Predicting the top caustic soda (sodium hydroxide) suppliers in 2025 involves considering current market leaders, industry trends, and potential growth areas. While the exact ranking may vary, the following companies are likely to remain key players in the global caustic soda market due to their production capacity, market share, and strategic positioning:

Other positive factors include high oil prices meaning big demand and the drop in the cost of production and materials has meant that many companies have been able to trim billions of dollars from major projects.

List of caustic soda caustic soda manufacturer, a diverging demand pattern in caustic soda’s end markets can offset the dynamics of PVC operations due to counter cyclicality of caustic soda and PVC pricing benefitting as an integrated producer. European chlor-alkali capacity has been rationalise since the ban of mercury cells in 2025, which has supported the regional caustic soda price.