SunSirs: With Increased Supply and Rising Costs, DOP Prices in November Initially Fell and Then Rose
December 11 2025 14:47:32     SunSirs (John)
DOP prices in November initially fell and then rose
According to SunSirs' commodity price analysis system, as of November 30th, the price of DOP was 7,009.16 RMB/ton, showing a fluctuating trend of initial decline followed by an increase compared to the price of 7,009.16 RMB/ton on November 1st. Compared to the price of 6,950.83 RMB/ton on November 17th, the price increased by 2.31%. In November, the price of isooctanol fluctuated upwards, leading to an increase in DOP production costs and subsequently an increase in DOP prices. In November, the operating rate of DOP manufacturers increased slightly to 70%, resulting in increased DOP production. The combination of increased production costs and increased supply led to a fluctuating price trend for plasticizer DOP in November, with an initial decline followed by an increase.
In November, the price of the raw material isooctanol fluctuated and rose
According to SunSirs' commodity market analysis system, as of November 30th, the price of isooctanol was 6,566.67 RMB/ton, a fluctuating increase compared to the price of 5,950 RMB/ton on November 1st, representing a 10.36% increase. Some companies' isooctanol production facilities resumed operation after maintenance, leading to an increase in the operating rate of isooctanol plants to 80%, resulting in increased supply. The price of propylene fluctuated upwards, increasing the cost of isooctanol. In November, the increased supply of isooctanol, coupled with cost support, strengthened the upward momentum of isooctanol prices, although downward pressure still existed. The increase in isooctanol prices led to higher costs for plasticizers, while downward pressure on DOP prices persisted, although upward support was also increasing.
In November, the price of phthalic anhydride, a raw material, fluctuated and declined
According to SunSirs' commodity price analysis system, as of November 30th, the price of phthalic anhydride was 5,766.67 RMB/ton, a fluctuating decrease compared to the price of 5,950 RMB/ton on November 1st, representing a drop of 3.08%. In November, phthalic anhydride continued its downward trend, with prices fluctuating downwards. The price of the raw material, OX, also decreased, leading to lower costs. Phthalic anhydride manufacturers slowly increased their operating rates, resulting in ample supply. Downstream companies increased their equipment operating loads, maintaining demand for phthalic anhydride. The combination of lower costs and sustained demand led to the fluctuating decrease in phthalic anhydride prices in November, increasing the downward pressure on the price of the plasticizer DOP.
Market Forecast:
According to SunSirs' plasticizer product data analyst, regarding costs, the price of isooctanol had risen, while the price of phthalic anhydride had fluctuated downwards. The cost of DOP plasticizer still faced downward pressure, but upward support was increasing. In terms of supply, the operating rate of plasticizer enterprises had slightly increased to 70%, leading to increased plasticizer production and a greater supply of plasticizers. Looking ahead, with increased supply and rising costs, the price of DOP plasticizer is expected to fluctuate and stabilize.
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