2-Methyl-1,3-Butadiene Price Trend and Forecast 2026-2027

No market paid more for 2-Methyl-1,3-Butadiene in Q2 2026 than the United States: USD 1,704/MT, up 5.2% from USD 1,620 in Q1, as tight C5 feedstock availability and firm tire-grade polyisoprene demand kept the market well supported. The global average climbed too, up 4.2% to USD 1,596/MT from USD 1,531, as a persistent structural deficit in natural rubber supply kept pushing tire manufacturers toward synthetic and blended alternatives. H2 2026 should see the global average settle into the USD 1,580-1,650/MT range, with tire and butyl rubber demand providing the main support against tight C5 hydrocarbon feedstock availability.

Everyone in the industry just calls 2-Methyl-1,3-Butadiene Isoprene. It’s a highly volatile, flammable liquid hydrocarbon, recovered from the C5 fraction of naphtha steam cracking, or made on-purpose through isopentane dehydrogenation. Its dominant use is as the monomer feedstock for polyisoprene rubber, a synthetic elastomer that closely mirrors natural rubber’s molecular structure and works as a partial substitute in tire manufacturing, especially for premium and specialty tires. Beyond that, it feeds styrene-isoprene-styrene block copolymers for adhesives and sealants, isobutylene-isoprene butyl rubber for inner tubes and tire innerliners, and various specialty elastomer and fragrance intermediate applications. C5 feedstock availability, tire and butyl rubber demand, and the price of natural rubber, which isoprene tracks closely as a substitute good, all feed directly into the price.

2-Methyl-1,3-Butadiene Price Forecast for 2026

The 2-Methyl-1,3-Butadiene market looks firmly tight through H2 2026. A structural deficit in natural rubber supply, now in its fifth consecutive year as ageing Southeast Asian plantations underdeliver, has pushed tire manufacturers to lean more heavily on polyisoprene and other synthetic alternatives. Limited C5 feedstock availability from naphtha crackers has kept a lid on how fast new isoprene supply can respond.

A deeper natural rubber supply shortfall, one that accelerates the shift toward synthetic substitutes faster than producers can add capacity, is the main upside risk. On the flip side, a broader slowdown in global tire production, particularly in the automotive original equipment segment, would slow further price gains.

For the Quarter Ending June 2026

2-Methyl-1,3-Butadiene Prices Q2 2026: 

• United States: USD 1,704/MT
• China: USD 1,480/MT
• Japan: USD 1,612/MT
• South Korea: USD 1,587/MT

2-Methyl-1,3-Butadiene Prices in United States

Tight C5 feedstock availability and strong tire-grade polyisoprene demand kept the US market firm in Q2 2026: prices up 5.2% to USD 1,704/MT from USD 1,620 in Q1. The natural rubber supply deficit kept pushing manufacturers toward synthetic alternatives.

Why did the price of 2-Methyl-1,3-Butadiene change in Q2 2026 in United States?

The substitution story keeps playing out the same way: tire manufacturers lean further into polyisoprene every quarter the natural rubber shortfall persists, and with C5 feedstock staying tight, there’s little slack to meet that demand without prices moving.

2-Methyl-1,3-Butadiene Prices in China

China remained the most affordable of the four tracked markets even as prices rose 3.1% in Q2 2026 to USD 1,480/MT from USD 1,435 in Q1, supported by firm domestic polyisoprene and butyl rubber demand and steady C5 feedstock costs.

Why did the price of 2-Methyl-1,3-Butadiene change in Q2 2026 in China?

China’s scale is doing its job here. Domestic demand for polyisoprene and butyl rubber stayed firm, but large integrated capacity kept the gain modest compared to what smaller markets saw for similar demand growth.

2-Methyl-1,3-Butadiene Prices in Japan

Steady domestic polyisoprene production and firm tire-grade demand from major regional manufacturers pushed Japanese prices up 4.1% in Q2 2026, to USD 1,612/MT from USD 1,548 in Q1.

Why did the price of 2-Methyl-1,3-Butadiene change in Q2 2026 in Japan?

Steady is the word for Japan this quarter. Operating rates held, tire-grade demand from major manufacturers stayed firm, and the underlying natural rubber deficit kept doing what it’s done all year: quietly pushing buyers toward the synthetic alternative.

2-Methyl-1,3-Butadiene Prices in South Korea

Firm butyl rubber and tire-grade polyisoprene demand from major domestic producers drove South Korean prices up 4.3% in Q2 2026, to USD 1,587/MT from USD 1,521 in Q1.

Why did the price of 2-Methyl-1,3-Butadiene change in Q2 2026 in South Korea?

South Korea’s tire innerliner producers kept butyl rubber demand firm, tire-grade polyisoprene offtake held its pace, and a modest firming in C5 feedstock costs was enough to nudge prices higher without any single factor standing out.

For the Quarter Ending March 2026

2-Methyl-1,3-Butadiene Prices Q1 2026: 

• United States: USD 1,620/MT
• China: USD 1,435/MT
• Japan: USD 1,548/MT
• South Korea: USD 1,521/MT

2-Methyl-1,3-Butadiene Prices in United States

C5 feedstock stayed tight, substitution toward polyisoprene kept accelerating as the natural rubber shortfall deepened, and together those two forces lifted US prices 4.9% in Q1 2026, to USD 1,620/MT from USD 1,545 in Q4 2025.

Why did the price of 2-Methyl-1,3-Butadiene change in Q1 2026 in United States?

This is the same substitution story accelerating, not a new one. C5 feedstock tightened further, tire manufacturers leaned harder into polyisoprene as the natural rubber shortfall deepened, and producers had every reason to pass the higher cost straight through.

2-Methyl-1,3-Butadiene Prices in China

China posted the sharpest quarterly move among tracked markets in Q1 2026: prices up 7.1% to USD 1,435/MT from USD 1,340 in Q4 2025, on strong restocking ahead of the Lunar New Year and accelerating polyisoprene substitution demand.

Why did the price of 2-Methyl-1,3-Butadiene change in Q1 2026 in China?

China posted the sharpest move in the whole batch this quarter, and it took two things happening at once: heavy pre-holiday restocking from tire and butyl rubber producers, layered on top of substitution demand that was already accelerating away from natural rubber.

2-Methyl-1,3-Butadiene Prices in Japan

Firm domestic polyisoprene production and steady tire-grade demand drove Japanese prices up 4.7% in Q1 2026, to USD 1,548/MT from USD 1,478 in Q4 2025.

Why did the price of 2-Methyl-1,3-Butadiene change in Q1 2026 in Japan?

Japan’s producers simply ran harder this quarter, lifting operating rates to keep pace with steady tire-grade demand. The natural rubber deficit sitting in the background did the rest, as it has all year.

2-Methyl-1,3-Butadiene Prices in South Korea

Firm butyl rubber demand and a modest C5 feedstock cost increase drove South Korean prices up 5.0% in Q1 2026, to USD 1,521/MT from USD 1,449 in Q4 2025.

Why did the price of 2-Methyl-1,3-Butadiene change in Q1 2026 in South Korea?

South Korea had a quiet quarter, relatively speaking. Butyl rubber demand held firm, C5 feedstock costs firmed only modestly, and steady polyisoprene offtake was enough on its own to support the gain.

Quarterly 2-Methyl-1,3-Butadiene Price Trends

2-Methyl-1,3-Butadiene prices firmed steadily, and increasingly sharply, across every quarter tracked here, driven by a persistent structural deficit in natural rubber supply that’s pushed tire manufacturers toward polyisoprene and other synthetic alternatives. The average rose from USD 1,250/MT in Q1 2025 to USD 1,296 in Q2, USD 1,370 in Q3, USD 1,453 in Q4, then accelerated to USD 1,531 in Q1 2026 and USD 1,596 in Q2 2026, a net gain of about 27.7% over the window. Deepening natural rubber substitution demand and tightening C5 feedstock availability explain the sustained, accelerating climb.

What was 2-Methyl-1,3-Butadiene Price in 2025?

2025 was a strong year for 2-Methyl-1,3-Butadiene prices, which firmed sharply as a structural deficit in natural rubber supply, now in its fifth consecutive year, pushed tire and rubber manufacturers toward polyisoprene and other synthetic alternatives. Worldwide, the average climbed from about USD 1,250/MT in Q1 to USD 1,453 by Q4, a full-year gain of about 16.2%. Accelerating substitution demand away from natural rubber, and tightening C5 feedstock availability, explain most of the trend.

2-Methyl-1,3-Butadiene Prices in United States in 2025

US prices firmed from about USD 1,340/MT in Q1 2025 to USD 1,545 by Q4, up roughly 15.3%. Tightening C5 feedstock availability and accelerating polyisoprene substitution demand drove the year-long rise.

2-Methyl-1,3-Butadiene Prices in China in 2025

Chinese prices posted the sharpest gain among tracked markets, firming from roughly USD 1,120/MT in Q1 to USD 1,340 by Q4, up about 19.6%. Large integrated capacity additions couldn’t fully offset surging domestic polyisoprene and butyl rubber demand.

2-Methyl-1,3-Butadiene Prices in Japan in 2025

Japanese prices firmed from about USD 1,290/MT in Q1 to USD 1,478 by Q4, up roughly 14.6%, on steady tire-grade demand from major domestic manufacturers.

2-Methyl-1,3-Butadiene Prices in South Korea in 2025

South Korean prices firmed from about USD 1,250/MT in Q1 to USD 1,449 by Q4, up roughly 15.9%, on firm butyl rubber demand from domestic tire innerliner production.

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Tracking 2-Methyl-1,3-Butadiene prices is a continuous effort for us, covering everywhere from the big producing hubs to the major consuming markets. We trace causation through C5 feedstock economics, tire and butyl rubber demand cycles, and the natural rubber supply and demand balance that the isoprene market tracks closely as a substitute good. Get in touch for pricing data, a tailored market analysis, or help planning your procurement strategy.