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Ammonium Ferric Sulphate Extra Pure
Original price was: $ 18.00.$ 17.45Current price is: $ 17.45.
Ammonium Ferrous Sulphate Extra Pure
Original price was: $ 18.00.$ 17.23Current price is: $ 17.23.
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Ammonium Ferrous Sulphate Extra Pure, also known as Mohr’s salt, is a high-purity, light green crystalline compound composed of ferrous sulfate and ammonium sulfate. It is widely used in laboratory settings as a stable source of ferrous ions for redox titrations, particularly in permanganometric and dichromate analyses. Its stability in air, compared to other iron(II) salts, makes it ideal for preparing standard solutions and studying oxidation-reduction reactions. This compound is also valuable in coordination chemistry and iron metabolism research. The extra pure grade ensures minimal contamination, supporting precise analytical and experimental results. It should be stored in tightly sealed containers in a cool, dry place to prevent oxidation and maintain its integrity.
Description
Ammonium Ferrous Sulphate Extra Pure
Primary Uses
- Primary Standard in Redox Titrations
- Widely used as a primary standard reducing agent in titrations involving potassium permanganate (KMnO₄) due to its stability and high purity.
- Source of Fe²⁺ Ions
- Supplies ferrous ions in qualitative analysis, complexation reactions, or Fe²⁺ vs. Fe³⁺ redox studies.
- Teaching Tool for Oxidation-Reduction Concepts
- Demonstrates oxidation of Fe²⁺ to Fe³⁺ during titrations and reactions, ideal for student labs.
- Precursor in Synthesis of Iron-Based Compounds
- Used to prepare iron oxides, ferrocyanides, or other coordination compounds.
- Reagent in Analytical Chemistry
- Employed in iodometric and cerimetric titrations, and as a standard in redox potential calibrations.
Secondary Uses
- Demonstration of Salt Stability
- Shows improved air-stability of Fe²⁺ due to the presence of ammonium sulfate and crystallization water.
- Educational Crystal Growth Experiments
- Forms attractive pale green crystals, excellent for crystallization and lattice structure demonstrations.
- Electrochemical and Corrosion Studies
- Investigated in electrochemical cells or corrosion testing as a stable ferrous ion source.
- Model Compound in Environmental Chemistry
- Used in simulation studies of iron behavior in aqueous environments such as groundwater or sediment systems.
- Complexometric and Ligand Exchange Studies
- Useful in lab tests involving ligand binding with ferrous ions, such as EDTA titrations or colorimetric assays.
KEY PRODUCT FEATURES
KEY ATTRIBUTES
1. Basic Identification Attributes
- Chemical Name: Ammonium Ferrous Sulphate
- CAS Number: 7783-85-9
- HS Code: 28332100 (Double or complex salts of ferrous sulphate)
- Molecular Formula: (NH₄)₂Fe(SO₄)₂·6H₂O
- Synonyms:
- Mohr’s salt
- Ferrous ammonium sulfate hexahydrate
- Iron(II) ammonium sulfate
- Ammonium iron(II) sulfate
- Ammonium ferrosulphate
2. Physical & Chemical Properties
- Physical State: Solid (crystalline powder or crystals)
- Color & Odor: Light green to pale blue-green crystals; odorless
- Boiling Point: Decomposes
- Melting Point: ~100°C (loses water of crystallization)
- Density/Specific Gravity: ~1.86 g/cm³
- Solubility:
- Water: Freely soluble (~15 g/100 mL at 20°C)
- Alcohol: Insoluble
- pH Level: ~3.0–4.0 (5% aqueous solution, mildly acidic)
- Vapor Pressure: Negligible
- Flash Point: Not flammable
- Autoignition Temperature: Not applicable
- Viscosity: Not applicable (solid)
3. Safety & Hazard Attributes
- Hazard Class (GHS):
- Acute Toxicity – Oral (Category 4)
- Skin Irritation (Category 2)
- Eye Irritation (Category 2A)
- Environmental Hazard – Aquatic Chronic (Category 3)
- NFPA Ratings:
- Health: 2
- Flammability: 0
- Reactivity: 0
- Exposure Limits:
- OSHA PEL (as iron salts): 1 mg/m³ (fume)
- ACGIH TLV (as iron): 1 mg/m³ (TWA)
- Reactivity:
- Stable in air if acidic; oxidizes slowly to ferric salt in neutral/alkaline conditions
- Incompatible with strong oxidizing agents
4. Storage & Handling Attributes
- Storage Conditions:
- Store in a cool, dry place
- Best stored in slightly acidic environment to prevent oxidation
- Incompatible Materials:
- Strong oxidizers, alkalis
- Container Type:
- Amber glass or HDPE container, tightly sealed
- Shelf Life & Expiration Date:
- ~1–2 years if stored dry and protected from air
- Special Handling Requirements:
- Handle under dry conditions or store in acidified solution
- Use gloves and goggles when handling powder or solutions
5. Regulatory & Compliance Attributes
- Regulatory Status:
- Listed under TSCA and REACH
- Commonly used, low-hazard laboratory chemical
- Transportation Restrictions:
- Not classified as dangerous for transport
- Waste Disposal Method:
- Dispose via chemical waste stream
- Avoid release to environment due to iron accumulation
6. Environmental & Health Impact
- Ecotoxicity:
- May be harmful to aquatic organisms in large concentrations
- Persistence in Environment:
- Iron ions persist and may bind with other compounds in soil/water
- Carcinogenicity/Mutagenicity:
- Not classified as carcinogenic or mutagenic
- Biodegradability:
- Inorganic; not biodegradable, but manageable in trace quantities
SAFETY HANDLING PRECAUTIONS
SAFETY PRECAUTIONS
- Personal Protective Equipment (PPE):
- Wear a lab coat, chemical-resistant gloves (e.g., nitrile), and safety goggles.
- Use in a well-ventilated area or fume hood to prevent inhalation of dust.
- Handling:
- Handle carefully to avoid dust formation.
- Avoid contact with skin, eyes, and clothing.
- Do not ingest or inhale.
- Keep away from strong oxidizers and strong bases.
- Storage:
- Store in a tightly sealed container in a cool, dry, well-ventilated area.
- Protect from moisture and air—may oxidize over time, forming ferric salts.
- Keep away from acids and oxidizing materials.
- Hygiene Measures:
- Wash hands thoroughly after handling.
- Do not eat, drink, or smoke in the lab.
- Clean work surfaces and equipment after use.
FIRST AID MEASURES
- Inhalation:
- Move the person to fresh air.
- If breathing is difficult, give oxygen and seek medical attention.
- Monitor for symptoms like coughing or throat irritation.
- Skin Contact:
- Wash with plenty of soap and water.
- Remove contaminated clothing.
- Seek medical attention if irritation or rash develops.
- Eye Contact:
- Rinse eyes with clean water for at least 15 minutes.
- Keep eyelids apart and remove contact lenses if present.
- Seek medical advice if irritation continues.
- Ingestion:
- Rinse mouth thoroughly with water.
- Do not induce vomiting.
- If the person is conscious, give water or milk.
- Seek immediate medical attention—iron compounds can be toxic in large quantities.
FIRE FIGHTING MEASURES
- Suitable Extinguishing Media:
- Use dry chemical, foam, carbon dioxide (CO₂), or water spray, depending on the surrounding fire.
- Specific Hazards:
- Non-flammable, but heating may release toxic fumes such as:
- Sulfur oxides
- Ammonia
- Iron oxides
- Non-flammable, but heating may release toxic fumes such as:
- Protective Equipment for Firefighters:
- Use self-contained breathing apparatus (SCBA) and full protective gear.
- Firefighting Instructions:
- Avoid inhalation of decomposition products.
- Cool containers with water spray.
Prevent contaminated runoff from entering drains—harmful to aquatic life.
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