The Global Solid NaOH Market was valued at USD 40.2 Billion in 2024 and is projected to reach USD 55.8 Billion by 2030, growing at a Compound Annual Growth Rate (CAGR) of 5.6% during the forecast period (2024–2030). This robust growth is being driven by expanding applications in pulp & paper manufacturing, water treatment processes, alumina production, and the soap & detergent industry, alongside increasing demand from emerging economies.

As a fundamental chemical building block, sodium hydroxide (caustic soda) is critical to countless industrial processes. The market’s trajectory is shaped by a combination of established chemical giants and strategic regional players. In this blog, we profile the Top 10 Companies in the Solid NaOH Industry—leaders in production capacity, technological innovation, and global supply chain integration.

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🔟 1. Dow Chemical

Headquarters: Midland, Michigan, USA
Key Offering: High-Purity Flake, Solid Beads, and Technical Grade NaOH

Dow is a global leader in chemical production, with a significant market share in the caustic soda industry. Its integrated chlor-alkali facilities produce vast quantities of Solid NaOH, which is essential for Dow’s downstream products and external sales across multiple sectors.

Innovation & Sustainability Focus:

• Investment in membrane cell technology for energy-efficient production

• Commitment to circular economy principles in chlorine and caustic soda cycles

• Global supply chain optimization to serve diverse industrial customers

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9️⃣ 2. Olin Corporation

Headquarters: Clayton, Missouri, USA
Key Offering: Olin® Caustic Soda (Flake, Solid, Rayon Grade)

Olin Corporation is one of the world’s largest merchant market caustic soda producers. With a strong presence in North America and Europe, Olin operates extensive chlor-alkali production networks, supplying high-quality NaOH to industries ranging from chemicals to water treatment.

Innovation & Sustainability Focus:

• Leading producer using environmentally advanced membrane cell technology

• Strategic logistics network ensuring reliable delivery to key markets

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8️⃣ 3. Westlake Corporation (formerly Axiall)

Headquarters: Houston, Texas, USA
Key Offering: Caustic Soda Flake, Solid, and Dense Grade

Westlake, following its acquisition of Axiall, is a major integrated producer of vinyls and chlor-alkali products. The company’s large-scale production capacity makes it a key supplier of Solid NaOH to the North American market and export destinations.

Innovation & Sustainability Focus:

• Vertical integration from salt brine to finished caustic soda products

• Focus on operational efficiency and cost-competitive production

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7️⃣ 4. Formosa Plastics Corporation

Headquarters: Kaohsiung, Taiwan
Key Offering: Solid NaOH for Plastics, Chemicals, and Textiles

Formosa Plastics is a global petrochemical powerhouse and a leading NaOH producer in Asia. Its massive production complexes, particularly in Taiwan and the U.S., supply caustic soda critical for its own PVC manufacturing and external industrial customers.

Innovation & Sustainability Focus:

• Large-scale, integrated production facilities ensuring supply stability

• Continuous process optimization to reduce environmental footprint

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6️⃣ 5. Shin-Etsu Chemical

Headquarters: Tokyo, Japan
Key Offering: High-Purity Solid NaOH for Electronics and Specialty Chemicals

Shin-Etsu is the world’s largest PVC manufacturer and a significant producer of chlor-alkali products. The company’s advanced chemical processes yield high-quality Solid NaOH that serves demanding applications in electronics, semiconductors, and fine chemicals.

Innovation & Sustainability Focus:

• Leadership in high-purity grades for advanced technology sectors

• Commitment to stringent quality control and sustainable manufacturing practices

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5️⃣ 6. Tosoh Corporation

Headquarters: Tokyo, Japan
Key Offering: Caustic Soda Flake, Solid, and Liquid for Various Industries

Tosoh is a leading Japanese chemical company with a strong chlor-alkali business division. It produces a wide range of NaOH products, catering to both domestic Japanese demand and international markets, with a focus on quality and reliability.

Innovation & Sustainability Focus:

• Development of specialized NaOH grades for niche applications

• Active in R&D for environmentally friendly production technologies

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4️⃣ 7. Hanwha Solutions/Chemical

Headquarters: Seoul, South Korea
Key Offering: Industrial and Reagent Grade Solid NaOH

Hanwha Chemical is a major player in the Asian chemical industry, with substantial caustic soda production capacity. The company supplies Solid NaOH to a diverse base of customers in South Korea and across the Asia-Pacific region.

Innovation & Sustainability Focus:

• Expansion of production capabilities to meet growing regional demand

• Integration with petrochemical and advanced materials operations

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3️⃣ 8. Solvay S.A.

Headquarters: Brussels, Belgium
Key Offering: Specialty and Standard Grade Solid NaOH

Solvay is a global leader in advanced materials and specialty chemicals, with a significant historical presence in the soda ash and caustic soda markets. The company provides high-quality NaOH solutions tailored to specific industrial needs in Europe and beyond.

Innovation & Sustainability Focus:

• Focus on sustainable chemistry and reducing the carbon footprint of production

• Development of application-specific NaOH products for performance-driven markets

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2️⃣ 9. BASF SE

Headquarters: Ludwigshafen, Germany
Key Offering: Solid NaOH for Chemical Synthesis and Industrial Processes

While known as the world’s largest chemical producer, BASF is also a key manufacturer of basic chemicals like caustic soda. Its integrated Verbund sites ensure a reliable supply of NaOH for its internal consumption and for sale to external customers.

Innovation & Sustainability Focus:

• Leveraging Verbund system for efficient, waste-minimizing production

• Commitment to carbon-neutral growth and sustainable resource management

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1️⃣ 10. Aditya Birla Chemicals (Grasim Industries)

Headquarters: Mumbai, India
Key Offering: Caustic Soda Flake and Solid for Pulp & Paper, Alumina, Textiles

Aditya Birla Chemicals, part of the Grasim Industries conglomerate, is India’s leading producer of caustic soda. The company dominates the Indian market and is a significant exporter, playing a crucial role in supplying NaOH to fast-growing South Asian industries.

Innovation & Sustainability Focus:

• Modernization of plants with membrane cell technology for higher efficiency

• Strategic expansion to capitalize on India’s industrial growth

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🌍 Outlook: The Future of Solid NaOH Is Driven by Industrial Demand and Sustainability

The Solid NaOH market is experiencing steady growth, underpinned by its indispensable role as a primary chemical feedstock. While traditional applications continue to drive volume, the industry is increasingly focused on energy-efficient production, supply chain resilience, and environmental compliance.

📈 Key Trends Shaping the Market:

• Rising demand from the alumina refining sector, particularly in Asia and the Middle East

• Stricter environmental regulations pushing adoption of cleaner membrane cell technology over older methods

• Volatility in energy and raw material costs impacting production economics and regional competitiveness

• Growing investments in water treatment infrastructure globally, boosting demand for NaOH in pH adjustment and purification

Get Full Report Here: Solid NaOH Market – View in Detailed Research Report

The companies listed above are not only supplying a critical industrial chemical—they are innovating to make its production and application more efficient and sustainable for the future.