Ammonium Hydroxide, commonly known as ammonia water, is an aqueous solution of ammonia. It appears as a clear, colorless liquid with a characteristic pungent odor. As a weak base and highly versatile chemical intermediate, it is widely utilized across industrial manufacturing, agriculture, and water treatment sectors.
Ammonium Hydroxide CAS 1336-21-6 Ammonia Water
Description
- CAS: 1336-21-6
- Synonyms: Ammonia Water, Aqua Ammonia, Aqueous Ammonia, Ammonia Solution
- Einecs: 215-647-6
- Molecular Formula: NH₄OH (NH₃·H₂O)
- Grade: Industrial Grade / Reagent Grade / Agriculture Grade
- Package: As required
Details
Reactions
Acid-Base Neutralization: As an alkaline solution, it reacts readily with various acids (such as HCl, H₂SO₄) to form corresponding ammonium salts.
Complexation: It forms stable, water-soluble complex ions with transition metals. For example, it reacts with copper ions to form a deep blue [Cu(NH₃)₄]²⁺ complex, and with silver to form Tollens’ reagent.
Precipitation: Acts as an excellent precipitating agent to form insoluble metal hydroxides (such as Aluminum hydroxide and Iron(III) hydroxide) from metal salt solutions.
Specifications
| Appearance | Colorless, transparent liquid |
| Assay (Purity) | 20% – 28% (Customizable upon request) |
| Melting Point | Approx. -77°C (Varies by concentration) |
| Volatility | Highly volatile; readily releases ammonia gas at room temperature |
| Ash Content | ≤ 0.005% |
| Solubility | Miscible with water and alcohol in all proportions |
| Thermal Stability | Decomposes into ammonia gas and water upon heating |
Applications & Functions
- Textiles & Dyeing: Used as an alkaline processing agent. It aids in washing, scouring, and color penetration, ensuring dyes bond effectively to fabric fibers.
- Agriculture (Fertilizers): Serves as a direct nitrogen-rich fertilizer or a fundamental precursor for manufacturing compound nitrogenous fertilizers, promoting vigorous crop growth.
- Water Treatment: Functions as a pH adjuster. When combined with chlorine, it forms chloramines, providing stable, long-lasting disinfection in municipal water systems.
- Chemical Synthesis: Acts as a vital nitrogen source and intermediate in the production of amines, ammonium salts, pharmaceuticals, and synthetic resins.
Storage Environment Requirements
- Temperature Control: Store in a cool, dry, and well-ventilated warehouse. Maintain ambient temperatures generally below 25°C to minimize gas volatilization and pressure build-up.
- Isolation: Keep strictly away from direct sunlight, open flames, and heat sources.
- Segregation: Store completely separated from incompatible substances, particularly strong acids, halogens (chlorine, bromine), and strong oxidizing agents.
- Container Sealing: Ensure all containers are tightly sealed and stored upright to prevent gas leakage and concentration degradation.
Handling & Usage Precautions
- Protective Equipment: Always wear chemical splash goggles, protective acid/alkali-resistant gloves, and appropriate protective clothing. In areas with high vapor concentration, use an approved full-face respirator.
- Ventilation: Operations should be conducted in well-ventilated areas or under a designated chemical fume hood to avoid inhaling irritating ammonia vapors.
- Spill Response: In the event of a leak, isolate the area immediately. Flush minor spills with plenty of water and neutralize with a dilute acid (like acetic acid) if necessary. Never flush concentrated solutions directly into waterways.
Formulations
- Household & Industrial Glass/Surface Cleaners:
- Formulation: Ammonia water mixed with water, surfactants, and alcohols.
- Role: Acts as a powerful alkaline solvent. It saponifies grease and lifts dirt, then evaporates completely without leaving any streaks or residue on the glass.
- Hair Dyes & Bleaching Agents:
- Formulation: Ammonia water combined with hydrogen peroxide and dye intermediates.
- Role: Functions as a swelling agent. The alkalinity raises the hair cuticle, allowing the dye molecules and bleaching agents to deeply penetrate the hair cortex for effective coloring.
Packaging Options
- Fiber drum or carton box, lined with PE bag.
- Customization: Customized packaging available upon request to meet specific transportation or facility requirements.
FAQ
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Q: Does the product meet our requirements regarding formulation, equipment, and processing?A: Yes, we will adjust the product formulation to your specific needs, ensuring it meets your processing requirements.

