Top 10 Companies in the Anhydrous Calcium Sulfate Market (2026): Market Leaders Powering Global Construction

MARKET INSIGHTS

The Global anhydrous calcium sulfate market size was valued at USD 1.35 billion in 2024. The market is projected to grow from USD 1.42 billion in 2025 to USD 2.18 billion by 2032, exhibiting a compound annual growth rate (CAGR) of 5.8% during the forecast period.

Anhydrous calcium sulfate, more commonly known as the mineral anhydrite, is a calcium salt with the chemical formula CaSO₄. It is a vital industrial material prized for its binding properties and its role as a source of calcium and sulfur. This compound is distinct from its hydrated forms, such as gypsum (CaSO₄·2H₂O), because it contains no water of crystallization, which grants it specific physical and chemical characteristics.

The market growth is primarily driven by robust demand from the construction industry, where it is used in plasters, drywall, and self-leveling floor compounds. However, it also faces competition from alternative materials and is sensitive to fluctuations in the building and construction sector. Furthermore, the material finds essential applications across diverse industries, including its use as a desiccant, in soil conditioning, and as a calcium fortifier in the food and pharmaceutical sectors. This broad utility across multiple end-use industries underpins the steady market expansion. Key global players operating in this market with extensive product portfolios include Knauf, Saint‑Gobain, National Gypsum, and LafargeHolcim, which collectively hold a significant market share.

Anhydrous Calcium Sulfate Market – View in Detailed Research Report

Top 10 Companies in the Anhydrous Calcium Sulfate Market (2026)

1. Knauf

   Headquarters: Germany

   Key Offering: Technical‑grade anhydrous calcium sulfate for plasterboard, cement, and construction binders.

   Knauf is a global leader in gypsum and plaster solutions, with a strong focus on innovation and sustainability. Its technical-grade calcium sulfate is used extensively in drywall manufacturing, contributing to energy‑efficient building envelopes.

   Sustainability Initiatives:

   • Carbon‑neutral production through renewable energy integration.
   • Recycling of gypsum waste streams to reduce landfill.
   • Investment in R&D for low‑emission processing.

2. Saint‑Gobain

   Headquarters: France

   Key Offering: Technical and high‑purity calcium sulfate for construction, food, and pharmaceutical applications.

   Saint‑Gobain’s extensive product portfolio spans building materials, glass, and high‑performance composites. Its calcium sulfate lines support both bulk construction and specialty grades.

   Sustainability Initiatives:

   • Goal of 50% renewable energy usage by 2030.
   • Lifecycle assessment to reduce CO₂ emissions.
   • Partnerships with suppliers to ensure responsible sourcing.

3. LafargeHolcim

   Headquarters: Switzerland

   Key Offering: Technical‑grade anhydrous calcium sulfate for cement and plasterboard production.

   LafargeHolcim combines its cement expertise with gypsum processing, delivering high‑quality binders that enhance concrete performance.

   Sustainability Initiatives:

   • Target of net‑zero emissions by 2050.
   • Use of alternative fuels in kilns.
   • Investment in circular economy projects.

4. National Gypsum

   Headquarters: United States

   Key Offering: Technical and food‑grade calcium sulfate for construction and food fortification.

   National Gypsum supplies a wide range of gypsum products, including high‑purity calcium sulfate used in food processing and pharmaceutical formulations.

   Sustainability Initiatives:

   • Zero‑waste manufacturing plants.
   • Water‑efficiency programs in production.
   • Community outreach on sustainable building practices.

5. American Gypsum

   Headquarters: United States

   Key Offering: Technical‑grade anhydrous calcium sulfate for drywall and interior finishes.

   American Gypsum is a leading provider of gypsum products in North America, focusing on high‑performance construction solutions.

   Sustainability Initiatives:

   • Renewable energy procurement for facilities.
   • Carbon‑offset programs for logistics.
   • Innovation in low‑embodied‑carbon gypsum.

6. Armstrong World Industries

   Headquarters: United States

   Key Offering: Technical‑grade anhydrous calcium sulfate for construction and industrial applications.

   Armstrong delivers gypsum products that enhance building performance and interior design.

   Sustainability Initiatives:

   • Energy‑efficient manufacturing lines.
   • Recycled content in packaging.
   • Stakeholder engagement on climate action.

7. Etex Group

   Headquarters: Belgium

   Key Offering: Technical‑grade anhydrous calcium sulfate for plasterboard and floor systems.

   Etex combines building materials with a strong focus on sustainability and circularity.

   Sustainability Initiatives:

   • Carbon‑neutral production by 2030.
   • Recycling of gypsum waste into new products.
   • Investment in green building certifications.

8. ACG Materials

   Headquarters: United States

   Key Offering: High‑purity anhydrous calcium sulfate for food and pharmaceutical grades.

   ACG Materials specializes in specialty additives that meet stringent regulatory standards.

   Sustainability Initiatives:

   • Zero‑emission production processes.
   • Water‑recycling systems.
   • Compliance with ISO 14001 environmental management.

9. Yoshino Gypsum Co., Ltd.

   Headquarters: Japan

   Key Offering: Technical and high‑purity anhydrous calcium sulfate for construction and food industries.

   Yoshino supplies high‑quality gypsum products across Asia, supporting both construction and food processing sectors.

   Sustainability Initiatives:

   • Energy‑efficient kiln operations.
   • Use of renewable electricity.
   • Partnerships for responsible mining.

10. BNBM Group

    Headquarters: China

    Key Offering: Technical‑grade anhydrous calcium sulfate for construction and industrial applications.

    BNBM is a leading gypsum producer in China, focusing on large‑scale production and export.

    Sustainability Initiatives:

    • Carbon‑capture and storage projects.
    • Water‑saving technologies.
    • Community development in mining regions.

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Outlook to 2034

The Global anhydrous calcium sulfate market is projected to grow at a steady CAGR of 5.8% from 2025 to 2034, reaching an estimated value of USD 2.36 billion by 2034. The growth will be driven by continued expansion in the construction sector, increasing demand for sustainable building materials, and the rising adoption of high‑purity grades in food and pharmaceutical applications.

Future Trends

• Expansion of high‑purity, food‑grade and pharma‑grade anhydrous calcium sulfate to meet stringent regulatory requirements.
• Growth of niche applications such as bone graft substitutes, advanced ceramics, and pharmaceutical carriers.
• Adoption of circular economy practices, including recycling gypsum waste and using alternative fuels.
• Digitalization of supply chains to improve traceability and reduce carbon footprints.
• Increased focus on low‑emission production technologies across the value chain.