Chemical Formula: C₄H₆

Description: 1,3-Butadiene is a colourless gas with a mild aromatic odour. It is a hydrocarbon and is highly flammable and reactive.

Label Information

Contents: The canister contains 1,3-butadiene (C₄H₆).

UN Number: 1010

Purpose of UN Number: The United Nations number 1010 is used to identify 1,3-butadiene for transport and emergency response purposes.

Hazard Symbols

Flammable Symbol: The label features a flammable hazard symbol indicating that 1,3-butadiene is highly flammable and can form explosive mixtures with air.

Health Hazard Symbol: Often, the label will also include a health hazard symbol (typically an exclamation mark) indicating the substance's potential to cause serious health effects upon exposure.

Warning Information

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

Handling Instructions: Handle the gas with extreme care due to its flammable and potentially carcinogenic 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 to fresh air if inhalation occurs and seeking immediate medical attention.

Physical and Chemical Properties

Appearance: Colourless gas.

Odour: Mild aromatic odour.

Boiling Point: -4.4°C (24.1°F)

Melting Point: -108.9°C (-164°F)

Density: Lighter than air, with a density of 0.651 g/L at 0°C.

Health Effects

Acute Exposure: Inhalation of 1,3-butadiene can cause respiratory irritation, dizziness, headache, and potentially more severe effects like unconsciousness or asphyxiation. Skin and eye contact can cause irritation.

Chronic Exposure: Long-term exposure can lead to chronic respiratory conditions and potential damage to the nervous system, liver, and reproductive system. It is also classified as a probable human carcinogen.

Reactivity and Compatibility

Polymerisation: Can spontaneously polymerise, especially in the presence of heat or light, leading to potential hazards.

Incompatible Materials: Avoid contact with strong oxidising agents and acids. 1,3-butadiene can react violently with such substances.

Environmental Impact

Air and Water: 1,3-butadiene can contribute to air pollution if released into the environment. It can form ground-level ozone and other harmful compounds.

Ecosystems: The substance can be harmful to aquatic life and may cause long-term adverse effects in the environment.

Safety Measures

Storage: Store in a cool, dry, and well-ventilated place away from incompatible substances. 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 1,3-butadiene. Ensure that all personnel are trained in handling flammable and potentially carcinogenic gases and emergency response procedures.

Regulatory Information

Occupational Exposure Limits: Various regulatory bodies have established exposure limits for 1,3-butadiene. These limits are set to protect workers from the harmful effects of the gas.

Transport Regulations: When transporting 1,3-butadiene, it must be properly labelled and packaged according to international regulations, such as those set by the International Air Transport Association (IATA) and the International Maritime Organisation (IMO).