Published: 2025-08-14 19:32 Source: Editor: Wu Li
Introduction: After the increase in DINP market supply, the market price showed a phased downward trend. As of August 14 (the same below), the DINP price in Jiangsu market was at 8,000 yuan/ton, a decrease of 600 yuan/ton compared with the end of June, and the price gap with the DOP market narrowed to 250 yuan/ton.
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DINP market price drop and price difference of various products vary
Comparison of domestic DINP and DOP prices in 2025 (yuan/ton)
Data source:
Between July and August, the price of DINP in East China showed a downward trend, and the current market price has dropped to 8,000 yuan/ton. During the period, the price high was 8,850 yuan/ton and the price low was 7,950 yuan/ton, with a price fluctuation of 10.69%.
the DINP market price remained high for a long time from May to June , the cost pressure on downstream end users increased. Some users have adjusted their formulas and reduced the use of high-priced DINP. In addition, coupled with the impact of the consumption off-season, market demand support continued to be weak. In addition, related products DOP and DOTP products also had profit-sharing shipments, driving down the prices of industrial products. As the DINP price loosened, the price gap between DINP and DOP and DOTP has gradually narrowed to the range of 200-250 yuan/ton.
The profitability of incremental DINP supply is gradually declining
Figure 2 Domestic DINP supply trend (10,000 tons) Figure 3 Domestic DINP profit changes (yuan/ton)
Data source: Data source:
As can be seen from the above figure, the domestic DINP supply was at a high level in July and August. The current market spot supply is abundant, and spot inventory has accumulated. However, with the increase in supply and the decline in prices, the profit margin of the DINP market has also declined. The average profit in August was 398 yuan/ton, a month-on-month decrease of 26.16%. However, compared with other related products, DINP is still a more profitable variety among plasticizer products.
DINP prices remain under pressure as supply and demand remain inconsistent
From the perspective of relevant raw material markets, the phthalic anhydride market is expected to see an increase in supply, while the octanol market may also fluctuate downward. From the current supply and demand perspective, DINP production in August is expected to be close to 40,000 tons, and there is also accumulated spot inventory in the market. Overall, there is still significant supply pressure, and subsequent shipments will still be mainly based on active inventory clearance. However, from the perspective of current end-users in the market, there is only existing demand, and most buying is mainly weekly replenishment at low prices. Therefore, the overall DINP market price is still under pressure and on the decline.
