A High-Performance Flame Retardant Plasticizer for Polymers, Coatings, and Wire & Cable: 2-Ethylhexyl Diphenyl Phosphate (EHDPP) (CAS# 1241-94-7)

2-Ethylhexyl diphenyl phosphate (CAS# 1241-94-7), also known as EHDPP, DPOP, Octicizer, Santicizer® 141, Disflamoll DPO®, or Phosflex 362®, is an organophosphate ester compound with the molecular formula C₂₀H₂₇O₄P and a molecular weight of 362.41 g/mol. Its molecular structure consists of a central phosphate group bonded to two phenyl groups (aromatic rings) and one 2-ethylhexyl group (aliphatic chain), imparting a unique balance of properties, including a wide liquid range, good thermal stability, and excellent compatibility with a variety of polymers. As a colorless to pale yellow, clear, low-viscosity liquid with a slight sweet odor, EHDPP is a non-halogen, high-efficiency additive that uniquely functions as both a flame retardant and a plasticizer—a dual-purpose capability known as a flame retardant plasticizer. With the global phase-out of polybrominated diphenyl ethers (PBDEs), organophosphate flame retardants (OPFRs) like EHDPP have emerged as ubiquitous replacements, driving sustained market growth. This article systematically analyzes the key properties, core application areas, global market structure, regional dynamics, regulatory landscape, and future outlook of EHDPP, providing strategic reference for industry participants.

Core Application Fields and Demand

The market demand for 2-ethylhexyl diphenyl phosphate (CAS# 1241-94-7) is highly concentrated in the polymer, coatings, and industrial fluids sectors, with its dual functionality as a flame retardant and plasticizer serving as the primary driver of consumption growth.

In the PVC (Polyvinyl Chloride) industry, EHDPP is widely used as a primary or secondary plasticizer in flexible PVC applications, including wire and cable insulation, flooring, coated fabrics, conveyor belts, hoses, and structural foams. It provides excellent gelation, fast fusion, and flame retardancy without compromising flexibility. The compound’s low volatility (flash point: 224°C) and good weathering resistance make it an ideal choice for applications where fire risk reduction is a priority. Its fast-fusing behavior and outstanding compatibility with PVC make it particularly valuable in high-speed processing operations.

In thermoplastic polyurethanes (TPU) and rubber compounds, EHDPP functions as a flame retardant additive for automotive interior parts, electronic device housings, and industrial components requiring fire resistance and durability. In nitrile butadiene rubber (NBR) and other synthetic rubber formulations, it improves flame retardancy and processing flexibility for gaskets, seals, and industrial hoses. EHDPP is also employed in cellulose acetate for eyewear frames, tool handles, and consumer goods, as well as in acrylics, epoxy, polyester, and phenolic resins.

In coatings and adhesives, EHDPP enhances fire resistance and serves as a plasticizer in various coating systems, including industrial finishes, textile coatings, and flame-retarded systems. It is used in belts and hoses, coated fabrics and textiles, flooring, structural foams, and wire and cable applications.

In industrial fluids, EHDPP is a common additive to lubricating oils and greases, providing improved lubricity and corrosion protection. It is also used in hydraulic fluids and as a rubber processing aid.

In research and biochemical applications, EHDPP has been identified as a PPARG agonist with an effective concentration (EC20) of 2.04 µM and demonstrates inhibitory activity on ERRγ transcriptional activity with an IC50 of 1.3 µM. It is known to upregulate 3β-HSD1, enhance human chorionic gonadotropin (hCG) production, and stimulate progesterone secretion, serving as a valuable tool for investigating mechanisms of female reproduction and fetal development in biochemical research.

Major Market Participants

The global supply system for 2-ethylhexyl diphenyl phosphate (CAS# 1241-94-7) features a pattern of “multinational chemical corporations and specialized manufacturers dominating high-performance segments, with Chinese producers leading large-scale industrial supply”.

In the global high-performance and specialty segments, key players include LANXESS (holding approximately 25% market share), ICL-IP (approximately 20%), BASF, Dow Chemical, and Clariant. LANXESS Corporation produces EHDPP as a phosphorus-based industrial flame retardant designed for incorporation into various materials requiring enhanced fire resistance. Valtris Specialty Chemicals offers Santicizer® 141 and Santicizer® 141 Plus as fast-fusing, non-halogen, fire retardant plasticizers used in multiple polymer systems. Other notable international suppliers include Ehrenstorfer GmbH and TCI Chemicals.

In the industrial and large-scale production segment, Chinese manufacturers have emerged as the dominant force. China serves as the world’s largest production hub for EHDPP, with extensive manufacturing capacities and integrated supply chains. Numerous Chinese chemical companies operate production facilities, leveraging cost advantages and established supply chains to serve both domestic and international markets.

European and Japanese manufacturers focus on high-purity and specialty grades for research and high-end industrial applications, while Chinese producers serve the broader industrial market with competitive pricing and large-scale capacity.

Regional Market Dynamics

The global EHDPP market exhibits distinct regional characteristics, with production concentrated in Asia-Pacific and consumption distributed across North America, Europe, and emerging markets. The global DPHP (diphenyl (2-ethylhexyl) phosphate) market was valued at approximately $320 million in 2022 and is projected to reach $450 million by 2030, growing at a compound annual growth rate (CAGR) of 5.2% from 2025 to 2030.

The Asia-Pacific region is the dominant force in the global EHDPP market, accounting for approximately 45% of the global market share, with the region expected to grow at a CAGR of 6.0% due to rapid industrialization and urbanization in countries such as China and India. China, in particular, serves as the world’s manufacturing hub, with extensive production capacities and integrated supply chains. The rapid growth of the construction, automotive, and electronics industries in the region continues to drive demand for flame retardant plasticizers.

North America accounts for approximately 25% of the global market share. The region is characterized by stringent fire safety regulations and high demand for performance-grade EHDPP in wire and cable, automotive, and construction applications. The U.S. market is served by both domestic producers and imports, with a strong emphasis on regulatory compliance and product quality.

Europe accounts for approximately 20% of the global market share. The region is characterized by stringent regulatory requirements, including REACH registration (EHDPP is registered for use in the European Economic Area at 1,000–10,000 tonnes annually), and a strong focus on sustainability and non-halogen flame retardant solutions.

Latin America and the Middle East & Africa represent growing markets, with demand driven by infrastructure development, construction activity, and expanding industrial bases.

Regulatory and Environmental Considerations

As an industrial chemical widely used in polymer, coating, and fluid applications, 2-ethylhexyl diphenyl phosphate (CAS# 1241-94-7) is subject to regulatory oversight in major global economies. Compliance with relevant regulations is essential for market access and trade.

In the European Union, EHDPP is registered under REACH (Registration, Evaluation, Authorisation and Restriction of Chemicals) for use in the European Economic Area at 1,000–10,000 tonnes annually. The compound has an EC number of 214-987-2 and an EINECS listing. Manufacturers and suppliers must provide comprehensive safety data sheets (SDS) and comply with REACH documentation requirements.

In the United States, EHDPP is regulated under the Toxic Substances Control Act (TSCA) and is listed on the TSCA Inventory. The compound is subject to EPA oversight, and certain uses may be subject to Significant New Use Rules (SNURs). The compound has been evaluated for environmental hazards, with EPA noting that 2-ethylhexyl diphenyl phosphate presents a high aquatic hazard. The compound also carries an RTECS number of TC6125000.

GHS classification and handling: EHDPP is classified as a clear, odorless liquid with low acute toxicity. Under normal handling conditions, irritation risks are minimal. The compound is not classified as a skin sensitizer or mutagen. However, exposure to decomposition products in fire scenarios can result in symptoms such as carbon monoxide poisoning or phosphorus oxide effects. The substance is not a mutagen or carcinogen.

For international transport, EHDPP is classified under UN 3082 (Environmentally Hazardous Substances, Liquid, N.O.S., Class 9, Packing Group III). Proper packaging, labeling, and documentation are required for shipping in compliance with the International Maritime Dangerous Goods Code (IMDG Code) and other transport regulations.

Environmental considerations: EHDPP has been detected in household dust, food, food packaging such as meat wrapping, and wastewater sludge. The compound presents a high aquatic hazard. As a result, manufacturers are increasingly focused on developing more sustainable production methods and improving waste management practices. The global trend toward halogen-free flame retardants continues to drive demand for EHDPP as a safer alternative to brominated flame retardants.

Future Outlook

The market outlook for 2-ethylhexyl diphenyl phosphate is positive, supported by several key growth drivers across its major application segments. The global market is expected to maintain steady growth, with a projected CAGR of 5.2% from 2025 to 2030.

Key growth drivers include:

1. Increasing demand for flame retardants in construction: The global construction industry is expected to grow at a CAGR of 4.5% from 2025 to 2030, significantly boosting demand for EHDPP. Stringent fire safety regulations in regions such as North America and Europe further drive market growth.
2. Growth in the wire and cable industry: The wire and cables segment is expected to witness the highest growth rate of 6.5% due to increasing demand for flame-retardant materials in the electronics industry.
3. Demand for lightweight materials in automotive: EHDPP is widely used as a plasticizer in automotive foams, helping reduce overall vehicle weight and improve fuel efficiency. The automotive industry is projected to grow at a CAGR of 3.8%.
4. Phase-out of brominated flame retardants: The global phase-out of PBDEs and other brominated flame retardants continues to drive demand for organophosphate alternatives like EHDPP.
5. Expansion of electronics manufacturing: The rapid growth of the electronics industry, particularly in Asia-Pacific, drives demand for flame-retardant materials in device housings, cables, and components.

Challenges and considerations:

• Regulatory scrutiny: Increasing environmental and health regulations may require ongoing investment in compliance and product stewardship.
• Raw material price volatility: Fluctuations in the prices of phosphorus oxychloride, phenol, and 2-ethylhexanol may impact production costs.
• Competition from alternatives: The market faces competition from other organophosphate flame retardants and alternative plasticizers.
• Environmental concerns: The compound’s aquatic toxicity and environmental persistence may lead to increased regulatory restrictions.

To succeed in this evolving market landscape, suppliers must focus on product quality, supply chain reliability, regulatory compliance, and the development of sustainable production methods. Companies that can offer high-purity products, flexible packaging options, and responsive technical support will be well-positioned to capture growing demand.

Shanghai XinChem Co., Ltd. (XinChem)

As a world-leading supplier of organic chemicals, Shanghai XinChem Co., Ltd. (XinChem) is dedicated to meeting the innovative needs of the polymer, coatings, electronics, and specialty chemical industries. Leveraging extensive experience and advanced manufacturing capabilities, XinChem provides high-quality 2-Ethylhexyl Diphenyl Phosphate (EHDPP, CAS# 1241-94-7) to customers worldwide. As a trusted manufacturer and supplier based in China, XinChem combines competitive pricing, reliable supply, and exceptional service to establish itself as a preferred partner for businesses seeking this versatile flame retardant plasticizer.

1. Technical Advantages

Advanced Manufacturing and Purification Processes
XinChem utilizes state-of-the-art manufacturing facilities and rigorous quality control measures to ensure the purity, consistency, and safety of its EHDPP products. The production process incorporates advanced esterification and purification technologies, enabling the delivery of industrial-grade products with purity ≥99.0% (GC) and pharmaceutical-grade products with purity ≥99.5% (HPLC). Strict process control minimizes impurities and ensures batch-to-batch consistency, providing customers with reliable performance in their formulations.

Full-Chain Quality Control
The production process strictly adheres to international quality standards, with comprehensive quality control covering raw material sourcing, in-process monitoring, and finished product testing. Each batch is accompanied by a detailed Certificate of Analysis (COA) documenting physical and chemical properties, purity data, and impurity profiles. This commitment to quality ensures that XinChem’s EHDPP meets the stringent requirements of industrial, automotive, and electronics applications.

2. Product Advantages

High Purity and Consistent Quality
XinChem offers 2-ethylhexyl diphenyl phosphate in multiple purity grades, including ≥99.0% (industrial grade) and ≥99.5% (pharmaceutical/high-purity grade), ensuring optimal performance in polymer formulation, coating applications, and research use. The product’s high purity minimizes the risk of unwanted side reactions, color issues, and performance variability.

Comprehensive Specifications
The product is characterized by a colorless to pale yellow clear liquid appearance, a density of 1.080–1.090 g/cm³ at 25°C, a boiling point of 375°C at 760 mmHg, a flash point of 224°C (closed cup), and a viscosity of 16–25 cP at 25°C. Key parameters—including acidity (≤0.2 mg KOH/g), moisture (≤0.1% by KF), color (APHA ≤30), phosphorus content (approximately 8.5%), and refractive index (1.5080–1.5110 at nD20)—are carefully controlled to ensure reliable and reproducible results in customer processes.

Flexible Packaging Solutions
XinChem provides a range of packaging options to accommodate diverse customer needs, from laboratory-scale quantities to industrial-scale drums and bulk shipments. Customized packaging solutions are available upon request, ensuring safe handling, storage, and transportation. Recommended storage temperature is 2–8°C in a tightly closed, dry, and well-ventilated place.

3. Application Fields

As a versatile non-halogen flame retardant plasticizer, 2-Ethylhexyl Diphenyl Phosphate (CAS# 1241-94-7) exhibits wide application value across multiple industries:

PVC (Polyvinyl Chloride):

• Primary or secondary plasticizer in flexible PVC for wire and cable insulation, flooring, coated fabrics, conveyor belts, hoses, and structural foams
• Provides excellent gelation, fast fusion, and flame retardancy without compromising flexibility

TPU (Thermoplastic Polyurethane):

• Flame retardant additive in TPU for automotive interior parts, electronic device housings, and industrial components

Rubber Compounds (NBR, SBR, etc.):

• Improves flame retardancy and processing flexibility in nitrile butadiene rubber and other synthetic rubber formulations for gaskets, seals, and industrial hoses

Cellulose Acetate & Other Resins:

• Plasticizer and flame retardant in cellulose acetate for eyewear frames, tool handles, and consumer goods
• Compatible with acrylics, epoxy, polyester, and phenolic resins

Coatings & Adhesives:

• Enhances fire resistance and serves as a plasticizer in industrial coatings, textile coatings, and flame-retarded systems

Industrial Fluids:

• Additive to lubricating oils and greases, providing improved lubricity and corrosion protection
• Used in hydraulic fluids and as a rubber processing aid

4. Service Support

Technical Expertise and Customized Solutions
XinChem’s team of experienced chemists and application engineers provides full technical support throughout the customer journey—from product selection and specification development to application guidance and troubleshooting. Whether customers require optimization of formulation parameters, guidance on handling and storage, or assistance with regulatory documentation, XinChem’s technical experts are ready to help.

Global Logistics and Reliable Supply
With established supply chains serving markets across Europe, North America, Asia-Pacific, Latin America, and beyond, XinChem ensures timely delivery and consistent product availability. The company’s logistics team manages all aspects of international shipping, including compliance with dangerous goods transport regulations (UN 3082, Class 9), customs clearance, and documentation.

Regulatory Support
XinChem provides comprehensive documentation to support regulatory compliance, including Safety Data Sheets (SDS), Certificates of Analysis (COA), and other required certificates. The company stays current with evolving regulatory requirements in major markets, including REACH, TSCA, and other regional regulations, helping customers navigate the complexities of global trade.

5. Reasons to Choose XinChem

• Professionalism: Extensive experience and deep expertise in the chemical industry.
• Quality: Rigorous quality control and adherence to international standards.
• Reliability: Stable supply, competitive pricing, and timely delivery.
• Flexibility: Customized solutions to meet diverse customer needs.
• Service: Responsive technical support and comprehensive documentation.

Contact us today to start your partnership with XinChem!

Website: www.xinchem.com

Email: sales1@xinchem.com

WhatsApp: +86 18049800532