Japan’s Vinyl Chloride Monomer (VCM) market shifted from a 4.39% decline in February 2026 to a strong March surge due to Middle East geopolitical tensions disrupting naphtha supply. February saw soft downstream demand and stable operations keeping VCM prices around USD 1,415/MT. In March, the effective closure of the Strait of Hormuz triggered force majeure declarations and production cuts across Japan, South Korea, China, and Southeast Asia, tightening ethylene availability. Rising naphtha and ethylene costs pushed EDC and VCM prices higher, while post-holiday demand from packaging and manufacturing added bullish momentum. The market is expected to remain volatile with sustained upward price pressure.
Japan’s Vinyl Chloride Monomer (VCM) market transitioned sharply from a bearish trend in February 2026 to a war-driven bullish outlook in March, as escalating geopolitical tensions in the Middle East disrupted the ethylene value chain. In February, VCM prices declined by 4.39% month-on-month in Japan, pressured by weak downstream demand and seasonal slowdowns linked to Lunar New Year holidays across key Asian markets. PVC processors maintained cautious procurement strategies amid subdued construction activity, while stable plant operations and smooth logistics ensured adequate supply. Despite rising upstream ethylene dichloride (EDC) costs, the lack of strong buying interest kept VCM prices under pressure, with Ex-Ichihara values averaging USD 1,415/MT in Japan.
However, the VCM market dynamic shifted dramatically entering March, as the effective closure of the Strait of Hormuz triggered widespread disruptions in naphtha supply, a critical feedstock for steam crackers. Asia, heavily reliant on Middle Eastern naphtha, witnessed immediate operational challenges. Several major producers across Japan, South Korea, China, and Southeast Asia reduced operating rates or declared force majeure. Steam crackers in the region, already running at reduced rates due to weak olefin margins, faced further cuts of up to 20%, significantly tightening ethylene availability.
Major industry players responded swiftly to the supply shock. Facilities in Japan began lowering ethylene output, while companies in South Korea and Southeast Asia reduced run rates or advanced maintenance shutdowns. In Singapore and Indonesia, force majeure declarations highlighted the severity of logistical disruptions. The ripple effect extended across the petrochemical chain, with downstream derivatives such as PVC also witnessing production curtailments and planned VCM price hikes.
Simultaneously, feedstock costs surged sharply. Naphtha prices spiked, driving a steep increase in ethylene prices across Asia. The CFR Northeast Asia ethylene benchmark rose significantly, reflecting tightening supply and heightened buying urgency. As EDC production costs escalated, VCM producers faced mounting cost pressure, which they began passing downstream.
This supply-side shock coincided with improving post-holiday VCM demand, particularly from packaging and manufacturing sectors, further intensifying upward price momentum. Buyers, anticipating prolonged disruptions and limited spot availability, shifted toward restocking, adding to bullish sentiment in the VCM market.
Looking ahead, as per ChemAnalyst, VCM prices are expected to rise significantly through March 2026. The ongoing constraints in ethylene and naphtha supply, coupled with elevated freight costs and geopolitical uncertainty, are likely to sustain upward pressure on the VCM prices. Unless maritime flows stabilize, the VCM market is poised for continued volatility, with tight supply conditions and rising production costs driving a firm VCM pricing trajectory across Asia.
