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Home > DOP News > News Detail
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SunSirs: Costs Fell, and DOP Prices Fluctuated and Fell in July
July 31 2025 14:30:28SunSirs(John)

Plasticizer DOP prices fluctuated and fell in July 

According to the SunSirs’ commodity market analysis system, as of July 30, the price of DOP was 7,959.16 RMB/ton, a 3.63% decrease from the price of 8,259.17 RMB/ton on July 1. DOP production capacity declined in July, with the plasticizer DOP industry operating rate dropping to 40% in mid-July before recovering to 60% in late July. Plasticizer production decreased, leading to a volatile decline in plasticizer prices in July. The price of the raw material isooctanol fluctuated and consolidated, while the price of phthalic anhydride fluctuated and declined. This weakened cost support for plasticizers, reduced supply, and lowered costs, leading to a volatile decline in plasticizer prices.

DOP plant operating rates dropped significantly in July, from 60% in June to around 40% in the middle of the month, with a slow recovery in the latter half of the month. Overall, DOP production decreased in July, leading to a drop in plasticizer output. With the resumption of DOP production in the latter half of the month, DOP production is expected to increase in August, ensuring ample supply.

The price of raw material isooctanol fluctuated and consolidated in July

According to the SunSirs’ commodity market analysis system, as of July 30th, the price of isooctanol was 7,583.33 RMB/ton, a 0.44% increase from the high of 7,550 RMB/ton on July 1st. The price of isooctanol consolidated at a high level in July. The increase in maintenance at isooctanol plants in July led to a slight drop in the utilization rate of isooctanol equipment to less than 80%. This led to a decrease in isooctanol production and a reduction in supply. This reduced supply and weak demand led to a high price consolidation.

The price of raw material phthalic anhydride fluctuated and fell in July

According to the SunSirs’ Commodity Market Analysis System, as of July 30th, the price of OX method phthalic anhydride was 6,650 RMB/ton, a 3.16% decrease from the July 1st price of 6,866.67 RMB/ton. In July, OX prices and industrial naphthalene prices fluctuated downward, reducing the cost support for phthalic anhydride. Phthalic anhydride equipment continued to undergo maintenance in July, leading to a slight decrease in the operating rate of phthalic anhydride plants. While phthalic anhydride supply was sufficient, downstream plasticizer plants reduced their equipment operating rates, weakening demand for phthalic anhydride. With sufficient supply and weakening demand, phthalic anhydride prices fluctuated downward in July.

Future outlook:

Analysts of SunSirs believe that, in terms of cost, the price of isooctanol was fluctuating and consolidating, while the price of phthalic anhydride was fluctuating and falling, which has reduced the cost support of plasticizer DOP. In terms of supply, the operating rate of plasticizer companies has decreased, plasticizer output has decreased, and plasticizer supply has decreased. However, as plasticizer companies resumed production, DOP supply has increased. Overall, it is expected that supply will increase and costs will decrease in the future, and the price of plasticizer DOP is expected to fluctuate and fall.

If you have any inquiries or purchasing needs, please feel free to contact SunSirs with support@sunsirs.com.

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Energy
Chemical
Rubber & Plastics
Textile
Non-ferrous Metals
Steel
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Agricultural & Sideline Products

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