Isobutane E943b
aerating agent β Primarily petroleum/natural gas.
2-Methylpropane (CβHββ)
CAS: 75-28-5
Factual Regulatory Reference
This database provides factual regulatory information compiled from official government sources. It does not constitute medical, nutritional, or safety advice. Regulatory status varies by country and is subject to change. Always refer to your local regulatory authority for the most current information.
? Did You Know?
Isobutane occurs naturally in Natural gas and Petroleum deposits. Many people consume it daily without realizing it's also a listed food additive.
Beyond food, Isobutane is also used in cosmetics, medicine, industrial applications, household products. Its versatility makes it one of the most multi-purpose chemical compounds in everyday life.
In the EU, Isobutane has a "quantum satis" authorization β Latin for "as much as needed." This means there's no specific maximum limit; manufacturers use only what's technologically necessary.
Detailed Regulatory Assessment
European Union (EFSA)
Authorized as propellant
United States (FDA)
Approved as propellant and aerating agent
Japan (MHLW)
Approved as propellant
Acceptable Daily Intake (ADI)
International Standard (JECFA)
mg/kg body weight per day
European Standard (EFSA)
Everyday Perspective
For a 60kg adult, this limit is roughly equivalent to consuming:
Natural Occurrence
An isomer of butane with a branched structure. Colorless, highly flammable gas used as a propellant in food aerosol products. Similar to butane but with slightly different physical properties.
Manufacturing
Extracted from natural gas or produced during petroleum refining. Separated from n-butane and other hydrocarbons through fractional distillation and isomerization processes.
Applications Beyond Food
Aerosol propellant in hairsprays, deodorants, shaving cream
Aerosol propellant in medical sprays
Refrigerant (R-600a), lighter fuel, chemical feedstock
Refrigerant in modern fridges, aerosol products