In September, the domestic vinyl acetate market followed a trend of initial strength, subsequent weakness, and a final reversal. In the early part of the month, prices rose steadily, supported by firm upstream raw material costs and expectations of supply contraction due to partial unit maintenance shutdowns. By mid-to-late month, downstream end-user willingness to take delivery gradually weakened, transactions for high-priced inventory stalled, upward momentum faded, and prices pulled back from highs. In late September, multiple planned maintenance shutdowns on the supply side were implemented. The market refocused on expected volume reductions from concentrated maintenance in October, reigniting expectations of tighter supply. This boosted market sentiment and caused prices to rebound and reverse course.
Since mid-to-late August, the glacial acetic acid market has rallied continuously after hitting bottom. This rise was driven by intertwined factors across raw materials, supply, and demand, with transaction centers stepping up gradually. From the current methanol supply-demand perspective, the Middle East conflict exhibits characteristics of persistence and stalemate, continually disrupting methanol supplies and shipping schedules from the region. As a result, imported methanol’s ability to supplement the domestic market remains constrained, providing strong support for the center of gravity of methanol prices. Glacial acetic acid is a traditional major downstream product of methanol. Factories relying on externally purchased methanol are mostly concentrated in North and Central China; once new capacity in South China comes online, external procurement demand will increase further. On the cost side, rising methanol prices directly push up raw material costs for factories reliant on external purchases, significantly increasing corporate cost pressure. However, simultaneously, the supply-demand structure of the glacial acetic acid market itself has shifted, with marginal improvements in supply-demand balance and restored industry bargaining power, ensuring that overall corporate profits remain somewhat guaranteed. Under the combined effect of rising raw material costs and improved supply-demand dynamics, the price floor for glacial acetic acid has been further solidified.
Regarding the supply side of glacial acetic acid, recent industry operations have shown concentrated volatility. Some production units experienced unplanned load reductions and temporary shutdowns due to equipment failures, leading to a continuous tightening of market supply. Meanwhile, the commissioning progress of new capacity in Guangdong has fallen short of expectations. To date, these units have not officially produced commercial volumes, failing to provide incremental supply to the market, resulting in a tight spot supply situation.
On the ethylene front, extremely high methanol prices have led many MTO (Methanol-to-Olefins) producers to postpone restarts, exacerbating domestic supply shortages. Additionally, crude oil breaking the $100/barrier provided macroeconomic tailwinds, expanding the uptrend in ethylene prices. However, fluctuations in derivative products associated with some mainstream producers increased available spot resources in September. Coupled with declining acceptance of high ethylene prices by key downstream buyers such as styrene and PVC, the upward momentum narrowed. In the international (USD-denominated) market, maintenance at Hyundai’s cracking units in South Korea intensified tightness, driving fixed-price transactions higher.
Synthesizing these factors, tight supply of upstream raw materials for vinyl acetate has pushed up production costs, forming strong cost-side support. Simultaneously, difficulty in procuring ethylene and acetic acid has led multiple vinyl acetate producers to enter maintenance cycles. Specific plans are detailed below:
Table 1: Summary of Vinyl Acetate Unit Maintenance Plans in China for October 2026 (Unit: 10,000 tons)
| Producer | Process Type | Capacity | Start Date | End Date | Duration (Days) | Loss Volume | Reason |
|---|---|---|---|---|---|---|---|
| Inner Mongolia Shuangxin | Calcium Carbide Method | 27 | 2026/10/4 | 2026/10/29 | 25 | 1.3 | Planned Maintenance |
| Guangxi Huayi | Ethylene Method | 30 | 2026/9/30 | 2026/10/15 | 15 | 0.9 | Planned Maintenance |
| Celanese | Ethylene Method | 30 | 2026/10/20 | 2026/11/09 | 20 | 1.6 | Planned Maintenance |
| Shanghai Petrochemical | Calcium Carbide Method | 10 | 2026/10/22 | 2026/11/06 | 15 | 0.4 | Planned Maintenance |
Data Source: Chempricehub Information
Based on October maintenance plans, a total of four vinyl acetate units in China will enter planned maintenance cycles, covering both calcium carbide and ethylene methods. These shutdowns are concentrated around October, creating a significant impact on spot supply. Additionally, Fujian Haiquan’s 200,000-ton/year unit may operate at half-load, while Hunan Xiangwei’s unit shows no intention of restarting. Effective domestic supply of vinyl acetate will clearly shrink in October, making the reduction in supply an established fact. The combination of constrained raw material supply and concentrated unit maintenance creates a dual resonance, heating up expectations of tighter spot availability. Market bullish sentiment is strong, with some enterprises in Nanjing leading price increases by 600 RMB/ton. Domestic vinyl acetate market sentiment has been boosted, holders’ willingness to sell low has diminished, and prices have returned to the high range.
Looking ahead, multiple vinyl acetate units will shut down simultaneously in October, with some maintenance extending into November. Short-term domestic operating rates will remain low, and the tight spot supply pattern will continue. On the cost side, several cracking units in South Korea will enter maintenance in October, coupled with the shutdown of a naphtha cracking unit in Shandong. This will sustain tight cargo conditions in the Northeast Asian shipping market, providing strong support for the USD-denominated ethylene market. Meanwhile, glacial acetic acid prices may remain at elevated levels due to the resonance of supply-demand and cost factors, continuing to underpin vinyl acetate prices. On the demand side, orders during the traditional peak season have fallen short of expectations, and end-users resist high raw material prices, limiting the release of rigid demand. Supported by both cost pressures and supply contraction, vinyl acetate market prices may maintain high-level oscillations. However, weak downstream procurement follow-through limits the momentum for further sharp increases. Future focus should be placed on maintenance restarts and raw material trends.
Comments
0