traditional medicine formulations, often for its iron content. It may be found in preparations for anemia treatment where slow-release iron and sulfur supplementation is beneficial.
- Laboratory and Research
In research laboratories, Ferrous Sulphide serves as a sulfide ion source in analytical chemistry and experimental studies involving sulfide-metal interactions, environmental simulations, and material synthesis.
- Battery Technology and Catalysis
Emerging applications include use as a cathode material or catalyst in energy storage devices such as lithium-ion batteries and in catalyzing sulfur-related chemical reactions. These advanced uses are under active investigation.
- Agriculture
While less common, Ferrous Sulphide has been explored as a micronutrient fertilizer additive to supply both iron and sulfur, essential elements for plant growth, enhancing crop yields and soil health.
PRODUCT KEY FEATURES
- Basic Identification Attributes
- Chemical Name (IUPAC): Iron(II) sulfide
- Common/Trade Name: Ferrous Sulphide
- CAS Number: 1317-37-9
- HS Code: 2825.90.00
- Molecular Formula: FeS
- Synonyms: Iron monosulfide, Ferrous monosulfide
- Physical & Chemical Properties
- Physical State: Powder or crystalline solid
- Color & Odor: Dark gray to black; odorless unless decomposed
- Melting Point: Approximately 1194°C
- Boiling Point: Not applicable (decomposes)
- Density: About 4.84 g/cm³
- Solubility: Insoluble in water; soluble in dilute acids releasing Hâ‚‚S gas
- pH: Neutral in solid form; acidic when reacting with acids
- Stability: Stable under dry conditions; reacts with acids and moisture releasing hydrogen sulfide gas
- Safety & Hazard Attributes
- Hazard Class (GHS): Irritant; harmful if inhaled due to potential Hâ‚‚S gas release
- Toxicity: Can release toxic hydrogen sulfide gas upon acid contact
- Exposure Limits: No specific occupational limits; control exposure to hydrogen sulfide
- NFPA Ratings: Health 2, Flammability 0, Reactivity 1
- Storage & Handling Attributes
- Storage Conditions: Store in a cool, dry, well-ventilated area, away from acids and moisture
- Container Type: Sealed containers or drums to prevent moisture ingress
- Shelf Life: Typically 1–2 years if stored properly
- Handling Precautions: Avoid dust inhalation; use gloves, goggles, and respiratory protection
- Regulatory & Compliance Attributes
- Complies with REACH, OSHA, and other relevant chemical safety standards
- Classified as hazardous due to hydrogen sulfide release risk; requires proper labeling
- Environmental & Health Impact
- Ecotoxicity: Toxic to aquatic organisms if released untreated
- Persistence: Decomposes naturally; not persistent
- Bioaccumulation: Not expected to bioaccumulate
- Carcinogenicity/Mutagenicity: Not classified as carcinogenic or mutagenic
SAFETY HANDLING PRECAUTIONS
- Safety Handling Precautions
- Personal Protective Equipment (PPE):
 Gloves, safety goggles, dust mask or respirator, protective clothing - Handling Guidelines:
 Avoid dust generation; work in well-ventilated areas; keep away from acids to prevent toxic gas release - Storage Measures:
 Keep containers tightly sealed; store in dry conditions away from incompatible substances - Hygiene Practices:
 Wash hands after handling; avoid eating, drinking, or smoking in work areas
- First Aid Measures
- Inhalation: Move to fresh air immediately; seek medical attention if respiratory irritation occurs
- Skin Contact: Wash with soap and water; seek medical attention if irritation persists
- Eye Contact: Rinse with water for 15 minutes; consult a physician if irritation continues
- Ingestion: Rinse mouth; do not induce vomiting; seek immediate medical attention
- Firefighting Measures
- Fire Hazards: Not flammable, but can release toxic hydrogen sulfide gas when heated or decomposed
- Extinguishing Media: Water spray, dry chemical, foam—depending on surrounding fire
- Special Precautions: Firefighters should wear self-contained breathing apparatus due to toxic gas risk
- Decomposition Products: Hydrogen sulfide, sulfur oxides, and iron oxides upon heating
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