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Ferrous Sulphide Extra Pure
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SHORT DESCRIPTION
Ferrous Sulphide Extra Pure is a high-purity, dark grey to black solid compound primarily used in laboratory demonstrations, especially for generating hydrogen sulphide (H₂S) gas when reacted with dilute acids. This reaction is a classic example in inorganic chemistry for studying gas evolution and the properties of sulfide compounds. Beyond educational uses, ferrous sulphide is also employed in analytical testing and in certain metallurgical and industrial processes where controlled sulfur introduction is required. Its high purity ensures minimal interference from impurities, making it ideal for precise scientific applications. The compound should be handled in a well-ventilated area and stored in tightly sealed containers to avoid moisture exposure and the release of toxic gases.
Description
USES
Primary Laboratory Uses:
- Hydrogen sulfide (H₂S) generation:
Reacts with dilute acids (like HCl) to produce hydrogen sulfide gas, commonly used in qualitative inorganic analysis of metal cations. - Demonstrations of gas evolution reactions:
Ideal for experiments illustrating double displacement and acid–sulfide reactions in educational settings. - Sulfur analysis and preparation studies:
Used as a sulfur-containing compound in analytical studies involving sulfur quantification or extraction.
Secondary Laboratory Uses:
- Study of sulfide minerals and geochemistry:
Helps simulate natural ore formation or decomposition processes in environmental or geological experiments. - Teaching decomposition and oxidation reactions:
Oxidizes in air to form iron oxide and sulfur dioxide—used to illustrate principles of thermodynamics and redox chemistry. - Precursor for synthesizing other iron-sulfur compounds:
Useful in the preparation of complex sulfides or coordination compounds in synthetic chemistry labs.
KEY PRODUCT FEATURES
KEY ATTRIBUTES
1. Basic Identification Attributes
- Chemical Name: Ferrous Sulphide
- Synonyms: Iron(II) sulfide, Iron monosulfide
- Chemical Formula: FeS
- Molecular Weight: 87.91 g/mol
- Grade: Extra Pure (Laboratory Reagent Grade)
- Appearance: Black to dark gray powder or lumps
- Odor: Rotten egg smell (due to trace H₂S release in moist air)
2. Physical & Chemical Properties
- Solubility: Insoluble in water; reacts slowly with acids
- Melting Point: ~1194°C
- Density: ~4.84 g/cm³
- Stability: Stable in dry air but decomposes in moist conditions
- Reactivity: Reacts with acids to produce hydrogen sulfide gas (H₂S)
3. Safety & Hazard Attributes
- GHS Classification:
- Harmful if swallowed or inhaled
- Releases toxic gas in contact with acids
- Hazard Statements:
- H302: Harmful if swallowed
- H331: Toxic if inhaled (H₂S release)
- H314: Causes severe skin burns and eye damage (on acid reaction)
- PPE Requirements:
- Lab coat
- Chemical-resistant gloves
- Safety goggles
- Dust mask or respirator if powder is airborne
- First Aid Measures:
- Inhalation: Move to fresh air; administer oxygen if breathing is difficult
- Skin Contact: Wash immediately with soap and water
- Eye Contact: Rinse thoroughly with water for at least 15 minutes
- Ingestion: Do not induce vomiting; seek immediate medical attention
4. Storage & Handling Attributes
- Storage Conditions:
- Store in tightly sealed containers
- Keep dry and away from acids or moisture
- Store in a well-ventilated area
- Handling Notes:
- Avoid creating dust
- Do not allow contact with acids
- Wash hands thoroughly after handling
5. Regulatory & Compliance Attributes
- CAS Number: 1317-37-9
- EC Number: 215-268-7
- UN Number: Not classified for transport under normal lab use
- Hazard Class: Not regulated, but caution is advised due to potential H₂S release
- Packaging Group: Not applicable
6. Laboratory Applications
- Primary Uses:
- Source of sulfide ion in inorganic reactions
- Demonstrations of metal-sulfur reactions
- Reactivity experiments with acids producing hydrogen sulfide
- Secondary Uses:
- Teaching material in redox and precipitation reactions
- Starting material for preparation of other iron or sulfur compounds
- Thermochemical studies and metallurgical education
SAFETY HANDLING PRECAUTIONS
SAFETY MEASURES
SAFETY & HANDLING
- Releases toxic and foul-smelling H₂S gas when reacting with acids
- H₂S is flammable and toxic – proper ventilation is essential
- Avoid inhalation, skin contact, and acid exposure unless under a fume hood
Storage:
- Keep in a sealed container, in a dry, cool, and well-ventilated area
- Protect from moisture, acids, and oxidizing agents
FIRST AID MEASURES
- Inhalation (H₂S): Move to fresh air immediately; seek urgent medical attention
- Skin Contact: Wash with soap and water
- Eye Contact: Flush with water for several minutes; consult physician
- Ingestion: Do not induce vomiting; rinse mouth and get medical help immediately
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