Top 10 Companies in the Biphenyl (Diphenyl) Market (2025): Key Innovators and Industry Leaders

In Business Insights
November 24, 2025


The Global Biphenyl (Diphenyl) Market was valued at approximately US$ 190 Million in 2023 and is projected to reach a revised size of US$ 260 Million by 2030, growing at a Compound Annual Growth Rate (CAGR) of 4.9% during the forecast period (2023–2030). This growth is primarily driven by increasing demand from the chemical industry for heat transfer fluids, the expanding dye and textile sectors, and the rising use of biphenyl as an intermediate in pharmaceutical synthesis.

As industries worldwide seek efficient and reliable chemical intermediates, the role of high-purity biphenyl becomes increasingly critical. In this blog, we profile the Top 10 Companies in the Biphenyl (Diphenyl) Industry—a group of established chemical manufacturers and specialty chemical suppliers that are shaping the market’s production, innovation, and global distribution networks.


🔟 1. Eastman Chemical Company

Headquarters: Kingsport, Tennessee, USA
Key Offering: High-purity Biphenyl (≥99.5%), Pharmaceutical and Industrial Grades

Eastman is a global specialty materials company and a significant producer of biphenyl, supplying high-purity grades primarily for heat transfer fluid applications. Their products are critical in closed-loop heating systems for the chemical processing, oil & gas, and renewable energy sectors.

Key Initiatives & Strengths:

  • Focus on high-value, high-purity products for demanding applications

  • Robust global distribution and supply chain for industrial chemicals

  • Investment in sustainable production processes

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9️⃣ 2. LANXESS

Headquarters: Cologne, Germany
Key Offering: Biphenyl for chemical synthesis and specialty applications

LANXESS is a leading specialty chemicals company with a strong foothold in the production of intermediates like biphenyl. Their product serves as a key building block for agrochemicals, dyes, and advanced materials, leveraging their expertise in complex chemical manufacturing.

Key Initiatives & Strengths:

  • Strong R&D focus on developing advanced chemical intermediates

  • Strategic positioning within the European and Asian markets


8️⃣ 3. Synerzine, Inc.

Headquarters: United States
Key Offering: High-Purity Biphenyl for research and development

Synerzine specializes in providing high-purity organic compounds, including biphenyl, for research institutions, pharmaceutical developers, and specialty chemical manufacturers. Their focus on purity and consistency makes them a key supplier for lab-scale and pilot-scale applications.

Key Initiatives & Strengths:

  • Catering to the niche R&D and pharmaceutical sectors

  • Emphasis on ultra-pure grades for sensitive applications


7️⃣ 4. Biosynth Carbosynth

Headquarters: Staad, Switzerland
Key Offering: Biphenyl and related derivatives for life sciences

Following the merger of Biosynth and Carbosynth, this company has become a major global supplier of biochemicals and diagnostic reagents. They supply high-quality biphenyl to the pharmaceutical, diagnostic, and academic research markets worldwide.

Key Initiatives & Strengths:

  • Extensive catalog of life science chemicals and building blocks

  • Global logistics network serving the research community


6️⃣ 5. Radco Industries

Headquarters: Addison, Illinois, USA
Key Offering: Industrial-grade Biphenyl

Radco Industries is a supplier of industrial chemicals, including biphenyl, primarily serving North American markets. The company provides products for applications in dyes, organic synthesis, and other industrial processes.

Key Initiatives & Strengths:

  • Strong regional presence and supply chain in North America

  • Focus on serving mid-sized industrial customers

Download FREE Sample Report:
Biphenyl (Diphenyl) Market – View in Detailed Research Report


5️⃣ 6. Watson International Ltd.

Headquarters: Nanjing, China
Key Offering: Biphenyl, pharmaceutical intermediates, and fine chemicals

Watson International is a China-based company specializing in the manufacture and supply of fine chemicals, including biphenyl. They play a significant role in supplying cost-effective intermediates to global markets, particularly from the Asia-Pacific region.

Key Initiatives & Strengths:

  • Competitive manufacturing capabilities in Asia

  • Expanding portfolio of fine chemicals and custom synthesis services


4️⃣ 7. Beida Industry Co., Ltd.

Headquarters: Hebei, China
Key Offering: Biphenyl, Diphenyl Oxide, and related aromatic compounds

Beida Industry is a Chinese manufacturer specializing in aromatic chemicals. The company produces biphenyl for both domestic use and export, serving applications in heat transfer fluids, dye carriers, and as a chemical precursor.

Key Initiatives & Strengths:

  • Integrated production capabilities for aromatic compounds

  • Growing export business to international markets


3️⃣ 8. Three En Chemical Co., Ltd.

Headquarters: Shanghai, China
Key Offering: High-purity Biphenyl for industrial applications

Three En Chemical is a specialist producer of fine chemicals in China, with a product line that includes biphenyl. The company focuses on meeting the quality standards required by international customers in various industrial sectors.

Key Initiatives & Strengths:

  • Focus on quality control and meeting international specifications

  • Strategic location in a major Chinese chemical industry hub


2️⃣ 9. Dalian Richfortune Chemicals Co., Ltd.

Headquarters: Dalian, China
Key Offering: Biphenyl and other organic intermediates

Dalian Richfortune Chemicals is an exporter of chemical intermediates, including biphenyl. The company leverages its position in Northeast China to supply markets in Asia and beyond, serving customers in the chemical manufacturing and research sectors.

Key Initiatives & Strengths:

  • Export-oriented business model

  • Competitive pricing for standard-grade chemicals


1️⃣ 10. Sankuaishi Chemical Factory

Headquarters: Japan
Key Offering: Specialty Biphenyl grades

Sankuaishi Chemical Factory is a Japanese chemical company with a history of producing specialized chemical products. Their production of biphenyl caters to the high standards of the Japanese and broader Asian markets, particularly for technical and niche applications.

Key Initiatives & Strengths:

  • Reputation for high-quality manufacturing standards

  • Serving demanding applications in the regional advanced materials sector

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Biphenyl (Diphenyl) Market – View in Detailed Research Report


🌍 Outlook: The Future of Biphenyl (Diphenyl) Relies on Niche Applications and Regional Growth

The biphenyl market is characterized by steady, mature demand rather than explosive growth. However, its future trajectory is closely tied to specialty applications and the expansion of end-use industries in emerging economies.

📈 Key Trends Shaping the Market:

  • Increasing demand for high-purity biphenyl in pharmaceutical synthesis as a key intermediate.

  • Sustained use in heat transfer fluids for concentrated solar power (CSP) plants and industrial processes.

  • Growth in the dye and textile industries in Asia-Pacific, driving consumption of biphenyl as a dye carrier.

  • Focus on production efficiency and cost optimization by manufacturers to maintain competitiveness.

Get Full Report Here:
Biphenyl (Diphenyl) Market – View in Detailed Research Report

The companies listed above are the cornerstone of the global biphenyl supply chain, ensuring the steady availability of this essential chemical intermediate for a wide range of industrial and specialty applications.