Ammonia Solution Aq. 25% - 100ml

Ammonia Solution 25% Aqueous
Chemical Formula: NH₃ (in aqueous solution)
Molar Mass (NH₃): 17.03 g/mol
CAS Number: 1336-21-6
Concentration: 25% w/w ammonia in water
Appearance: Clear, colorless liquid
Odor: Strong, characteristic pungent ammonia odor

Ammonia solution (25%) is a highly alkaline aqueous solution of ammonia gas. It is widely used in industrial processes, laboratories, and water treatment systems due to its strong basicity, reactivity, and volatility. The solution readily releases ammonia vapor and must be handled with caution in well-ventilated environments.

Chemical and Physical Properties

• Density: ~0.91 g/cm³ at 20 °C

• Boiling Point: ~37 °C (varies with concentration; volatilizes easily)

• pH: >11 (strongly alkaline)

• Solubility: Fully miscible with water

• Volatility: Releases ammonia gas readily when exposed to air

• Thermal Stability: Decomposes at elevated temperatures, releasing ammonia vapors

• Corrosiveness: Corrosive to non-resistant metals such as copper, brass, aluminum, and zinc

• Reactivity: Reacts with acids to form ammonium salts; may react violently with strong oxidizing agents

Applications

Chemical Synthesis

• Used as a basic reagent and nitrogen source in the synthesis of fertilizers, polymers, and specialty chemicals.

Cleaning and Degreasing

• Effective in industrial cleaning solutions for removing oils, greases, and surface residues.

Water and Wastewater Treatment

• Applied for pH control and ammonia-based treatment processes.

Laboratory Use

• Acts as a source of ammonia vapor in various analytical and synthetic procedures.

Metallurgy and Surface Processing

• Employed in nitriding and other metal surface treatments.

Safety

Signal Word: Danger

Hazard Statements:

• H314: Causes severe skin burns and eye damage

• H332: Harmful if inhaled

• H400: Very toxic to aquatic life

Precautionary Statements:

• P273: Avoid release to the environment

• P280: Wear protective gloves/protective clothing/eye protection/face protection

• P305+P351+P338: IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses if present and easy to do. Continue rinsing

• P310: Immediately call a POISON CENTER or doctor

First Aid Measures

Inhalation: Move person to fresh air. Administer oxygen if breathing is difficult. Seek immediate medical attention.
Skin Contact: Rinse skin immediately with plenty of water. Remove contaminated clothing. Seek medical attention if irritation or burns occur.
Eye Contact: Rinse with water for at least 15 minutes. Remove contact lenses if possible. Seek immediate medical help.
Ingestion: Do not induce vomiting. Rinse mouth with water. Seek immediate medical assistance.

Handling and Storage

• Store in tightly sealed, corrosion-resistant containers in a cool, dry, well-ventilated area

• Keep away from acids, oxidizing agents, and incompatible materials

• Use with appropriate local exhaust ventilation to avoid vapor accumulation

• Avoid contact with metals that may corrode or form explosive compounds with ammonia

Environmental Considerations

Ammonia solution is very toxic to aquatic organisms. Prevent release into drains or watercourses. Waste and residues should be handled and disposed of in accordance with applicable environmental regulations.