Price trend:

According to data monitored by SunSirs, caustic soda prices showed a downward trend throughout November. At the beginning of the month, the average market price of caustic soda in Shandong was 838 RMB/ton, while at the end of the month it was 780 RMB/ton, an increase of 6.92%, but a decrease of 23.6% compared to the same period last year.

On November 27th, the SunSirs Chemical Index was 765 points, unchanged from the previous day, down 45.36% from the highest point of 1,400 points (October 23, 2021) within the cycle, and up 27.93% from the lowest point of 598 points (April 8, 2020). (Note: The cycle refers to December 1, 2011 to present)

Market Analysis

According to data from SunSirs, caustic soda prices continued to decline throughout November. In Shandong, the mainstream market price for 32% ion-exchange membrane caustic soda was around 710-810 RMB/ton; in Jiangsu, prices remained stable at around 840-930 RMB/ton; and in Inner Mongolia, prices consolidated at around 2,250-2,350 RMB/ton (converted to 100% basis). At the beginning of the month, caustic soda supply was ample, with high operating rates, but downstream demand was weak, leading to a price drop. By the end of the month, supply was sufficient, and downstream alumina buyers showed limited activity, resulting in a stalemate in the market with most purchases made on an as-needed basis. The alumina market is expected to fluctuate with a slightly weaker trend in the near future. Furthermore, data showed that cumulative exports from January to October 2025 reached 2,944,386.820 tons, a year-on-year increase of 41.93%. The cumulative import volume from January to October 2025 was 338,803 tons, a year-on-year decrease of 94.57%.

Market outlook

According to analysts at SunSirs, caustic soda prices were weak in November. Domestic downstream buyers were mostly purchasing on an as-needed basis, and supply and demand dynamics were at play. Overall, it is expected that the caustic soda market will maintain cosolidating in the near future, with the specific trend depending on downstream market demand.

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