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Chemical Name: Ammonia (Anhydrous)
Common Names: Liquid Ammonia, Anhydrous Ammonia
Formula: NH3
Form: Colorless liquid under pressure or cold temperatures
Smell: Sharp, pungent odor instantly recognized even in low concentrations
Uses: Fertilizer production, industrial refrigeration, cleaning agents
Health Effects: Strongly corrosive to tissue; causes burns on contact with skin or eyes; inhaling vapors can injure respiratory tract and lungs
Flammability: Flammable gas under pressure; explosive mixtures can form with air
Immediate Reactions: Pain, burns, coughing, wheezing, shortness of breath, eye damage
Chronic Effects: Long-term exposure can irritate or damage respiratory system
Environmental Threat: Toxic to aquatic life, alters pH balance in water bodies
Main Component: Ammonia, NH3, typically over 99% by weight
Common Impurities: Trace water, potential minor contaminants depending on source or storage
Source Materials: Haber-Bosch process using atmospheric nitrogen and hydrogen gas
Inhalation: Remove to fresh air immediately; monitor breathing and seek medical care immediately
Skin Contact: Remove contaminated clothing, flood skin with water for at least 15 minutes
Eye Contact: Rinse eyes gently but thoroughly with plain water; do not rub; call for urgent help
Swallowing: Do not induce vomiting; drink water if conscious, medical attention is crucial
Suitable Extinguishing Agents: Water fog (not direct spray), dry chemical powder, carbon dioxide
Dangers: May create explosive mixtures with air; containers may rupture if heated; toxic gases may form
Special Equipment: Firefighters wear self-contained breathing apparatus and chemical-resistant clothing
Precautions: Evacuate area; cool tanks and containers with water from safe distance if involved in fire
Evacuation: Move people upwind and keep them well clear of spill or leak
Containment: Stop leak if safe; use water spray to knock down vapors
Clean-Up: Trained personnel using proper protective equipment; ventilate area; prevent run-off to water
Reporting: Notify local emergency services and authorities as required by law
Storage Conditions: Keep containers tightly closed and in a well-ventilated area; store upright; temperature controlled to prevent pressure buildup
Handling Practices: Avoid breathing vapor; prevent contact with skin, eyes, and clothing
Separation: Keep away from acids, halogens, oxidizers, and combustible materials
Transport Precautions: Use only dedicated and compatible equipment; label containers clearly
Ventilation: Local exhaust ventilation at points of emission; keep area open when possible
PPE: Chemical splash goggles, face shield, impervious gloves, long sleeves, chemical-resistant apron
Respiratory Protection: Supplied-air respirators in high concentrations or confined areas
Exposure Limits: Regulatory limits set by agencies such as OSHA, NIOSH, ACGIH; commonly 25 ppm for 8-hour time-weighted average
Appearance: Colorless liquid when compressed or refrigerated
Boiling Point: Around -33.3°C (at atmospheric pressure)
Melting Point: -77.7°C
Vapor Pressure: Very high at room temperature
Solubility: Extremely soluble in water, produces alkaline solution
Odor Threshold: Less than 5 ppm can already be noticed by most people
Chemical Stability: Stable under recommended storage and handling conditions
Incompatible Materials: Strong acids, halogens, chlorine, hypochlorites, oxidizers
Hazardous Decomposition: May produce nitrogen oxides and hydrogen if heated to decomposition or during fire
Reactivity Hazards: Violent reactions possible with certain chemicals; explosive mixtures with air above 15-28% concentration
Routes of Exposure: Inhalation, skin absorption, eye contact, ingestion
Acute Toxicity: Severe respiratory irritation, potentially fatal in high doses or confined exposures
Chronic Toxicity: Prolonged inhalation can cause bronchitis, pneumonia, or permanent lung injury
Carcinogenicity: Not listed as carcinogen by major agencies; main concern is acute corrosive injury
Other Effects: Sensitization not common, but repeat exposure increases risk of severe injury
Aquatic Toxicity: Highly toxic to fish and aquatic organisms
Persistence: Rapidly converted by bacteria but can spike nitrogen levels to dangerous threshold
Bioaccumulation: Not prone to building up in most living tissues, but can disrupt ecosystem balance
Environmental Mobility: Easily moves through water; can volatilize from moist soil or water, raising air and water pollution risks
Waste Handling: Neutralize solutions before disposal; never pour into sewers or surface water
Solid Waste: Evacuate remaining ammonia gas under proper controls; dispose of containers as hazardous waste
Incineration: Not suitable due to risk of producing hazardous fumes
Legal Requirements: Comply with local, state, and federal regulations for disposal of hazardous chemical waste
Shipping: Pack in approved pressure vessels designed for ammonia transport
Classification: Classified as a dangerous good by international and national transport agencies
Labeling: Clearly marked with hazard class, proper shipping name, and inhalation hazard warnings
Accident Protocols: Immediate leak containment and notification to authorities during transport incidents; dedicated emergency response required for all major ammonium releases
Workplace Safety: Covered by OSHA, EPA, and international hazard communication standards
Threshold Quantities: Facilities above certain storage thresholds must file risk management plans
Permits: Storage and use often require specific environmental and fire codes compliance
Community Right-to-Know: Laws enforce public disclosure of hazards and incident reporting for facilities storing large amounts
