Recently, the supply in China's phthalic anhydride spot market has been tight. Most manufacturers are maintaining normal operations but have low inventories and are limiting orders. Factory quotations have been increasing for several consecutive days. Based on the average difference indicators, the current trend of phthalic anhydride is clearly upward. However, from the perspective of the price range over cycles, the 60-day, 3-month, and 1-year cycle prices of phthalic anhydride are all at high levels, indicating limited room for further increases. The transmission support from the upstream and downstream industrial chains is still acceptable, and industry participants can pay attention to the dynamics of the supply as needed.
I. Table of Mean Difference Changes
| Average Difference Type | Value on 2026.09.14 | Value on 2026.09.13 | Direction of Change |
|---|---|---|---|
| 5-day Average Difference (D5) | 110 | 110 | Flat |
| 10-day Average Difference (D10) | 260 | 245 | + |
| 20-day Average Difference (D20) | 190 | 160 | + |
II. Signal Status Determination
The current three mean difference values are all positive, with the 10-day and 20-day mean differences increasing from the previous day, while the 5-day mean difference remains unchanged. This is a clear signal of an upward trend in China.
III. Trend Direction Conclusions
The current trend in phthalic anhydride prices is clearly upward. The reasons are: the 5-day, 10-day, and 20-day average difference values are all positive, coupled with continuous price increases from manufacturers in China and tight supply, indicating a clear upward trend.
IV. Positional Spatial Reference
Phthalic anhydride 60-day, 3-month, and 1-year cycle prices are all at high levels, corresponding to the 5th tier of the 5-tier scale, with limited room for further increases.
5. Spot Market Dynamics
On September 14, 2026, the phthalic anhydride quotation from Tongling Chemical Industry Group in China was 10,200 CNY/ton, an increase of 200 CNY/ton from the previous quote. The supply is tight, and sales are limited.
On September 14, 2026, Shijiazhuang Bailong Chemical’s phthalic anhydride quote was 10,200 CNY per ton, up 200 CNY per ton from the previous quote. Inventory is limited, and most of the product is for internal use.
Changzhou Xinyang phthalic anhydride facility utilization rate is around 60%, with low inventory. Previously, it had suspended quotations and is currently accepting limited orders.
VI. 1-Year Price Trend of Phthalic Anhydride
VII. Risk Warning
The above analysis is for reference only and does not constitute trading advice.
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