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Caustic Soda Price in China Dips 0.3% to USD 94.80/tonne

Caustic soda prices in China slipped week on week while remaining above the 52-week low set in February.

Published 2026-09-07 · market: China

Caustic soda prices in China stood at USD 94.80/tonne as of 3 September 2026, down 0.3% from USD 95.08/tonne a week earlier. The monthly change was -0.1%, from USD 94.91/tonne on 4 August 2026.

Over the quarter the price rose 3.5%, from USD 91.64/tonne on 5 June 2026. Year on year the price fell 23.9%, from USD 124.55/tonne on 3 September 2025. The 52-week high was USD 124.97/tonne on 9 September 2025 and the 52-week low was USD 89.60/tonne on 4 February 2026.

On the supply side, the China Chlor-Alkali Industry Association reported on 4 July 2026 that North China chlor-alkali operating rates dropped to 65% due to heat-related power curbs and environmental inspections.

On the demand side, Shanghai Metals Market reported on 3 September 2026 that Shanxi alumina factories increased their caustic soda purchase price by 70 yuan/ton for September compared to August.

Caustic SodaChinaCaustic Soda priceCaustic Soda price in Chinacommodity pricesSeptember 2026

Prices are Claight's own series for Caustic Soda in China, 282 observations to 2026-09-03. Every figure in this report is computed from that series; percentage moves compare the same quoted market with itself. Causes were researched against public sources. Changes and averages are Claight Analysis.