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Product Name: Oxygen
Synonyms: Compressed Oxygen, Liquefied Oxygen, Medical Oxygen, O2
Recommended Use: Industrial, medical, laboratory gas, welding gas
Manufacturer Information: Listed on packaging or supply documents
Emergency Contact: Refer to national poison control or emergency response number
UN Number: 1072 (Compressed), 1073 (Liquefied)
CAS Number: 7782-44-7
EC Number: 231-956-9
Hazard Classification: Oxidizing gas, Gas under pressure
Label Elements: GHS04 (gas cylinder), GHS03 (flame over circle)
Signal Word: Danger
Hazard Statements: May cause or intensify fire; supports combustion. Contains gas under pressure; may explode if heated.
Precautionary Statements: Keep away from combustible materials and oils. No smoking near cylinder. Protect from sunlight. Store in well-ventilated area.
Routes of Exposure: Inhalation
Main Symptoms: Over-oxygenation causes irritation of respiratory tract and headaches. Supports rapid combustion, increasing risk of burns.
PPE Symbol: Wear safety goggles and insulated gloves.
Chemical Identity: Oxygen
Purity: 99.5% minimum (industrial and medical grade can reach 99.99%)
Impurities: May contain small traces of Argon or Nitrogen
Molecular Formula: O2
Molecular Weight: 32.00 g/mol
Inhalation: Remove to fresh air immediately. Administer oxygen if breathing is difficult. Call emergency services if symptoms persist.
Skin Contact: In case of contact with liquefied gas, warm gently with lukewarm water. Do not rub affected area.
Eye Contact: Rinse with copious amounts of water. Seek medical assistance for irritation or injury.
Ingestion: Not applicable for gas form.
Most Important Symptoms: High concentrations can dry out respiratory passages. Accident exposure to cold liquefied oxygen can cause frostbite.
Note for Responders: Never use oil-based ointments after exposure to cold burn, and avoid sources of ignition during rescue.
Suitable Extinguishing Media: Use water spray, dry chemical, carbon dioxide, or foam extinguisher for surrounding fire only — oxygen itself does not burn.
Unsuitable Extinguishing Media: Do not use water jet directly on gas leak under pressure.
Specific Hazards: Gas supports combustion; increases flammability and risk of explosion. Pressurized containers may rupture when heated.
Protective Equipment: Firefighters wear self-contained breathing apparatus and full protective clothing.
Special Information: Evacuate area. Cool cylinders with flooding quantities of water from a safe distance. Remove ignition sources.
Personal Precautions: Keep unprotected persons away. Wear appropriate personal protective equipment.
Environmental Precautions: Ventilate area. Prevent buildup of oxygen-rich atmospheres.
Methods for Clean Up: Ventilate spill area. Stop leak if safe to do so. Remove all ignition sources and combustible materials.
Emergency Procedures: Alert trained response team. Move cylinders to a safe, ventilated location if possible.
Handling Requirements: Open valves slowly. Never lubricate, oil, or grease valves, fittings, or regulators. Prevent spillage and backflow into container.
Safe Storage Conditions: Store away from flammable, combustible, and reducing materials. Keep cylinders upright and secured to prevent falling.
Temperature Controls: Store in cool, dry, well-ventilated place away from direct sunlight and sources of heat.
Incompatible Materials: Oils, greases, organic materials, acids, and metallic powders.
Other Guidelines: Use equipment rated for oxygen service. Avoid any contact with oil or grease, which can ignite explosively in pure oxygen.
Occupational Exposure Limits: No established OSHA or ACGIH limits for oxygen, but avoid atmospheres exceeding 23.5% as fire risk increases sharply.
Engineering Controls: Use with adequate local or general exhaust ventilation. Monitor oxygen concentrations in confined spaces.
Personal Protective Equipment (PPE): Safety glasses with side shields, flame-resistant gloves, protective footwear. Thermal protection for handling liquefied gas.
Respiratory Protection: Self-contained breathing apparatus if exposure to oxygen-enriched atmospheres is likely.
Hygiene Measures: Wash hands thoroughly after handling. Change contaminated clothing immediately.
Appearance: Colorless, odorless gas; pale blue liquid at low temperatures
Odor: Odorless
Boiling Point: -183 °C (-297.4 °F)
Melting Point: -218.4 °C (-361.1 °F)
Vapor Pressure: 1 atm at 90.2 K
Solubility in Water: Slightly soluble
Density: 1.429 g/L at 0 °C
Flammability: Non-flammable but strongly supports combustion
Critical Temperature: -118.4 °C
Critical Pressure: 49.8 atm
Chemical Stability: Stable under recommended storage and handling conditions.
Reactivity: Extremely reactive with combustible materials and reducing agents.
Hazardous Reactions: Violent reaction with oils, greases, many organic and inorganic substances.
Conditions to Avoid: Avoid heat, flame, sparks, static discharge, contact with incompatible substances.
Hazardous Decomposition Products: None expected under normal conditions.
Polymerization: Does not occur.
Acute Toxicity: Not toxic under normal concentrations; high concentrations displace nitrogen, causing oxygen toxicity above 75%.
Routes of Exposure: Inhalation is primary route, with symptoms ranging from coughing, respiratory irritation, dizziness, and convulsions at elevated levels.
Chronic Effects: Prolonged exposure to oxygen-enriched atmospheres can lead to lung irritation and increased risk of respiratory infections.
Skin and Eye Effects: Contact with liquid or rapidly expanding gas can cause severe frostbite or cold burns.
Carcinogenicity: Not classifiable as a human carcinogen.
Other Data: Over-oxygenation may worsen symptoms for individuals with certain lung conditions.
Potential for Sensitization: None reported.
Environmental Fate: Oxygen released into air dissipates rapidly; no persistent environmental impact.
Aquatic Toxicity: No known toxicity, but can cause localized increases in water oxygenation, affecting aquatic organisms.
Bioaccumulation: Not applicable.
Mobility in Soil: Highly mobile, does not accumulate.
Other Adverse Effects: May intensify combustion of natural organic matter in case of accidental discharge.
Waste Treatment Methods: Empty cylinders completely before disposal according to local regulations. Do not vent unused gas in confined spaces.
Disposal of Packaging: Cylinders are returnable and should be sent back to supplier. Non-returnable cylinders must be disposed of according to hazardous waste requirements.
Additional Advice: Never attempt to repair or reuse empty cylinders unless trained and authorized.
UN Number: 1072 (Compressed Oxygen), 1073 (Liquefied Oxygen)
Proper Shipping Name: Oxygen, Compressed or Oxygen, Refrigerated Liquid
Hazard Class: 2.2 (Non-flammable gas), 5.1 (Oxidizer)
Packing Group: Not applicable
Transport Labels: Cylinder (2.2), Oxidizer (5.1)
Special Precautions for User: Secure cylinders upright in transport. Protect from physical damage, heat, and direct sunlight. Emergency temperature monitoring for refrigerated liquids.
ADR/RID/IMDG/IATA: Regulated for international transportation.
OSHA Status: Hazardous under OSHA Hazard Communication Standard.
TSCA Inventory: Listed
EPA SARA Title III Sections 311/312: Immediate (acute) health hazard, fire hazard
EU Regulations: Subject to REACH registration; classified under CLP as oxidizing gas, compressed gas
Other Legislation: Complies with US FDA and EU Pharmacopoeia requirements for medical use. All storage and handling must follow local code for compressed gases.
Labeling Requirements: Hazard pictograms, signal word, hazard and precautionary statements as per GHS.
Restrictions: Many jurisdictions restrict sales to trained professionals, and use in medical sector requires prescription.
