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Isobutylene Pricing, Demand and Supply Overview
Isobutylene is a C4 olefin recovered from refinery FCC streams or steam cracker C4 fractions, serving as the essential building block for MTBE gasoline oxygenate, butyl rubber, and polyisobutylene production. C4 stream feedstock costs, MTBE and butyl rubber sector demand, and regional refinery and cracker capacity all feed into the price.
Global isobutylene prices tracked close to the USD 0.72 to USD 0.90 per KG range projected for 2026, as C4 stream firming met steady derivative demand. US prices averaged USD 0.76 per KG in Q1 2026, up 8.6 percent from Q4 2025, as Middle East refinery disruptions tightened C4 stream supply and elevated production costs while pre-season MTBE and butyl rubber restocking supported consistent buying. China prices rose 7.3 percent, remaining the most affordable source on large domestic C4 access. Germany remained the highest-cost reporting region.
What is Isobutylene Price in August 2026?
Isobutylene prices held a firm tone through August 2026, tracking close to the Q1 2026 levels across all tracked regions, as tightened C4 stream supply from Middle East refinery disruptions and steady MTBE and butyl rubber sector demand continued to support the market.
- North America (US): US isobutylene prices held near USD 0.73 to USD 0.79 per KG, close to the USD 0.76 per KG recorded in Q1 2026, up 8.6 percent from Q4 2025, as Middle East refinery disruptions tightened C4 stream supply while pre-season MTBE synthesis and butyl rubber restocking supported the level.
- APAC (China): Chinese isobutylene prices held near USD 0.56 to USD 0.62 per KG, close to the USD 0.59 per KG recorded in Q1 2026, as large domestic C4 stream access continued to keep it the most affordable sourcing region globally.
- Europe (Germany): German isobutylene prices held near USD 0.97 to USD 1.03 per KG, close to the USD 1.00 per KG recorded in Q1 2026 and the highest among tracked markets, as high feedstock and energy costs continued to keep Germany the most expensive isobutylene market globally.
Isobutylene Price Forecast for 2026
The balance of supply and demand for isobutylene through the rest of 2026 leans moderately firm after the H2 2025 and Q1 2026 recovery. Crude oil and C4 stream costs firmed from Middle East refinery disruptions. Butyl rubber and polyisobutylene demand is recovering with automotive production and lubricant sector activity.
The main upside risk is sustained Middle East crude supply disruption alongside a broad automotive rubber and MTBE production recovery. The main downside risk is continued global crude oil softness from demand uncertainty that depresses C4 stream economics.
| Region | 2026 Price Range (USD/KG) | Outlook |
| Global Average | 0.72 - 0.90 | C4 stream firming and derivative demand support the tone |
| United States | 0.72 - 0.90 | Steady MTBE and butyl rubber demand holds it firm |
| China | 0.50 - 0.68 | Large C4 access keeps it the most affordable source |
| Germany | 0.94 - 1.12 | High feedstock and energy costs keep it the most expensive |
| India | 0.70 - 0.88 | Growing butyl rubber and MTBE demand holds a firm middle |
For the Quarter Ending March 2026
Isobutylene Prices Q1 2026:
- United States: USD 0.76/KG
- China: USD 0.59/KG
- Germany: USD 1.00/KG
- India: USD 0.77/KG
Isobutylene Prices in the United States
US isobutylene prices averaged USD 0.76/KG in Q1 2026, up 8.6% from USD 0.70/KG in Q4 2025. Middle East refinery disruptions tightened C4 stream supply and elevated production costs. Pre-season MTBE and butyl rubber sector restocking supported consistent buying through the quarter.
Why did the price of Isobutylene change in Q1 2026 in the United States?
Middle East refinery disruptions tightened C4 stream availability and elevated crude benchmarks sharply. Pre-season MTBE synthesis and spring gasoline blending procurement lifted buying. Butyl rubber and polyisobutylene sector restocking provided additional consistent demand support.
Isobutylene Prices in China
Chinese isobutylene prices averaged USD 0.59/KG in Q1 2026, up 7.3% from USD 0.55/KG in Q4 2025, the lowest among the tracked markets. Post-Lunar New Year MTBE and butyl rubber restocking lifted procurement. Firmer C4 stream and crude costs raised the production floor despite large domestic refinery C4 availability.
Why did the price of Isobutylene change in Q1 2026 in China?
Post-holiday MTBE and butyl rubber restocking lifted procurement from domestic derivative producers. Firmer C4 stream and crude feedstock costs raised the production cost floor. Large domestic refinery C4 access kept China the most competitive source.
Isobutylene Prices in Germany
German isobutylene prices averaged USD 1.00/KG in Q1 2026, up 8.7% from USD 0.92/KG in Q4 2025, the highest among the tracked markets. Higher C4 stream and energy costs elevated European isobutylene production expenses. Steady butyl rubber and specialty polyisobutylene demand maintained consistent buying.
Why did the price of Isobutylene change in Q1 2026 in Germany?
Higher C4 stream and energy costs elevated European isobutylene production expenses. Middle East refinery disruptions added import premiums to C4 feedstock. Steady butyl rubber, MTBE, and polyisobutylene demand maintained consistent procurement from European derivative producers.
Isobutylene Prices in India
Indian isobutylene prices averaged USD 0.77/KG in Q1 2026, up 8.5% from USD 0.71/KG in Q4 2025. Growing MTBE production and butyl rubber demand supported buying. Firmer import-linked crude and C4 stream costs raised the production floor through the quarter.
Why did the price of Isobutylene change in Q1 2026 in India?
Growing MTBE production and butyl rubber synthesis demand lifted procurement. Firmer import-linked crude and C4 stream feedstock costs raised the production floor. Strait of Hormuz freight premiums elevated the landed cost of imported isobutylene and C4 feedstock.
For the Quarter Ending December 2025
Isobutylene Prices Q4 2025:
- United States: USD 0.70/KG
- China: USD 0.55/KG
- Germany: USD 0.92/KG
- India: USD 0.71/KG
Isobutylene Prices in the United States
US isobutylene prices averaged USD 0.70/KG in Q4 2025, recovering from the Q3 low. Butyl rubber and polyisobutylene sector demand lifted buying from the low. Firmer crude benchmarks provided a cost floor near USD 0.70/KG.
Why did the price of Isobutylene change in Q4 2025 in the United States?
Recovering butyl rubber and polyisobutylene sector demand lifted procurement. Firmer crude benchmarks raised the C4 stream production cost floor. The market recovered from the Q3 seasonal low near USD 0.70/KG.
Isobutylene Prices in China
Chinese isobutylene prices averaged USD 0.55/KG in Q4 2025, recovering from the H1 low. Butyl rubber and MTBE sector demand supported buying. Firmer domestic crude costs held the production floor near USD 0.55/KG.
Why did the price of Isobutylene change in Q4 2025 in China?
Butyl rubber and MTBE derivative demand recovered from the H1 low, lifting procurement. Firmer domestic crude feedstock costs raised the C4 production floor. The market recovered to hold near USD 0.55/KG.
Isobutylene Prices in Germany
German isobutylene prices averaged USD 0.92/KG in Q4 2025, recovering from the Q3 level. Butyl rubber and polyisobutylene demand and firming crude costs supported the market. The recovery held the market near USD 0.92/KG into year-end.
Why did the price of Isobutylene change in Q4 2025 in Germany?
Butyl rubber and polyisobutylene demand recovered, lifting procurement from derivative producers. Firming crude benchmarks raised the C4 stream cost floor. The market recovered from the Q3 level near USD 0.92/KG.
Isobutylene Prices in India
Indian isobutylene prices averaged USD 0.71/KG in Q4 2025, recovering from the H1 low. Growing butyl rubber and MTBE demand supported buying. Firmer crude import costs raised the production floor near USD 0.71/KG.
Why did the price of Isobutylene change in Q4 2025 in India?
Growing butyl rubber and MTBE derivative demand lifted procurement from domestic and imported sources. Firmer crude import costs raised the C4 production floor. The market recovered from the H1 low near USD 0.71/KG.
Quarterly Isobutylene Price Trends
Global isobutylene prices declined through H1 2025 before recovering steadily through H2 and surging in Q1 2026. The average fell from USD 0.733/KG in Q1 2025 to USD 0.718/KG in Q2 and USD 0.702/KG in Q3, then recovered to USD 0.720/KG in Q4 and USD 0.780/KG in Q1 2026, a net gain of about 6.4% over the window. Crude oil benchmarks and C4 stream derivative demand drove the H1 softening and H2 recovery.
| Quarter | Price (USD/KG) | QoQ Change | Direction |
| Q1 2026 | 0.780 | +8.3% | ↑ Rising |
| Q4 2025 | 0.720 | +2.6% | ↑ Rising |
| Q3 2025 | 0.702 | -2.2% | ↓ Falling |
| Q2 2025 | 0.718 | -2.0% | ↓ Falling |
| Q1 2025 | 0.733 | - | - Stable |
| Q2 2026 | In Progress | - | - In Progress |
What was Isobutylene Price in 2025?
Isobutylene prices declined through H1 2025 before recovering through H2 on firmer crude oil and derivative demand. The global average opened at USD 0.733/KG in Q1 and closed near USD 0.720/KG in Q4, a full-year decline of about 1.8%. Crude oil softness and weak MTBE economics drove the H1 decline, while butyl rubber and polyisobutylene demand recovery supported H2 firming.
Isobutylene Prices in the United States in 2025
US prices fell from about USD 0.75/KG in Q1 2025 to USD 0.70/KG by Q4, a decline of 6.7%. Crude oil softness and weak MTBE production economics weighed on the market through H1 before butyl rubber demand supported the H2 recovery.
Isobutylene Prices in China in 2025
Chinese prices firmed from roughly USD 0.52/KG in Q1 2025 to USD 0.55/KG by Q4, a gain of 5.8%. Growing domestic MTBE and butyl rubber demand drove the H2 recovery. China held the lowest price level throughout the year.
Isobutylene Prices in Germany in 2025
German prices fell from about USD 0.98/KG in Q1 2025 to USD 0.92/KG by Q4, a decline of 6.1%. Soft crude-linked C4 stream economics and weak MTBE demand weighed on H1. Germany maintained the highest price level throughout.
Isobutylene Prices in India in 2025
Indian prices firmed from roughly USD 0.68/KG in Q1 2025 to USD 0.71/KG by Q4, a gain of 4.4%. Growing MTBE production and butyl rubber demand drove the H2 recovery. India held a firm and growing middle range throughout.
How We Can Help
Expert Market Research: Your Source for Real-Time Isobutylene Price Intelligence
Expert Market Research tracks isobutylene prices continuously across every major producing and consuming region. The team traces causation through crude oil and C4 stream feedstock economics, MTBE and butyl rubber sector demand cycles, and regional refinery and cracker operating rates. Contact Expert Market Research today for isobutylene pricing data, bespoke market analysis, and strategic procurement advisory.
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Frequently Asked Questions About This Report
MTBE and ETBE production as gasoline octane enhancers take the largest share. Butyl rubber synthesis for tyre innerliners and pharmaceutical stoppers, polyisobutylene for lubricant viscosity modifiers, and antioxidant intermediate synthesis also consume significant volumes.
The Q1 2026 average was USD 0.76/KG in the United States, USD 0.59/KG in China, USD 1.00/KG in Germany, and USD 0.77/KG in India. Germany remains the highest-priced market.
The global average fell from USD 0.733/KG in Q1 2025 to about USD 0.720/KG in Q4, a full-year decline of around 1.8%. H1 crude oil softness and weak MTBE economics drove the decline before H2 butyl rubber demand supported recovery.
Crude oil softness reduced C4 stream production costs and MTBE demand economics. Adequate C4 fraction supply from high refinery and cracker operating rates maintained a well-supplied market through the first half of the year.
The global average is expected in the USD 0.72 to 0.90/KG range for the rest of 2026, with continued recovery on Middle East supply disruptions and expanding butyl rubber and MTBE demand globally.
Germany sits highest on energy and C4 processing costs, the United States and India hold a firm middle on MTBE and butyl rubber demand, and China prices lowest on large domestic refinery and cracker C4 fraction availability.
This report is updated monthly. For real-time pricing intelligence, contact the Expert Market Research team directly.
Prices respond mainly to crude oil benchmarks, C4 stream availability from refinery operations, and MTBE and butyl rubber demand. Middle East supply events and seasonal gasoline blending cycles are key near-term price signals.
North America, Europe, and Asia Pacific host the largest C4 refinery and cracker streams. Any crude or refinery throughput change ripples across isobutylene markets within one to two quarters.
Buyers can use quarterly trends and forecasts to time MTBE and butyl rubber feedstock contracts, build cover when crude oil signals tightening, and monitor refinery throughput as the primary C4 stream availability signal.
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