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Unlocking YS-DETX: A Brilliant Star in the Field of Photoinitiators

21 Jun, 2026 8:07pm

  In today's wave of industrial development pursuing efficiency and environmental protection, photopolymerization technology has become one of the core technologies in industries like coatings and inks, owing to its significant advantages such as rapid curing, low energy consumption, and low pollution. Photoinitiators, acting as critical components in UV curing systems, directly impact the quality and application effectiveness of UV-cured products. Today, we delve into a versatile free-radical photoinitiator – YS-DETX – to explore its unique charm in the field of photopolymerization.

Summary:

  YS-DETX is an efficient hydrogen-abstracting photoinitiator known for its high photoinitiation efficiency, excellent environmental profile, and controllability. It features a longer absorption wavelength, making it suitable for LED-UV curing systems. It is widely used in UV-curable coatings, inks, adhesives, and electronic encapsulation materials, showing exceptional performance in printing inks by enhancing curing speed and the visual effects of printed materials.

 

I. Product Introduction: Integrating Multiple Advantages

  YS-DETX is a versatile free-radical photoinitiator with outstanding performance. It possesses a relatively long absorption wavelength, enabling it to absorb light energy more effectively during photopolymerization to initiate polymerization reactions. Simultaneously, its excellent solubility provides significant convenience for practical application, allowing it to blend easily with various formulations.

  In practical applications, YS-DETX is often combined with α-hydroxyketone photoinitiators (such as YS-20400) for curing pigmented systems. Compared to YS-ITX, YS-DETX exhibits lower toxicity and a broader application scope. This not only aligns with environmental requirements but also meets the demands of various application scenarios. Furthermore, used in combination with tertiary amine synergists, YS-DETX delivers superior initiation performance, further enhancing the UV-curing effect. Notably, it can also function as a photosensitizer for iodonium salt cationic photoinitiators, expanding its utility in cationic UV-curing systems.

 

II. Product Information: Precise Understanding of Chemical Identity

 

Chemical Name & Molecular Weight:

  YS-DETX's chemical name is 2,4-Diethylthioxanthone, with a molecular weight of 268.37. Accurate chemical information provides the foundation for in-depth research and application of this product.

 

CAS Number:

  Its CAS number is 82799-44-8. This is the product's unique "ID number," facilitating accurate search and reference of the product in chemical databases and related literature.

 

III. Technical Parameters: Ensuring Product Quality and Stability

Appearance:

  YS-DETX appears as a yellow crystalline powder. This characteristic appearance aids in identification and handling during practical use.

Purity:

  Purity is ≥ 98.00% (determined by HPLC). High purity ensures stable and consistent product performance, providing reliable quality assurance for UV-cured products.

Melting Point Range:

  Melting point range is 69.0-76.0°C. An appropriate melting range ensures stability and processability during heating operations.

Moisture Content:

  Moisture content ≤ 0.50% (on dry basis). Low moisture content indicates minimal water content in the product, which helps improve storage stability and usage effectiveness.

 

IV. Product Advantages: Highlighting Unique Value

Long Absorption Wavelength:

 

  The long absorption wavelength allows YS-DETX to utilize light energy more efficiently, exhibiting higher efficiency during photopolymerization. This shortens curing times and enhances production efficiency.

Excellent Solubility:

  Good solubility enables it to disperse uniformly in various formulations, avoiding issues such as uneven local curing due to poor solubility. This ensures the quality of UV-cured products.

Low Toxicity:

  Compared to YS-ITX, YS-DETX has lower toxicity. This is beneficial for the health of operators and complies with environmental regulations, supporting sustainable development for businesses.

 

V. Application Fields: Wide-Ranging Application Shows Its Strength

Ink Field:

  YS-DETX is primarily used in the ink field, including PCB inks and inkjet inks. In PCB inks, it rapidly initiates polymerization, causing the ink to cure quickly, thereby improving PCB production efficiency and quality. In the inkjet sector, its excellent performance ensures high-quality printing results on various substrates.

Cationic Coatings Field:

  As an important photosensitizer for iodonium salts, YS-DETX is widely used in cationic coatings. It enhances the initiation performance of iodonium salt cationic photoinitiators, increasing the curing speed and hardness of cationic coatings, thus improving their protective and decorative performance.

Recommended Loading:

  When used as a photoinitiator, the recommended loading is approximately 1~3%. When used as a photosensitizer, the recommended loading is approximately 0.5~1%. Appropriate loading maximizes its performance advantages while avoiding negative impacts on curing caused by adding too much or too little.

 

VI. Storage & Packaging: Safeguarding Product Performance

Storage Conditions:

  YS-DETX must be kept in tightly closed containers and stored in a cool, dry, dark, and well-ventilated area. Such storage conditions prevent the product from moisture exposure, oxidation, and decomposition, ensuring stable performance. It remains effective for 1 year from the production date.

Packaging Specification:

  The product is packaged in 20 kg drums. This specification facilitates transportation and storage while meeting the needs of different users.

 

Conclusion

  YS-DETX has become a shining star in the field of photoinitiators, thanks to its unique performance advantages, wide application scope, and good storage stability. Whether in the ink or cationic coatings industries, it offers businesses efficient and environmentally friendly UV-curing solutions. We believe that with continuous technological development and expanding applications, YS-DETX will play an increasingly important role in more fields, making a more significant contribution to advancing the photopolymerization industry.