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Ammonium Bromide Extra Pure
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- SHORT DESCRIPTION
Ammonium Bromide Extra Pure is a high-purity, white crystalline powder highly soluble in water, widely used in laboratory settings for analytical, photographic, and synthetic applications. It serves as a reliable source of bromide ions in chemical reactions and is commonly used in preparing photographic emulsions, corrosion inhibitors, and certain pharmaceuticals. In analytical chemistry, it is employed in qualitative and quantitative analysis involving halide ion detection. The extra pure grade ensures minimal contamination, making it ideal for sensitive research and high-precision work. To preserve its stability and prevent moisture uptake, it should be stored in well-sealed containers in a cool, dry environment.
Description
- USES
Primary Uses
- Source of Bromide Ions in Analytical Chemistry
- Supplies Br⁻ for qualitative analysis, precipitation reactions, and halide ion comparison studies.
- Reagent in Photographic and Imaging Chemistry
- Used in experimental preparation of silver bromide (AgBr) for photosensitive materials in research and educational labs.
- Precursor in Organic and Inorganic Synthesis
- Used in the synthesis of organobromine compounds and complex bromide salts in laboratory settings.
- Conductivity and Electrolyte Studies
- Provides a simple, high-purity ionic compound for electrical conductivity and ion transport experiments.
- Acid-Base Equilibrium Demonstrations
- NH₄⁺ acts as a weak acid; used to demonstrate hydrolysis of weak electrolytes and pH behavior in buffer systems.
Secondary Uses
- Component in Corrosion Testing
- Used in lab-scale studies of halide-induced corrosion on metal surfaces under controlled conditions.
- Reagent in Crystal Growth and Solubility Studies
- Studied for its crystallization behavior, especially in experiments involving salt mixtures and phase diagrams.
- Flame Test for Ammonium & Bromide Detection
- Applied in qualitative flame testing and spectroscopy to analyze cation and anion emissions.
- Simulation of Atmospheric or Marine Chemistry
- Investigated in environmental labs for modeling halide cycles in aerosol or seawater systems.
- Educational Demonstrations in Ionic Compound Properties
- Used in student labs to explore solubility, melting point, and conductivity of ionic solids.
KEY PRODUCT FEATURES
KEY ATTRIBUTES
1. Basic Identification Attributes
- Chemical Name: Ammonium Bromide
- CAS Number: 12124-97-9
- HS Code: 28275100 (Bromides of sodium or potassium — falls under general bromides)
- Molecular Formula: NH₄Br
- Synonyms:
- Ammonium monobromide
- Hydrobromic acid, ammonium salt
- NH₄Br
2. Physical & Chemical Properties
- Physical State: Solid (crystalline powder)
- Color & Odor: White or colorless crystals; odorless
- Boiling Point: Decomposes before boiling
- Melting Point: ~235°C
- Density/Specific Gravity: ~2.43 g/cm³
- Solubility:
- Water: Freely soluble (~76 g/100 mL at 25°C)
- Alcohol: Slightly soluble
- pH Level: ~5.0–6.0 (in 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)
- Eye Irritation (Category 2A)
- Not generally hazardous in small lab quantities, but caution advised
- NFPA Ratings:
- Health: 2
- Flammability: 0
- Reactivity: 0
- Exposure Limits:
- No established OSHA or ACGIH limits
- Use general dust exposure precautions
- Reactivity:
- Stable under normal conditions
- Can release toxic fumes (e.g., NH₃, HBr) if heated to decomposition
4. Storage & Handling Attributes
- Storage Conditions:
- Store in a cool, dry area away from moisture
- Keep container tightly closed
- Incompatible Materials:
- Strong oxidizers, acids, alkalis
- Container Type:
- Glass or HDPE containers
- Shelf Life & Expiration Date:
- ~3 years if sealed and protected from humidity
- Special Handling Requirements:
- Use gloves and goggles
- Avoid inhalation of dust and contact with eyes
5. Regulatory & Compliance Attributes
- Regulatory Status:
- Listed under TSCA, REACH
- Approved for lab and photographic use
- Transportation Restrictions:
- Not regulated for ground or air transport in small lab quantities
- Waste Disposal Method:
- Dissolve and neutralize under controlled lab conditions
- Dispose of as halide waste in accordance with local regulations
6. Environmental & Health Impact
- Ecotoxicity:
- May be harmful to aquatic organisms at high concentrations
- Persistence in Environment:
- Dissociates into bromide and ammonium ions
- Carcinogenicity/Mutagenicity:
- Not classified as carcinogenic
- Biodegradability:
- Inorganic salt; not biodegradable, but environmentally manageable
SAFETY HANDLING PRECAUTIONS
SAFETY PRECAUTIONS
- Personal Protective Equipment (PPE):
- Wear a lab coat, safety goggles, and chemical-resistant gloves (e.g., nitrile or neoprene).
- Use a dust mask or work in a fume hood to avoid inhalation of powder.
- Handling:
- Avoid breathing dust and prevent contact with skin, eyes, and clothing.
- Use in a well-ventilated area or under a chemical fume hood.
- Keep container tightly closed when not in use.
- Avoid mixing with strong acids, oxidizers, or alkalis.
- Storage:
- Store in a cool, dry, well-ventilated area in a tightly sealed container.
- Protect from moisture (hygroscopic).
- Keep away from incompatible substances like strong oxidizers and acids.
- Hygiene Measures:
- Wash hands thoroughly after handling.
- Avoid touching face, especially eyes and mouth.
- Do not eat, drink, or smoke in the lab area.
FIRST AID MEASURES
- Inhalation:
- Move the affected person to fresh air.
- Seek medical attention if symptoms like coughing or shortness of breath develop.
- Provide oxygen if breathing becomes difficult.
- Skin Contact:
- Wash thoroughly with soap and water.
- Remove contaminated clothing.
- Seek medical attention if irritation or rash occurs.
- Eye Contact:
- Rinse cautiously with clean water for at least 15 minutes, lifting upper and lower eyelids occasionally.
- Remove contact lenses if present and easy to do.
- Seek medical attention if irritation persists.
- Ingestion:
- Rinse mouth with water.
- Do not induce vomiting.
- Give water only if the person is fully conscious.
- Seek immediate medical attention.
FIRE FIGHTING MEASURES
- Suitable Extinguishing Media:
- Use water spray, dry chemical powder, carbon dioxide (CO₂), or foam depending on surrounding materials.
- Specific Hazards:
- Non-flammable, but may release toxic fumes of ammonia and hydrogen bromide (HBr) if heated or involved in a fire.
- Protective Equipment for Firefighters:
- Wear full protective clothing and a self-contained breathing apparatus (SCBA).
- Firefighting Instructions:
- Evacuate the area and isolate the hazard.
- Cool fire-exposed containers with water spray.
- Avoid inhaling fumes—ventilate after the fire is extinguished.
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