On January 4, the business-to-business isooctanol-to-DOP commodity price ratio index stood at 111.69, up 0.54 points from the previous day. Compared to the cycle high of 147.70 points (February 7, 2022), it decreased by 24.38%, while compared to the cycle low of 91.74 points (November 3, 2015), it increased by 21.75%. (Note: The cycle refers to the period from January 1, 2012, to the present.) Isooctanol prices rose strongly, DOP prices increased, and the downward pressure on DOP weakened while upward momentum strengthened.

On January 4, the business-to-business phthalic anhydride-to-DOP commodity price ratio index was 89.01, up 0.49 points from the previous day. Compared to the cycle high of 113.13 points (October 16, 2022), it decreased by 21.32%, while compared to the cycle low of 45.17 points (July 27, 2021), it increased by 97.06%. (Note: The cycle refers to the period from January 1, 2012, to the present.) Phthalic anhydride prices rebounded and rose, DOP prices increased strongly, and the upward momentum for DOP strengthened while downward pressure weakened.

On January 5, the DOP market in Jiangsu Province experienced volatile growth, with quotations reaching 7,400 yuan per ton. In Shandong Province, the DOP market also showed volatile growth, with quotations at 7,250 yuan per ton. In Zhejiang Province, DOP prices rose with volatility, reaching 7,500 yuan per ton.

On January 5, the price of phthalic anhydride, a raw material for DOP, fluctuated upward, and isooctanol prices also rose with volatility. The cost of DOP raw materials increased significantly. DOP production capacity utilization improved, while downstream market conditions remained moderate, with demand primarily driven by rigid needs. Downstream customers showed limited purchasing willingness, and transaction prices were subject to negotiation. DOP quotations ranged from 7,250 to 7,500 yuan per ton, reflecting volatile growth. Actual transaction prices rose, with favorable factors for DOP strengthening and unfavorable factors weakening. The DOP market exhibited strong consolidation.