Disposal of Ethane (C₂H₆)

Chemical Formula: C₂H₆

Description: Ethane is a colourless, odourless gas that is a simple hydrocarbon. It is highly flammable and primarily used as a fuel and a petrochemical feedstock.

Label Information

  • Contents: The canister contains ethane (C₂H₆).

  • UN Number: 1035

    • Purpose of UN Number: The UN number 1035 is used to identify ethane for transport and emergency response purposes.

Hazard Symbols

  • Flammable Symbol: The label features a flammable hazard symbol, indicating that ethane is highly flammable and can form explosive mixtures with air.

  • Health Hazard Symbol: Although ethane is generally not considered toxic, a health hazard symbol may still be included to caution against potential asphyxiation in confined spaces.

Warning Information

  • Respiratory Protection: The label advises the use of proper respiratory protection to avoid inhalation, particularly in confined spaces where oxygen displacement can occur.

  • Handling Instructions: Handle ethane with care due to its flammability. Ensure the gas is used in well-ventilated areas or within controlled environments to minimise the risk of fire or explosion.

  • Emergency Procedures: In case of exposure, move the affected individual to fresh air and seek medical attention if breathing difficulties arise. In the event of a fire, use appropriate fire-extinguishing methods.

Physical and Chemical Properties

  • Appearance: Colourless gas.

  • Odour: Odourless.

  • Boiling Point: -88.5°C (-127.3°F)

  • Melting Point: -182.8°C (-297°F)

  • Density: Lighter than air, with a density of 1.26 g/L at 0°C.

Health Effects

  • Acute Exposure: Inhalation of ethane in high concentrations can displace oxygen, leading to dizziness, headache, or even asphyxiation in extreme cases.

  • Chronic Exposure: Ethane is not known to cause long-term health effects; however, repeated exposure to high concentrations in enclosed areas should be avoided to prevent oxygen deficiency.

Reactivity and Compatibility

  • Reactivity: Ethane is relatively stable but can become reactive under certain conditions, such as exposure to heat or open flames, leading to the risk of explosion.

  • Incompatible Materials: Ethane should not be stored or used near strong oxidising agents, as it can react violently with such materials.

Environmental Impact

  • Air and Water: Ethane contributes to air pollution as a volatile organic compound (VOC), which can lead to the formation of ground-level ozone.

  • Ecosystems: While not highly toxic, ethane can contribute to environmental degradation if released in large quantities, particularly through its role in ozone formation.

Safety Measures

  • Storage: Store in a cool, dry, and well-ventilated area, away from heat sources and incompatible substances. Ensure that storage facilities are equipped with proper ventilation and fire suppression systems.

  • Handling: Implement leak detection methods and regularly inspect equipment. Handle ethane with care, particularly in environments where ignition sources are present.

  • Protective Equipment: Use appropriate personal protective equipment (PPE), including flame-resistant clothing, gloves, and eye protection when handling ethane. Ensure that personnel are trained in emergency response procedures related to flammable gases.

Regulatory Information

  • Occupational Exposure Limits: Ethane is typically regulated by guidelines that set exposure limits to protect workers from the risk of asphyxiation in confined spaces.

  • Transport Regulations: When transporting ethane, it must be correctly labelled and packaged according to international regulations, such as those established by the International Air Transport Association (IATA) and the International Maritime Organisation (IMO).