Sodium hydroxide solid (Caustic soda) price December 2025 and outlook (see chart below)
- North America:US$0.49/KG, 2.1% up
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Sodium hydroxide solid (Caustic soda) price index
This post is a summary of the Sodium hydroxide solid (Caustic soda) price developments. The price developments of Sodium hydroxide solid (Caustic soda) are expressed in US$ prices converted FX rates applicable at the time when the price was valid. Sodium hydroxide solid (Caustic soda) price index developments are calculated from multiple separate sources of data to ensure statistical accuracy.
The outlook for Sodium hydroxide solid (Caustic soda) prices is generated from different inputs including:
- Very recent price developments of immediate cost drivers of Sodium hydroxide solid (Caustic soda) prices
- Recent price developments of underlying feedstocks which drive the price of Sodium hydroxide solid (Caustic soda)
- Market futures for both cost drives and feedstocks of Sodium hydroxide solid (Caustic soda) prices
- Adjustment of current supply/demand imbalances in the Sodium hydroxide solid (Caustic soda) market
- Longer term trends in likely demand conditions
What is Sodium Hydroxide (solid) and what is it used for
Sodium hydroxide (NaOH), commonly called caustic soda or lye, is a strong inorganic base that normally appears as white crystalline solids (flakes, prills, pellets or cast blocks). In industry it is used to make soaps and detergents, pulp and paper, rayon and other textiles, alumina refining (Bayer process), petroleum refining, chemical synthesis (salts, dyes, bleaches), water-treatment pH control, and powerful degreasing/cleaning formulations; it is also sold as drain and oven cleaners for household use. NaOH is highly caustic — contact with skin or eyes causes chemical burns — and dissolving the solid in water is strongly exothermic, so handling precautions are required.
How is Sodium Hydroxide (solid)
As a material, solid NaOH is a white, odorless crystalline substance (melting point ~318 °C) sold in forms such as flakes, pellets (prills), powder or cast blocks; it is very soluble in water and the dissolution releases substantial heat. Industrially, NaOH is produced by the chlor-alkali electrolytic process (chlorine is a co-product): the process first yields aqueous NaOH which is then concentrated and evaporated to make solid grades. Typical commercial purities are high (industrial/technical grades ≥98%), and packaging ranges from small sacks to jumbo bags or bulk shipments for liquid caustic.
How large is the global market for Sodium Hydroxide (solid)
Market estimates vary by source and definition (solid vs. overall caustic soda in all forms), but recent industry reports place the global caustic-soda/NaOH market value in the mid-to-high tens of billions of US dollars: for example, estimates around USD 46–47 billion for 2024 are commonly cited, with modest year-on-year growth expected. Note that some reports separately size regional segments (Asia-Pacific is the largest by value and volume).
Where is Sodium Hydroxide produced
Production is geographically concentrated near major chlor-alkali facilities and feedstock/industrial clusters. China is the largest producer (holding a very large share of global capacity), and other major production regions include North America, Europe, and parts of Asia (e.g., Taiwan, Japan, South Korea, India). Significant manufacturers include global chemical groups and regional chlor-alkali producers; major exporting countries in recent trade data include China and India, while the United States is a large producer and exporter as well. Production is typically colocated with chlorine/alkali complexes and with consumers such as alumina refineries, pulp mills, and chemical plants.