Butane (C4H10) is a colourless and highly flammable hydrocarbon gas that has an odour similar to natural gas. Butane has a crucial role across various industries, including energy, chemicals, pharmaceuticals and food processing. It is commonly used in aerosol propellants and the manufacturing of chemicals for solvents, rubber and plastics. Butane gas is used as a fuel in commercial and residential boiler systems and commonly used goods like cigarette lighters, portable stoves and torches. Although it is a very common gas, Butane poses significant safety risks due to its explosiveness and health impacts.
Butane is produced by refining crude oil and natural gas and can be a by-product of biomass and landfill gas. As butane is a highly flammable gas, it can ignite easily when exposed to heat, flame, embers and sparks, posing a high risk of explosions. Due to this risk, butane should be used in a well-ventilated area, away from possible explosion risks, and not in small enclosed environments. In transport, butane is stored as a liquid under pressure as it quickly transforms from a liquid to a gas at normal temperatures and pressure. Keeping butane as a liquid under pressure reduces the risk of explosion, making it easier to store and use in various applications and vaporise for use when needed.
As well as the risk of explosion, butane can be very aversive to human health. When inhaled, butane can cause dizziness, nausea, loss of consciousness and headaches. People working in and around applications with a risk of butane should be particularly aware of these symptoms, especially when using machinery and equipment.
Butane has a melting point of -138 Celsius and a boiling point of -1 Celcius.
- TWA (ppm) 600
- TWA (mg/m3) 1450
- STEL (ppm) 750
- STEL (mg/m3) 1810
- CAS number – 106-97-8
Fun Fact – Butane can cause instant frostbite if it touches skin in its liquid state — due to rapid vaporisation and extreme cold.
Applications used in
- Energy Industry: Butane is used as a fuel to generate heat and power. It can fuel gas stoves, heaters, and boilers in residential and commercial buildings.
- Petroleum Industry: Butane is a by-product of crude oil refining, used as a feedstock for producing other chemicals and fuels and is used in the production of gasoline, liquefied petroleum gas (LPG), and other petrochemicals.
- Chemical Industry: Butane is used as a feedstock in the chemical industry to produce chemicals like butadiene, isobutylene, and other polymers.
- Pharmaceutical Industry: Butane is used as a propellant in pharmaceutical products, such as inhalers and topical sprays.
- Food and Drink Industry: Butane is used as a food propellant in aerosol food products like whipped cream, cooking sprays, and small refrigeration systems, such as portable refrigerators and air conditioners.
Why Butane Gas Detection Is Critical - Installing butane gas detectors in enclosed spaces, industrial zones, and storage areas is essential for leak detection, early warning, and compliance with safety standards.
Butane FAQ'S
Is butane dangerous to work with?
Yes. It’s highly flammable and harmful if inhaled. Proper detection and ventilation are critical.
What industries require butane gas detectors?
Industries use butane boilers, aerosol propellants, or chemical feedstocks, especially in energy, food processing, and pharmaceuticals.
How can I detect a butane leak?
Install butane gas detectors in high-risk areas to monitor concentrations and alert operators before levels become hazardous.
Is butane heavier than air?
Yes, it sinks to low areas, making floor-level detection equipment particularly important.