Isobutene Market Size

Isobutene Market size is estimated at USD 31.1 billion in 2024 and is expected to reach USD 56.7 billion by the end of 2037, growing at around 4.7% CAGR during the forecast period i.e., between 2025-2037. In 2025, the industry size of isobutene is evaluated at USD 32.7 billion. Isobutene also known as 2-methylpropene or isobutylene is exhibiting widespread usage in sectors such as automobile, pharma, aerospace, antioxidants, and household products. The rise in the use of isobutene in the production of fragrance and gas odorization products is projected to boost market growth in the coming years. For instance, the gas odorant market is estimated to be valued at USD 480.8 million in 2025 and is foreseen to expand at a CAGR of 6.5% through 2037.

The increasing demand for high-octane fuels in modern car engines is driving the use of isobutene as a key ingredient in octane enhancers. The growing popularity of premium fuels including octane to improve engine efficiency and performance, and mitigate maintenance needs is positively influencing the isobutene market growth. Also, the rising focus on high-octane fuel production is driving investments in refining processes that optimize isobutene extraction. For instance, the U.S. Office of Energy Efficiency & Renewable Energy reveals that the sales of premium gasoline refiners took a hike to 30% in 2023 from 8% in 2008.