Phthalic Anhydride Prices Inch Up in China Amid Rising Feedstock Costs and Steady Output

Phthalic Anhydride Prices Inch Up in China Amid Rising Feedstock Costs and Steady Output

Patricia Jose Perez 15-Sep-2025

During the week ending September 12, 2025, phthalic anhydride prices in China rose modestly, reversing earlier declines. The increase was primarily driven by rebounding ortho-xylene costs and stable industrial naphthalene prices, which elevated production expenses.

Key Highlights:

  • Feedstock costs rebounded which supported the upward momentum.
  • Operating rates hovered around xxx in August xxxx.
  • Downstream plasticizer demand continued to be weak.
  • Cost driven price support is expected to continue.

The costs of Phthalic Anhydride have been trending slightly up since the second week of the September xxxx. One of the most important reasons behind the recovery was the improvement of ortho-xylene (OX) values, which had declined before but started to recover from the beginning of September. Prices of industrial naphthalene, another important feedstock, were normal during the whole period, thus offering a rather mixed but overall supportive cost environment for phthalic anhydride producers.

Most of the production sites in China kept their operating efficiency at or near the xxx mark. Thus, the supply of phthalic anhydride to the domestic market remained at the usual level and there...

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