Photoinitiator 819 CAS 162881-26-7
High Quality Photoinitiator 819 CAS 162881-26-7
- Appearance:Powder
- Purity:99.8%
- Delivery:30days
- Sample Available:Available
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Name: Photoinitiator 819
CAS: 162881-26-7
MOQ: 1KG
Directory Guidance on Photoinitiator 819
Product Introduction:
Photoinitiator 819, chemically named Phenylbis( 2,4,6-trimethylbenzoyl) phosphine oxide, is an acylphosphine oxide photoinitiator. It is commonly made use of in layers, inks, adhesives and other markets for its superb performance.
Photoinitiator 819 has higher absorption in the ultraviolet and visible light areas, and can initiate curing more effectively than other photoinitiators for coating systems containing pigments. This photoinitiator hardly turns yellow after treating adn under lasting light radiation, so it appropriates for celebrations with stringent requirements on yellowing, such as white and light-colored inks and coverings.
Photoinitiator 819 remains in the kind of yellow powder with a thickness of regarding 1.17 g/cm ³, a melting point in between 131-135ºC, a predicted boiling point of 590.0 ± 60.0 ° C, a flash point of 310.6 ºC, and a refractive index of 1.588. It is soluble in solvents such as acetone, acetonitrile, toluene adn hexanediol diacrylate.
The advantage of photoinitiator 819 is its efficient initiation activity, with wavelength absorption peaks at 370nm and 405nm, and the maximum absorption wavelength can get to 450nm. The photolysis items are two trimethylbenzoyl groups and one phenylphosphonyl radical, which ahev high initiation activity, making photoinitiator 819 more energetic than TPO.
In addition, photoinitiator 819 likewise has excellent light transmittance and outstanding absorption residential properties, which appropriates for treating thick layers, and can additionally be made use of for outdoor varnishes when utilized in mix with light stabilizers.
Photoinitiator 819 can be utilized in combination withh other photoinitiators, such as 184 or 651. The combination of 819 and 651 is especially suitable for curing polyester/styrene material systems, such as glass fiber reinforced products.
Basic Info:
Chemical Structure
| Melting point | 131-135 °C(lit.) |
| Boiling point | 590.0±60.0 °C(Predicted) |
| density | 1.17±0.1 g/cm3(Predicted) |
| vapor pressure | 0Pa at 20℃ |
| storage temp. | Sealed in dry,Room Temperature |
Nature and Specifications:
| Item | Specification |
| Product Name | Photoinitiator 819 |
| CAS No. | 162881-26-7 |
| Appearance | Powder |
| Shelf Life | 2 years |
| Packing | As your requirements |
| solubility | acetone, acetonitrile, toluene, and hexanedioldiacrylate: soluble |
| form | powder |
| color | Pale Yellow to Yellow |
| Water Solubility | 100μg/L at 20-21℃ |
What Are The Uses of Photoinitiator 819
Product service:
Photoinitiator 819 is widely used in applications where quick curing and premium finishes are crucial. A few of the most significant applications consist of:
1.UV-Cured Coatings
Photoinitiator 819 is extensively utilized inUV-curable finishes for a selection of substrates, consisting of wood, steel, plastics, and glass. UV-curable layers are significantly prominent because of their ecological advantages (low or no solvent material), fast healing rates, and superb hardness and sturdiness. In this context, Photoinitiator 819 acts as an essential element, initiating the curing procedure when revealed to UV light. These coatings are used in auto finishes, furnishings layers, floor covering, and electronic tool layers.
2.UV-Cured Inks
One more vital application of Photoinitiator 819 remains in the formulation ofUV-curable inks. These inks are made use of inflexographic printing, display printing, andoffset printing applications, where high-speed treating is required. Photoinitiator 819’s high efficiency in launching polymerization makes it excelent for developing inks that completely dry rapidly under UV light while preserving exellent shade quality and attachment to numerous substratums. UV inks are extensively used in the packaging, labels, and printing markets.
3. Adhesives and Sealers
Photoinitiator 819 is also located in the solution ofUV-curing adhesives andsealants. These materials are utilized in applications ranging fromautomotive assembly toelectronics manufacturing, where exact bonding and fast healing are required. Photoinitiator 819 makes it possible for tjhe fast bonding of substrates, decreasing processing times and raising production efficiency.
4.3 D Printing
In the expanding area of3D printing, Photoinitiator 819 is increasingly utilized instereolithography (SHANTY TOWN) anddigital light handling (DLP) modern technologies. In these 3D printing processes, photoinitiators are utilized to heal material layer by layer, allowing for the creation of complex 3D structures. The high sensitivity of Photoinitiator 819 ensures that the healing procedure happens rapidly, supplying high-resolution prints with outstanding surface area coatings.
Benefits of Photoinitiator 819
Photoinitiator 819 provides a number of substantial advantages that make it a favored option for a variety of UV-curing applications:
1. High Effectiveness and Rapid Healing
Among the main advantages of Photoinitiator 819 is itshigh photoinitiating effectiveness. It can take in a wide spectrum of UV light and launch polymerization sucessfuly, causing faster curing times. This effectiveness reduces the need for extended UV direct exposure, making the healing procedure quicker anbd a lot more energy-efficient.
2. Reduced Movement and High Purity
Photoinitiator 819 haslow migration residential or commercial properties, which means it does not easily migrate or seep out of the cured movie after polymerization. This residential property is essential in applications such as food packaging or medical tools, where material safety and security adn purity are critical. It also makes sure that the final product keeps its preferred residential or commercial properties in time.
3. Compatibility with Various Material Systems
Photoinitiator 819 is compatible with a variety of resin systems, includingacrylate-based, epoxy-based, andvinyl-based systems. Its flexibility makes it an important photoinitiator in various kinds of UV-curing formulas, making it possible for makers to tailor items for details applications.
4. Ecological Benefits
Like various other UV-curable materials, making use of Photoinitiator 819 helps in reducing the ecological influence of producing procedures. UV-curable systems are commonly solvent-free or reduced in solvent web content, which minimizes unsafe discharges and contributes to a cleaner, extra lasting production process.
Photoinitiator 819 is an extremely efficient and versatile substance used in UV-curing systems, playing a critical role in the fast polymerization of resin products upon exposure to UV light. Its performance, broad absorption spectrum, and compatibility with numerous resin systems make it a prominent choice in industries ranging from coatings and inks to adhesives, 3D printing, and clinical applications. The capability of Photoinitiator 819 to deliver quick, energy-efficient treating while maintaining superb item top quality and environmental advantages has actually solidified its setting as a principal worldwide of UV curing.
Safety Precautions of Photoinitiator 819
When usingPhotoinitiator 819 (also known asBenzoin isobutyl ether), certain precautions should be taken to ensure safety, effectiveness, and longevity of the product. Like many chemicals, photoinitiator 819 is effective but can pose risks if not handled properly. Below are some key precautions to consider when using this compound:
1.Handling and Storage
Store in a Cool, Dry Place: Photoinitiator 819 should be stored in acool, dry, and wellventilated area, away from direct sunlight or sources of heat. UV light exposure can prematurely activate the photoinitiator, reducing its effectiveness before it is used in formulations. It is also essential to avoid exposure to high temperatures, which could cause decomposition or degradation of the compound.
Proper Containers: Always store Photoinitiator 819 in tightly sealed,opaque containers to protect it from UV radiation. Glass or highquality plastic containers are preferable, and they should be labeled clearly to avoid confusion with other chemicals.
Avoid Moisture: Photoinitiator 819 should be kept away from moisture and humidity, as exposure to water can affect its stability and reactivity. Humid conditions can also cause hydrolysis or other chemical reactions that degrade the material.
2.Avoid Exposure to UV Light
Minimize UV Exposure: As a photoinitiator, Photoinitiator 819 is sensitive to UV light. It is crucial to avoid unnecessary exposure to UV light before it is incorporated into resin systems or other formulations.UV light can trigger premature photolysis of the compound, which will reduce its photoinitiating efficiency and may lead to the formation of byproducts that affect the performance of the final product.
Use in LowLight Conditions: Whenever possible, handle and mix Photoinitiator 819 inlowlight conditions or underyellow or amber lighting to prevent accidental activation. This is particularly important in formulation processes where the compound needs to remain stable until its intended use.
3.Compatibility with Other Chemicals
Check Compatibility with Resin Systems: Photoinitiator 819 is compatible with a wide range of resin systems, but it is still important to check for potential incompatibilities with other ingredients in the formulation. Some monomers, oligomers, or additives may interfere with the photoinitiation process, either by absorbing UV light or by reacting with Photoinitiator 819.
Avoid Incompatibility with Strong Reducing Agents: Photoinitiator 819 should not be mixed with strong reducing agents, as they could destabilize the compound and reduce its photoinitiating efficiency. Ensure that any other chemicals used in combination with Photoinitiator 819 are compatible and do not lead to unwanted side reactions.
4.Precautions in Formulation and Application
Correct Dosage: Overuse or underuse of Photoinitiator 819 in resin systems can lead to issues with curing. Too much of the compound may result in excessive heat generation during curing, causing material degradation or warping. On the other hand, too little photoinitiator may result in incomplete polymerization or insufficient crosslinking, leading to poor material properties. Follow recommended guidelines and test formulations to determine the optimal concentration for your specific application.
Test Formulations: When using Photoinitiator 819 in new formulations or with unfamiliar resins, it is highly recommended to conduct smallscale trials to test the effectiveness of the photoinitiator. This helps ensure that the desired curing speed and final properties are achieved without unwanted side effects.
Temperature Control During Curing: During the UV curing process, ensure that the temperature remains controlled. Overheating can lead to the degradation of the photoinitiator, reducing its efficiency and possibly resulting in the formation of unwanted side products. It’s important to follow recommended curing temperature ranges to avoid thermal degradation.
Conclusion
Photoinitiator 819 is a highly effective and widely used compound in UVcuring applications, but as with all chemicals, proper precautions should be taken to ensure its safe and effective use. By following recommended storage, handling, and safety practices—such as wearing protective gear, avoiding exposure to UV light, ensuring compatibility with resin systems, and adhering to disposal regulations—you can maximize the benefits of Photoinitiator 819 while minimizing any potential risks. Safety and careful management are essential for achieving optimal results in photopolymerization processes and maintaining a safe working environment.
- Certificate Of Analysis (COA)
- Material Safety Data Sheet (MSDS)
- Route of synthesis (ROS)
- Method of Aanlysis (MOA)
- Nuclear Magnetic Resonance (NMR)
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