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4,4′-Dimethyl-diphenyl iodonium hexafluorophosphate (CAS# 60565-88-0), also known as bis(4-methylphenyl)iodonium hexafluorophosphate, di-p-tolyliodonium hexafluorophosphate, or IHT-PI 440, is a symmetric diaryliodonium salt with the molecular formula C₁₄H₁₄F₆IP and a molecular weight of 454.13 g/mol. Its molecular structure consists of a central iodine(III) cation bearing two identical p-tolyl (4-methylphenyl) groups, paired with a hexafluorophosphate (PF₆⁻) counteranion. This symmetric architecture, combined with the non-nucleophilic PF₆⁻ anion, confers exceptional photochemical reactivity, low odor, and benzene-free curing characteristics, making it a cornerstone of modern cationic UV curing technology.

The compound is typically supplied as a white to light yellow crystalline powder with a melting point of 175–180°C and a UV absorption peak at approximately 267 nm (with initiation occurring in the 220–250 nm range and maximum absorption at 240 nm in formulated solutions). It is stable under ambient conditions and soluble in most cationic polymerizable monomers, propylene carbonate, and polar organic solvents. Under GHS, it is classified with the signal word “Danger” (Skin Corr. 1B) and requires appropriate safety precautions during handling. It is typically supplied at ≥97.5% to ≥98% purity (TLC) with 99% grades available.

4,4′-Dimethyl-diphenyl iodonium hexafluorophosphate is a high-performance cationic photoinitiator whose value derives from its unique dual homolytic/heterolytic photolysis mechanism. Upon UV irradiation, the compound undergoes heterolytic cleavage to generate a superacid (HPF₆), which catalyzes cationic polymerization of epoxy and oxetane monomers, while simultaneously undergoing homolytic cleavage to produce active radicals that can initiate free-radical polymerization. This dual curing capability enables the formulation of hybrid systems that combine the low shrinkage of cationic polymerization with the rapid cure speed of radical polymerization, significantly improving both curing efficiency and the mechanical properties of the final material. Unlike many conventional photoinitiators, this compound is benzene-free and low-odor, making it particularly suitable for applications requiring minimal volatile organic compound (VOC) emissions and improved workplace safety. Based on its chemical characteristics and industrial significance, this article systematically analyzes the key properties, core application areas, global market structure, regulatory landscape, and future outlook of this strategically important cationic photoinitiator.

Key Properties and Reactivity Profile

4,4′-Dimethyl-diphenyl iodonium hexafluorophosphate (CAS# 60565-88-0) is a symmetric diaryliodonium salt photoinitiator whose value derives from its dual photolysis mechanism, low odor, and benzene-free curing characteristics.

Key physicochemical parameters include:

Molecular Formula: C₁₄H₁₄F₆IP
Molecular Weight: 454.13 g/mol
CAS Number: 60565-88-0
EINECS Number: 262-301-5
MDL Number: MFCD06656584
Synonyms: Bis(4-methylphenyl)iodonium hexafluorophosphate; Di-p-tolyliodonium hexafluorophosphate; IHT-PI 440; Bis(p-tolyl)iodonium hexafluorophosphate; 4,4′-Dimethyldiphenyliodonium hexafluorophosphate
Appearance: White to light yellow crystalline powder
Purity: ≥97.5% (TLC); ≥98% (TLC); ≥99% available
Melting Point: 175–180°C
UV Absorption Peak: 267 nm (solid state); maximum absorption at 240 nm in formulated solutions
Initiation Wavelength Range: 220–250 nm
Solubility: Soluble in cationic polymerizable monomers, propylene carbonate, polar organic solvents
Storage: Room temperature, cool and dark place, sealed container, argon atmosphere recommended
GHS Classification: Danger; Skin Corr. 1B (H314 – Causes severe skin burns and eye damage)
WGK Germany: 3 (high hazard to water)
Storage Class: 8A – Combustible corrosive hazardous materials
Transport Classification: Not classified as hazardous material for DOT/IATA transport under standard conditions

The compound’s reactivity is defined by its dual photolysis mechanism. Upon UV irradiation, the diaryliodonium cation undergoes heterolytic cleavage to generate a superacid (HPF₆), which initiates cationic polymerization of epoxy and oxetane monomers. Simultaneously, homolytic cleavage produces aryl radicals that can initiate free-radical polymerization of acrylate monomers. This dual mechanism enables hybrid curing systems that leverage the complementary advantages of both polymerization modes: the rapid cure speed of radical systems and the low shrinkage, deep through-cure, and dark-cure capability of cationic systems. The PF₆⁻ counteranion is critical—it is non-nucleophilic, ensuring that the generated acid remains active and does not undergo premature termination by counterion attack. The compound’s benzene-free nature is a significant advantage over conventional photoinitiators, as it eliminates the emission of carcinogenic benzene during curing and reduces odor, making it suitable for applications with stringent health and safety requirements.

Core Application Fields and Demand

Market demand for 4,4′-dimethyl-diphenyl iodonium hexafluorophosphate (CAS# 60565-88-0) is concentrated in four primary sectors: UV-curable inks and coatings (approximately 40–45% of global consumption), adhesives and sealants (approximately 20–25%), electronic materials and photoresists (approximately 20–25%), and specialty materials and 3D printing (approximately 10–15%). Its dual radical/cationic curing mechanism, low odor, and benzene-free characteristics serve as the core drivers of sustained demand growth.

In UV-curable inks and coatings, this iodonium salt is a versatile photoinitiator for cationic polymerization of epoxy- and oxetane-based photocurable systems. It is particularly effective in flexographic inks, screen printing inks, overprint varnishes, and metal and plastic coatings. The compound’s low odor and benzene-free nature make it especially suitable for food packaging inks and coatings, where residual odor and volatile organic compound (VOC) emissions are strictly regulated. In UV silk-screen inks and UV flexographic inks, the photoinitiator enables rapid curing with minimal oxygen inhibition, a common problem in radical systems. Its compatibility with propylene carbonate as a reactive thinner ensures low film shrinkage and excellent adhesion to difficult substrates. Typical addition levels range from 1.0% to 5.0%, depending on the system and desired curing speed.

In adhesives and sealants, the compound’s dual curing mechanism supports the development of hybrid free-radical/cationic systems for UV lamination adhesives and radiation-curable adhesives. This synergy is particularly valuable in pressure-sensitive adhesives (PSAs) for electronics and automotive applications, where low shrinkage and excellent adhesion to plastics and metals are paramount. The compound is also used in structural adhesives and laminating adhesives for flexible packaging, where its benzene-free nature eliminates the risk of odor transfer to packaged goods.

In electronic materials and photoresists, the compound functions as a photoacid generator (PAG) for UV-curable electronic materials. Its absorption maximum at 240 nm in solution makes it suitable for deep-UV applications, and it is used in solder masks, photoimageable dielectric materials, and photoresists for printed circuit boards and semiconductor packaging. The compound’s ability to initiate cationic polymerization without generating benzene makes it valuable for electronic encapsulation and potting compounds, where residual volatiles can affect device reliability.

In specialty materials and 3D printing, the compound is used in cationic 3D printing resins and rapid prototyping systems. Its low shrinkage and deep through-cure capability are particularly valuable in stereolithography (SLA) and digital light processing (DLP) applications, where dimensional accuracy and layer-to-layer adhesion are critical. The compound is also employed in photocurable coatings for optical fibers, display panels, and optoelectronic devices.

Major Market Participants

The global supply system for 4,4′-dimethyl-diphenyl iodonium hexafluorophosphate (CAS# 60565-88-0) features a pattern of “specialized photoinitiator manufacturers, multinational distribution networks, and Chinese producers serving distinct market segments.” The global market for diaryliodonium salt photoinitiators is part of the broader photoinitiator market, driven by the growing adoption of UV-LED curing technologies and the increasing demand for solvent-free, energy-efficient curing processes.

In the global high-purity and branded segment, key international suppliers include IGM Resins, offering the compound as Omnicat 440 (a low-odor, benzene-free cationic photoinitiator for UV radiation curing systems) with availability in Europe, South America, and China. P.A.T. Products / Deuteron offers the compound as Deuteron UV 2257, a solution formulated with bis-(4-methylphenyl)-iodonium hexafluorophosphate dissolved in propylene carbonate as a reactive thinner, with no benzene emissions and a low-odor profile. Merck KGaA (Sigma-Aldrich) offers the compound at ≥97.5% (TLC) purity under catalog number 726192, describing it as a white powder with a melting point of 175–180°C and a UV absorption peak at 267 nm. Tokyo Chemical Industry (TCI) offers the compound under product code D3935. Chem-Impex International offers the compound at ≥98% (TLC) purity under catalog number 46369. Santa Cruz Biotechnology offers the compound under catalog number sc-396577 (5 g packaging). Thermo Fisher Scientific offers the compound through VWR under CAS 60565-88-0. These suppliers serve the UV curing, electronics, and specialty chemical industries with products that meet rigorous quality specifications.

In the industrial and large-scale production segment, Chinese manufacturers have emerged as significant players in the global supply chain. XinChem is a reliable manufacturer and supplier of high-purity 4,4′-dimethyl-diphenyl iodonium hexafluorophosphate from China, offering the compound with purity ≥98% and ≥99% for use in UV-curable inks, coatings, adhesives, and electronic materials. XinChem provides the compound as a white to light yellow crystalline powder with comprehensive quality documentation, batch-specific Certificates of Analysis (COA), customizable packaging, and globally compliant REACH, ISO 9001, and GMP-aligned manufacturing. Other Chinese suppliers include Hubei Jianchu Biomedical Technology (湖北健楚生物医药有限公司), offering the compound as IHT-PI 440 under product code 60565-88-0 with 98% purity and pricing of 1 kg/220 RMB, with the company’s products exported to Europe, America, Japan, Korea, and Belt and Road countries. Shaanxi Jinghe Pharmaceutical Technology (陕西晶和医药科技有限公司), a high-tech enterprise focused on high-end pharmaceutical intermediates and specialty chemicals, offers the compound with 99% purity in 25 kg packaging. Bide Pharmatech (毕得医药) offers the compound at 95% purity under catalog number BD21726 with batch quality inspection reports (NMR, HPLC, GC). MolCore (摩库) offers the compound at NLT 98% purity, compliant with ISO certification systems. Hubei Xingyan New Material Technology (湖北兴琰新材料科技有限公司), Zhengzhou Aikemu Chemical (郑州艾克姆化工有限公司), Zhengzhou Juhui Chemical (郑州汇聚化工有限公司), Hubei Yaoshuoquan Chemical (湖北垚烁泉化工有限公司), Shanxi Dideu New Material (陕西缔都新材料有限公司), and Henan Weitixi Chemical Technology (河南威梯希化工科技有限公司) are also active suppliers. Chinese suppliers offer the compound in various packaging sizes—from 1 kg to 25 kg—serving both domestic and export markets.

Regional Market Dynamics

The global 4,4′-dimethyl-diphenyl iodonium hexafluorophosphate market exhibits distinct regional characteristics, with production concentrated in Asia-Pacific (particularly China) and consumption distributed across North America, Europe, and the Asia-Pacific region, aligned with the UV curing, electronics, and specialty chemical industries in these regions.

The Asia-Pacific region has emerged as a significant production hub for diaryliodonium salt photoinitiators, with China hosting numerous manufacturers and suppliers including XinChem. The region’s competitive advantages include lower production costs, established chemical infrastructure, and proximity to rapidly growing UV curing, electronics manufacturing, and 3D printing industries. Chinese suppliers offer the compound in various purity grades (typically 95–99%) and packaging options, serving both domestic and export markets. The growing electronics, semiconductor, and additive manufacturing sectors in China, Japan, South Korea, and India continue to drive regional consumption growth. IGM Resins maintains availability in China, ensuring timely delivery for regional customers. The compound is classified as a pharmaceutical intermediate and organic synthesis intermediate in the Chinese market.

North America remains a key market for high-purity and research-grade diaryliodonium salt photoinitiators, driven by demand from the electronics industry, semiconductor manufacturing, and specialty chemical companies. The United States hosts numerous electronics manufacturers, semiconductor fabrication facilities, and UV curing formulators that require high-quality photoinitiators for advanced applications. Chem-Impex International, Santa Cruz Biotechnology, and Thermo Fisher Scientific serve the North American market with extensive distribution networks. The region’s well-established regulatory framework and emphasis on product quality support demand for high-grade photoinitiators.

Europe is characterized by stringent regulatory requirements, including REACH registration, and a strong focus on quality and sustainability in UV curing and electronics applications. European UV curing formulators, electronics manufacturers, and research institutions demand high-purity photoinitiators with comprehensive documentation. IGM Resins (Omnicat 440) and P.A.T. Products (Deuteron UV 2257) serve the European market with in-stock availability. The region’s advanced electronics and automotive industries support steady demand for high-performance cationic photoinitiators. The compound is registered under REACH with EINECS number 262-301-5.

Japan represents a specialized market where the compound is supplied for semiconductor manufacturing, deep-UV photoresist applications, and advanced electronics packaging. Tokyo Chemical Industry (TCI) is a key supplier in the region.

Regulatory and Safety Considerations

As a diaryliodonium salt photoinitiator with applications in UV curing, electronics, and specialty materials, 4,4′-dimethyl-diphenyl iodonium hexafluorophosphate (CAS# 60565-88-0) is subject to regulatory oversight in major global economies. Compliance with relevant regulations is essential for market access and trade.

GHS classification and handling: The compound is classified with the signal word “Danger”. Hazard statements include H314 (Causes severe skin burns and eye damage). Precautionary statements include P260 (Do not breathe dust/fume/gas/mist/vapours/spray), P264 (Wash skin thoroughly after handling), P280 (Wear protective gloves/protective clothing/eye protection/face protection), P301+P330+P331 (IF SWALLOWED: Rinse mouth; do NOT induce vomiting), P303+P361+P353 (IF ON SKIN: Take off immediately all contaminated clothing; rinse skin with water/shower), P304+P340 (IF INHALED: Remove person to fresh air and keep comfortable for breathing), P305+P351+P338 (IF IN EYES: Rinse cautiously with water for several minutes; remove contact lenses if present and easy to do; continue rinsing), P310 (Immediately call a POISON CENTER/doctor), P321 (Specific treatment), P363 (Wash contaminated clothing before reuse), P405 (Store locked up), and P501 (Dispose of contents/container to an approved waste disposal plant). The WGK Germany classification is 3 (high hazard to water). The compound is classified as a combustible corrosive hazardous material (storage class 8A). Personal protective equipment including chemical-resistant gloves, protective clothing, eye protection, and face protection should be worn during handling, and operations should be conducted in a well-ventilated environment or fume hood.

Storage and stability: The compound should be stored at room temperature in a cool, dark place in a sealed container, with argon atmosphere recommended for long-term storage. It should be protected from moisture and light. The compound is stable under recommended storage conditions but should be kept away from strong oxidizing agents.

Regulatory compliance: In the European Union, the compound must comply with REACH registration requirements for import and use. The compound has an EINECS number of 262-301-5. Manufacturers and suppliers must provide comprehensive Safety Data Sheets (SDS) and maintain appropriate documentation. In the United States, the compound is intended for industrial and research applications and is regulated under TSCA. The compound is not a controlled substance.

Transport information: The compound is not classified as hazardous material for DOT/IATA transport purposes under standard conditions. Proper packaging, labeling, and documentation are nevertheless required for international shipping. The compound is typically shipped at ambient temperature with appropriate protection from light and moisture.

Future Outlook

The market outlook for 4,4′-dimethyl-diphenyl iodonium hexafluorophosphate is positive, supported by several key growth drivers across its major application segments. While the compound remains a relatively specialized cationic photoinitiator, its low-odor, benzene-free characteristics and dual curing mechanism position it for steady growth in the coming years.

Key growth drivers include:

Expansion of UV-LED curing technology: The global shift from traditional mercury-based UV lamps to UV-LED curing systems drives demand for photoinitiators with absorption spectra compatible with LED emission wavelengths. While the compound’s primary absorption at 240–267 nm requires sensitization for longer-wavelength LED applications, its low odor and benzene-free characteristics remain highly valued in hybrid systems and applications where sensitizers are already employed.
Growth in food packaging and low-odor applications: The increasing demand for low-migration, low-odor UV-curable inks and coatings for food packaging drives consumption of benzene-free photoinitiators like 4,4′-dimethyl-diphenyl iodonium hexafluorophosphate. Its ability to cure without generating benzene or volatile organic compounds makes it particularly suitable for applications with stringent health and safety requirements.
Expansion of electronics and semiconductor manufacturing: The growing demand for advanced electronic devices, printed circuit boards, and semiconductor packaging drives consumption of the compound as a photoacid generator (PAG) in UV-curable electronic materials and photoresists. Its compatibility with cationic curing systems ensures high-performance electronic materials with excellent dielectric properties and thermal stability.
Growth in 3D printing and additive manufacturing: The rapidly expanding 3D printing market—particularly stereolithography (SLA) and digital light processing (DLP)—drives demand for cationic photoinitiators that provide low shrinkage, deep through-cure, and excellent dimensional accuracy. The compound’s dual radical/cationic curing capability is particularly valuable in hybrid resin formulations for precision 3D printing.
Increasing demand for low-shrinkage, high-performance materials: The growing emphasis on dimensional stability and mechanical performance in UV-cured materials drives demand for cationic photoinitiators that provide low cure shrinkage and excellent adhesion to various substrates. The compound’s ability to form hybrid systems combining the advantages of both radical and cationic polymerization positions it for growth in high-performance coatings and adhesives.

Challenges and considerations:

UV absorption profile: The compound’s primary absorption at 240–267 nm requires the use of photosensitizers for efficient curing under longer-wavelength UV-LED systems, which are increasingly dominant in the market.
Corrosive nature: The compound’s classification as Skin Corr. 1B (H314) requires appropriate safety measures during handling and storage, and may limit its use in some applications.
Limited scale: As a specialized cationic photoinitiator, the market for this compound is smaller than that of commodity radical photoinitiators.
Competition from alternative photoinitiators: The market faces competition from other iodonium salts (including the asymmetric 4-isobutylphenyl-4′-methylphenyliodonium hexafluorophosphate, Irgacure 250), sulfonium salts, and radical photoinitiators with different absorption profiles and curing characteristics.

To succeed in this evolving market landscape, suppliers must focus on product quality (particularly purity and batch-to-batch consistency), supply chain reliability, regulatory compliance, and responsive customer service. Companies that can offer high-purity products, flexible packaging options, and technical support for UV curing, electronics, and 3D printing applications will be well-positioned to capture growing demand.

Shanghai XinChem Co., Ltd. (XinChem)

As a world-leading supplier of organic chemicals and specialty photoinitiators, Shanghai XinChem Co., Ltd. (XinChem) is dedicated to meeting the innovative needs of the UV curing, electronics, 3D printing, and specialty chemical industries. Leveraging extensive experience and advanced manufacturing capabilities, XinChem provides high-quality 4,4′-Dimethyl-diphenyl Iodonium Hexafluorophosphate (CAS# 60565-88-0) 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 UV curing formulators, electronics manufacturers, and research institutions seeking this versatile low-odor, benzene-free cationic photoinitiator.

1. Technical Advantages

Advanced Synthesis and Purification Processes
XinChem utilizes state-of-the-art manufacturing facilities and rigorous quality control measures to ensure the purity, consistency, and performance of its 4,4′-dimethyl-diphenyl iodonium hexafluorophosphate products. The production process incorporates established synthetic routes—including the oxidative coupling of 4-methylbenzene derivatives with iodine(III) reagents followed by counterion exchange with potassium hexafluorophosphate—enabling the delivery of products with purity ≥97.5% (TLC), ≥98% (TLC), and ≥99% to meet diverse application requirements. Strict process control ensures consistent product quality, minimal impurities, and batch-to-batch reproducibility, providing customers with reliable performance in UV-curable inks, coatings, adhesives, and electronic materials.

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 (TLC/HPLC), melting point (175–180°C), and impurity profiles. XinChem offers batch-specific COA, customizable packaging, and globally compliant REACH, ISO 9001, and GMP-aligned manufacturing.

2. Product Advantages

High Purity and Consistent Quality
XinChem offers 4,4′-dimethyl-diphenyl iodonium hexafluorophosphate with purity ≥97.5% (TLC), ≥98% (TLC), and ≥99% available, ensuring optimal performance in UV-curable inks, coatings, adhesives, and electronic materials. The product’s high purity minimizes the risk of unwanted side reactions and variability, making it suitable for demanding applications in food packaging inks, low-odor coatings, and electronic photoresists. The compound is supplied as a white to light yellow crystalline powder with a melting point of 175–180°C and a UV absorption peak at 267 nm in the solid state (maximum absorption at 240 nm in formulated solutions).

Comprehensive Specifications
Key specifications include:

Molecular Formula: C₁₄H₁₄F₆IP
Molecular Weight: 454.13 g/mol
CAS Number: 60565-88-0
EINECS Number: 262-301-5
Synonyms: Bis(4-methylphenyl)iodonium hexafluorophosphate; Di-p-tolyliodonium hexafluorophosphate; IHT-PI 440
Appearance: White to light yellow crystalline powder
Purity: ≥97.5% (TLC) / ≥98% (TLC) / ≥99% available
Melting Point: 175–180°C
UV Absorption Peak: 267 nm (solid); 240 nm maximum in solution
Initiation Wavelength: 220–250 nm
Solubility: Soluble in cationic polymerizable monomers, propylene carbonate, polar organic solvents
Storage: Room temperature, cool and dark place, sealed container, argon atmosphere recommended
GHS Classification: Danger; H314 (Skin Corr. 1B)
WGK Germany: 3
Storage Class: 8A – Combustible corrosive hazardous materials

Flexible Packaging Solutions
XinChem provides a range of packaging options to accommodate diverse customer needs, from laboratory-scale quantities (1 g, 5 g, 10 g, 25 g) to industrial-scale packaging (100 g, 500 g, 1 kg, 5 kg, 25 kg) and bulk shipments. Customized packaging solutions are available upon request, ensuring safe handling, storage, and transportation with appropriate protection from light and moisture.

3. Application Fields

As a versatile low-odor, benzene-free cationic photoinitiator, 4,4′-Dimethyl-diphenyl Iodonium Hexafluorophosphate (CAS# 60565-88-0) exhibits wide application value across multiple industries:

UV-Curable Inks and Coatings:

Key photoinitiator for cationic polymerization of epoxy- and oxetane-based systems
Particularly effective in flexographic inks, screen printing inks, and overprint varnishes
Low odor and benzene-free nature suitable for food packaging inks and coatings
Enables low shrinkage and excellent adhesion to difficult substrates (metals, plastics)
Typical addition levels: 1.0–5.0%

Adhesives and Sealants:

Dual radical/cationic curing mechanism for hybrid resin formulations
UV lamination adhesives and radiation-curable adhesives
Low shrinkage and excellent adhesion for pressure-sensitive adhesives (PSAs)
Benzene-free nature eliminates risk of odor transfer to packaged goods

Electronic Materials and Photoresists:

Photoacid generator (PAG) for deep-UV applications
Solder masks, photoimageable dielectric materials, and photoresists for PCBs
Electronic encapsulation and potting compounds with excellent dielectric properties
Compatible with cationic curing systems for high-performance electronic materials

Specialty Materials and 3D Printing:

Cationic 3D printing resins for stereolithography (SLA) and DLP
Low shrinkage and deep through-cure for dimensional accuracy
Photocurable coatings for optical fibers, display panels, and optoelectronic devices

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 photoinitiator concentration and sensitizer selection for specific UV-LED systems, guidance on hybrid curing formulations, or assistance with regulatory documentation, XinChem’s technical experts are ready to help. Custom synthesis and contract manufacturing with flexible scaling from R&D to commercial quantities are available upon request.

Global Logistics and Reliable Supply
With established supply chains serving markets across Europe, North America, Asia-Pacific, and beyond, XinChem ensures timely delivery and consistent product availability. The company’s logistics team manages all aspects of international shipping, including customs clearance and documentation, with appropriate protection from light and moisture for product stability.

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 photoinitiator synthesis and supply.
Quality: Rigorous quality control, high purity (≥97.5% to ≥99%), and adherence to international standards.
Reliability: Stable supply, competitive pricing, and timely delivery.
Flexibility: Customized solutions to meet diverse customer needs, including custom synthesis and packaging.
Service: Responsive technical support and comprehensive documentation including batch-specific COA.

Website: www.xinchem.com

Email: sales1@xinchem.com

WhatsApp: +86 18049800532

Post time: Oct-04-2026

The Low-Odor, Benzene-Free Cationic Photoinitiator for UV-Curable Inks, Coatings, and Electronics: 4,4′-Dimethyl-diphenyl Iodonium Hexafluorophosphate (CAS# 60565-88-0)