Ammonia, Ammonia Anhydrous, Liquid Ammonia, Aqueous Ammonia, Aqua Ammonia, Ammonium Hydroxide Solution, 7664-41-7

Ammonia, Ammonia Anhydrous, Liquid Ammonia, Aqueous Ammonia, Aqua Ammonia, Ammonium Hydroxide Solution, 7664-41-7

AMMONIA (NH₃)

PRODUCT IDENTIFICATION INFORMATION

CHEMICAL STRUCTURE

Ammonia Structure:

        H
         \
          N — H
         /
        H

Structure Description:

• Covalently bonded compound (non-metal + non-metal).

• One nitrogen atom bonded to three hydrogen atoms.

• Trigonal pyramidal molecular geometry (due to lone pair of electrons).

• Polar molecule (high dipole moment).

• Contains a lone pair of electrons on the nitrogen atom.

• Forms hydrogen bonds with water molecules, leading to high solubility.

• Weak base (does not contain OH⁻ ions but accepts protons).

SECTION 1: CHEMICAL IDENTITY AND DESCRIPTION

SECTION 2: PHYSICAL AND CHEMICAL PROPERTIES

SECTION 3: AMMONIA vs OTHER NITROGEN COMPOUNDS

SECTION 4: MECHANISM OF ACTION

SECTION 5: PRODUCTION PROCESS

Industrial Production Method (Haber-Bosch Process):

Reaction: N₂(g) + 3H₂(g) ⇌ 2NH₃(g) + Heat

Process Flow:
Nitrogen (from air) + Hydrogen (from natural gas/water gas) → Compression (200-300 bar) → Heating (400-500°C) → Catalyst (Iron-based) → Reaction → Cooling → Ammonia Condensation → Anhydrous Ammonia

Step-by-Step Description:

1. Nitrogen Source: Nitrogen is obtained by fractional distillation of air or from air separation units.

2. Hydrogen Source: Hydrogen is obtained from natural gas via steam reforming (methane + steam → CO + H₂) or from water gas shift reaction.

3. Compression: Nitrogen and hydrogen are compressed to 200-300 bar pressure.

4. Heating: Compressed gases are heated to 400-500°C.

5. Catalytic Reaction: Gases pass over a promoted iron catalyst (magnetite with promoters: K₂O, CaO, Al₂O₃).

6. Ammonia Formation: Reaction proceeds under high pressure and temperature; Yield is limited by equilibrium (about 15-20% per pass).

7. Cooling and Condensation: Gases are cooled to condense liquid ammonia.

8. Recycle: Unreacted nitrogen and hydrogen are recycled back to the reactor.

9. Final Product: Anhydrous liquid ammonia is collected and stored under pressure; Dilute aqueous solutions (25-34%) are produced by dissolving in water.

Alternative Sources: Ammonia can also be produced from coal gasification or as a by-product of coke ovens (historical methods).

SECTION 6: FUNCTIONAL PROPERTIES

SECTION 7: MAIN APPLICATION AREAS

SECTION 8: SAMPLE FORMULATIONS

Aqueous Ammonia Solution (25% w/w):

Household Cleaner (Diluted Ammonia):

SECTION 9: QUALITY SPECIFICATIONS

SECTION 10: TOXICOLOGICAL PROFILE

SECTION 11: GHS CLASSIFICATION AND LABELING

GHS Classification (in accordance with CLP and UN GHS):

Signal Word: DANGER

Hazard Pictograms: GHS02 (Flame), GHS04 (Gas Cylinder), GHS05 (Corrosive), GHS06 (Skull and Crossbones), GHS09 (Environment)

Hazard Statements (H-Codes):

NFPA 704 Hazard Classification:

SECTION 12: PRECAUTIONARY STATEMENTS (P-CODES)

SECTION 13: FIRST AID MEASURES

SECTION 14: FIREFIGHTING MEASURES

SECTION 15: STORAGE AND SHELF LIFE

SECTION 16: PACKAGING OPTIONS

SECTION 17: TRANSPORT INFORMATION

SECTION 18: REGULATORY STATUS

SECTION 19: OTHER NAMES AND SYNONYMS

SECTION 20: SUMMARY TABLE

SECTION 21: CRITICAL WARNINGS AND BEST PRACTICES

CRITICAL WARNINGS:

• TOXIC BY INHALATION (H331): Severe respiratory irritant; Can cause pulmonary edema and death at high concentrations. IMMEDIATE MEDICAL ATTENTION REQUIRED FOR INHALATION.

• CORROSIVE (H314, H318): Causes severe skin burns and eye damage. PERSONAL PROTECTIVE EQUIPMENT IS MANDATORY.

• FLAMMABLE GAS (H221): Explosive in air (15-28% concentration). KEEP AWAY FROM SOURCES OF IGNITION.

• GAS UNDER PRESSURE (H280): May explode if heated. DO NOT EXPOSE TO HEAT.

• TOXIC TO AQUATIC LIFE (H400): Harmful to aquatic organisms. DO NOT RELEASE TO THE ENVIRONMENT.

• REACTS WITH ACIDS: Violent exothermic reaction; produces heat and pressure. DO NOT MIX WITH ACIDS.

• REACTS WITH OXIDIZING AGENTS: May cause fire or explosion. DO NOT MIX WITH OXIDIZERS.

• HIGHLY SOLUBLE IN WATER: Exothermic dissolution; can cause boiling and splashing when dissolved.

• CORROSIVE TO METALS: Corrodes copper, zinc, aluminum, brass.

• SECURITY CONCERNS: Subject to anti-terrorism controls in many countries.

BEST PRACTICE RECOMMENDATIONS:

• Agriculture (Fertilizer): Use as anhydrous ammonia injection into soil; Apply during planting or pre-planting; Use specialized equipment; Follow soil testing recommendations; Depth: 15-20 cm; Avoid leaf contact; Use knife applicators; Apply when soil conditions are suitable.

• Refrigeration: Use in industrial refrigeration systems; Monitor for leaks; Regularly inspect equipment; Use ammonia-detection systems; Maintain proper oil and moisture levels.

• Cleaning: Use diluted solutions for cleaning (25% ammonia solution diluted 1:10); Provide adequate ventilation; Do not mix with chlorine bleach (produces toxic chloramine gas); Rinse surfaces after cleaning.

• Handling: Use in well-ventilated areas; Use full-face respirator (ammonia cartridge) or SCBA for high concentrations; Use chemical-resistant gloves (neoprene, nitrile, PVC); Use chemical goggles and face shield; Use protective clothing (acid-resistant). DO NOT WORK ALONE.

• Personal Protective Equipment: MANDATORY: SCBA or full-face respirator with ammonia cartridge, chemical-resistant gloves (neoprene, nitrile), safety goggles/face shield, acid-resistant protective clothing, safety boots.

• Emergency Response: Have emergency plan in place; Install ammonia detectors; Provide eyewash and emergency shower; Know evacuation routes; Train personnel in first aid; Have emergency response contacts posted.

• Storage: Store in pressure-rated containers; Store in well-ventilated, cool areas; Protect from heat and sunlight; Separate from incompatible materials; Use pressure relief devices; Ground all equipment; Regular inspection of containers and safety equipment; Security controls required.

• Spill Management: Evacuate area; Wear full protective equipment; Stop leak if safe; Use water fog to absorb gas; Ventilate area; Do not allow entry into drains or waterways; Report large spills to authorities.

• Disposal: Dispose of in accordance with local, regional, and national regulations; Hazardous waste; Use authorized disposal facilities; Neutralize with acid if required.

DETECTION METHODS:

AMMONIA vs ALTERNATIVES COMPARISON:

LEGAL DISCLAIMER:
The information provided in this document is based on our current knowledge and experience and is presented in good faith. However, as all conditions of use are beyond our control, it does not constitute a binding specification or warranty. This Technical Data Sheet is for informational purposes only. Users are responsible for testing the suitability for their own applications and for complying with all local, regional, and national regulations. For complete safety, storage, use, handling, waste, and regulatory compliance information, please refer to the official Safety Data Sheet (SDS/MSDS) provided by the manufacturer/supplier. Ammonia is a toxic, corrosive, and flammable gas; strict safety, handling, and security protocols must be followed at all times.