Synergy can Disposal of Sulphur Dioxide (SO₂)

Overview

  • Chemical Formula: SO₂

  • Description: Sulphur dioxide is a coloruless gas with a pungent, irritating odour. It is a significant pollutant and a key component in the formation of acid rain.

  • Sources: Sulphur dioxide is produced from the burning of fossil fuels (coal and oil) and the smelting of mineral ores that contain sulphur. It is also released naturally from volcanic eruptions.

Label Information

  • Contents: The canister contains sulphur dioxide (SO₂).

  • UN Number: 1079

    • Purpose of UN Number: The United Nations number 1079 is used to identify sulphur dioxide for transport and emergency response purposes.

  • Hazard Symbol:

    • Toxic Symbol: The label features a toxic hazard symbol (typically a skull and crossbones) indicating that sulphur dioxide is a poisonous gas.

    • Corrosive Symbol: Often, the label will also feature a corrosive symbol (a substance dripping onto a hand or metal) due to its highly reactive nature.

  • Warning Information:

    • Respiratory Protection: The label warns users to employ proper respiratory protection when handling the gas to avoid inhalation.

    • Handling Instructions: Handle the gas with care due to its toxic and corrosive properties. Use in well-ventilated areas or within controlled environments with appropriate safety equipment.

    • Emergency Procedures: The label may include first aid instructions in case of exposure, such as moving the affected individual to fresh air, rinsing with water if skin contact occurs, and seeking immediate medical attention.

Physical and Chemical Properties

  • Appearance: colourless gas.

  • Odor: Pungent, irritating odour.

  • Boiling Point: -10°C (14°F)

  • Melting Point: -72.7°C (-98.86°F)

  • Density: Heavier than air, with a density of 2.927 kg/m³ at 0°C.

Health Effects

  • Acute Exposure: Inhalation of sulphur dioxide can cause irritation of the nose, throat, and lungs, leading to symptoms such as coughing, shortness of breath, and a feeling of chest tightness. High concentrations can lead to severe respiratory distress or pulmonary edema.

  • Chronic Exposure: Long-term exposure to low levels can lead to chronic respiratory conditions such as bronchitis, asthma, and emphysema.

  • Skin and Eye Contact: Sulphur dioxide is also irritating to the skin and eyes, potentially causing burns and severe irritation.

Environmental Impact

  • Acid Rain: When released into the atmosphere, sulphur dioxide can react with water vapour to form sulfuric acid, contributing to acid rain. Acid rain can have devastating effects on aquatic ecosystems, forests, and buildings.

  • Air Quality: Sulphur dioxide is a significant air pollutant and can contribute to the formation of particulate matter (PM) and other air pollutants.

Safety Measures

  • Storage: Store in a cool, dry, and well-ventilated place away from incompatible substances such as strong oxidisers and acids. Ensure storage areas are equipped with proper ventilation and spill containment systems.

  • Handling: Use appropriate leak detection methods and regularly inspect equipment. Handle with care to prevent leaks and spills. Use in areas with proper ventilation or within fume hoods.

  • Protective Equipment: Use personal protective equipment (PPE) such as respirators, gloves, eye protection, and flame-resistant clothing when handling sulphur dioxide. Ensure that all personnel are trained in handling toxic and corrosive gases and emergency response procedures.

Regulatory Information

  • Occupational Exposure Limits: Various regulatory bodies have established exposure limits for sulphur dioxide. For example, the UK Workplace Exposure Limits (WELs) set an 8-hour Time-Weighted Average (TWA) limit and a Short-Term Exposure Limit (STEL).

  • Transport Regulations: When transporting sulphur dioxide, it must be properly labeled and packaged according to international regulations, such as those set by the International Air Transport Association (IATA) and the International Maritime Organisation (IMO).

Sulphur dioxide (SO₂) is a highly toxic and corrosive gas with significant health and environmental impacts. Proper handling, storage, and usage instructions are critical to prevent exposure and environmental contamination. Adequate ventilation, respiratory protection, and adherence to safety protocols are essential when using or storing this gas. Always refer to the manufacturer's guidelines and emergency procedures provided by CK Gas Products Ltd for detailed safety information.