Caustic soda prices across major Asian markets remained firm in the first half of October 2025, supported by balanced supply-demand dynamics and defensive buying from heavy industries, despite localized pressures from weak automotive and textile sectors. Overseas buyers should monitor regional divergences, particularly China's inventory adjustments and India's sustained industrial demand, which are likely to keep prices consolidated in the near term.
Regional price trends
In China, pricing was mixed. Shandong Province saw the sharpest decline, driven by falling alumina prices that squeezed downstream margins and encouraged spot-driven procurement. Jiangsu Province and Inner Mongolia remained firm. Oversupply and producer efforts to clear inventory ahead of the National Day holiday contributed to a subdued pricing environment.
India's caustic soda sector continued to perform well, supported by strong industrial production and expanding aluminum output. Textile exports remained weak due to soft global demand and tariff concerns, but domestic consumption in food processing, manufacturing, and sewage treatment held up. Improving margins in the chemical sector helped maintain steady procurement levels.
Demand drivers and constraints
Indonesia's demand was more limited. Passenger vehicle sales fell 15.1% year-on-year, reducing caustic soda consumption in alumina applications. However, stable construction consumption offset softer industrial demand. Purchasers remained cautious, focusing on core volumes amid broader economic uncertainty.
Japan's caustic soda sector remained cautious. Q3 began with a downturn in industrial exports, linked to ongoing trade frictions with the USA. Domestic sentiment stayed buoyant, with nearly 90% of households expecting price increases over the next 12 months. This supported buying in food processing and manufacturing, while fiscal stimulus and anticipated reflation under new leadership also boosted domestic consumption.
Supply-chain and logistics signals
Singapore supported regional price stability. The manufacturing index improved in September, driven by the electronics sector. Growth in new orders and input purchases signaled greater optimism in industrial sectors, particularly downstream alumina. Stable electricity tariffs and cautious inventory management by chemical clients helped maintain stable operating costs and purchasing behaviors.
What buyers should watch
According to ChemAnalyst, caustic soda prices are expected to remain in consolidation mode. While domestic demand in some regions remains weak and inventories high, uninterrupted consumption in heavy industries and defensive buying trends will support prices. Buyers should track alumina price movements in China and India's industrial production data for near-term price signals.
Source: Read the original report | Published: October 16, 2025