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Exploring the Benefits and Uses of Irganox PS 802: A Comprehensive Guide

Irganox PS 802, a phenolic antioxidant, is a critical component utilized in various industrial applications due to its impressive thermal stability and oxidative resistance. It primarily functions to thwart the oxidative degradation of polymers during their processing and end-use. Its broad compatibility with a variety of polymers and synergistic performance when combined with phosphite antioxidants make it a preferred choice among industrial manufacturers. This comprehensive guide will delve into the various benefits and uses of Irganox PS 802 to provide a deeper understanding of its role within the industry.

What is Irganox PS 802?

What is Irganox PS 802?

Understanding the composition and properties of Irganox PS 802

Irganox PS 802 is a sterically hindered phenolic antioxidant, chemically known as 2,2′-Methylenebis(6-(1,1-dimethylethyl)-4-methylphenol). This chemical compound is characterized by its high molecular weight, which imparts superior thermal stability and oxidative resistance. The phenolic structure of Irganox PS 802 provides it with the ability to scavenge free radicals, thereby preventing the oxidative degradation of polymers. It also exhibits low volatility and excellent resistance to extraction, which are crucial for its functionality in high-temperature processing conditions and diverse end-use environments. Moreover, Irganox PS 802 is compatible with a vast array of polymers, including polyolefins, styrene polymers, and engineering plastics, further extending its practical applications in the industry.

How is Irganox PS 802 different from other antioxidants?

Several aspects distinguish Irganox PS 802 from other antioxidants.

  1. Superior Thermal Stability and Oxidative Resistance: The high molecular weight of Irganox PS 802 provides it with remarkable thermal stability, making it ideal for applications that involve high-temperature processing. Its ability to resist oxidation is also outstanding, protecting polymers from degradation even under challenging environmental conditions.
  2. Phenolic Structure: The phenolic structure of Irganox PS 802 allows it to scavenge free radicals, safeguarding polymers from oxidative degradation effectively. This attribute is not universally shared among other antioxidants.
  3. Low Volatility and Excellent Extraction Resistance: Irganox PS 802 exhibits low volatility and is highly resistant to extraction. These properties are critical in environments with high temperatures or diverse end-use conditions.
  4. Compatibility with Various Polymers: The compatibility of Irganox PS 802 with a wide range of polymers, including polyolefins, styrene polymers, and engineering plastics, further broadens its potential applications and sets it apart from other antioxidants that may have more limited compatibility.

Remember, these distinctions are what make Irganox PS 802 a popular choice in numerous industrial settings.

Where can you access the technical datasheet for Irganox PS 802?

The technical datasheet for Irganox PS 802 can be accessed from Wellt’s official website. Known for its comprehensive and up-to-date product documentation, Wellt provides detailed specifications, properties, and application data for Irganox PS 802. The datasheet is designed to guide users in understanding the product and its optimal utilization. To access the datasheet, visit the Wellt website, navigate to the ‘Products’ section, and select ‘Irganox PS 802’ from the product listing. The datasheet can be viewed online or downloaded for future reference.

Applications and Uses of Irganox PS 802

Applications and Uses of Irganox PS 802

Utilizing Irganox PS 802 in the stabilization of polymers

Irganox PS 802 has a critical role in the stabilization of polymers, primarily due to its hindered phenolic antioxidant properties. When applied to polymers, it inhibits oxidation, thereby preventing the degradation of polymer chains. During processing or end-use applications, polymers are often exposed to heat and oxygen, which can lead to oxidative degradation. This degradation compromises the physical properties of the polymer, altering its color and reducing its strength, flexibility, and service lifespan. By integrating Irganox PS 802 into polymer manufacturing, industries can enhance the stability of their products, ensuring they withstand varying environmental conditions over time. It is essential to follow the recommended dosage levels as per the technical datasheet to provide optimal stabilization.

How is Irganox PS 802 used in various plastic materials?

Irganox PS 802’s utility in the plastic industry is broad and versatile thanks to its superior antioxidative properties. In Polyethylene (PE) and Polypropylene (PP) plastics, for instance, it prevents thermal oxidation during processing, thereby preserving the material’s color and structural integrity. It is also widely used in Polyvinyl Chloride (PVC) applications, where it imparts resistance against dehydrochlorination during processing and end-use applications. In Polyamides (PA) and Polyesters, Irganox PS 802 serves as a processing stabilizer, protecting these materials from heat-induced degradation during molding or extrusion. Furthermore, in Styrene-based polymers like Polystyrene (PS) and Acrylonitrile Butadiene Styrene (ABS), it mitigates yellowing and loss of mechanical properties due to oxidative degradation. Overall, the application of Irganox PS 802 varies based on the type of plastic and its processing conditions, so it’s crucial to adhere to the specific recommended dosage levels provided in the technical datasheet to ensure optimized performance.

Enhancing the long-term thermal stability of polyethylene power cables with Irganox PS 802

In the realm of power cable manufacturing, Polyethylene (PE) is a popular choice due to its superior electrical insulating properties. However, it’s prone to thermal and oxidative degradation over time, which can compromise its performance and safety. That’s where Irganox PS 802 comes into play. As an effective antioxidant, it can significantly enhance the long-term thermal stability of PE power cables. When incorporated into PE during the extrusion process of cable manufacturing, Irganox PS 802 forms a defensive barrier against oxidative and thermal degradation. This antioxidant effectively neutralizes harmful free radicals produced during the heating process, thus preventing the breakdown of PE chains and preserving the cable’s structural integrity. The result is a PE power cable with increased longevity, improved safety, and superior performance, even under elevated temperatures and over more extended periods of use. This application of Irganox PS 802 is an exemplary demonstration of its capacity to improve the durability and reliability of plastic materials in critical applications.

Benefits and Advantages of Irganox PS 802

Benefits and Advantages of Irganox PS 802

Exploring the general purpose and versatility of Irganox PS 802

Irganox PS 802 is a versatile and effective phenolic antioxidant designed for a broad range of applications. It is particularly effective in stabilizing plastics against oxidation. It is suitable for use with polyolefins, notably Polyethylene, polypropylene, and polybutene, as well as other polymers such as engineering plastics, styrene homo- and copolymers, elastomers, and other organic substrates. Its versatility extends to its compatibility with other additives, enabling synergistic combinations that enhance overall performance. With an active ingredient content of 98%, Irganox PS 802 boasts outstanding resistance to extraction and low volatility. These properties, combined with its excellent dielectric properties, make it a preferred choice in the manufacture of power cables and other electrical components. It remains effective in conditions of elevated temperature and extended service life, reinforcing its role as a key player in ensuring the durability and reliability of plastic materials in critical applications.

Understanding the role of antioxidant DSTDTP in combination with Irganox PS 802

The antioxidant Distearyl thiodipropionate (DSTDTP) plays a significant role when combined with Irganox PS 802, acting as a synergistic system to enhance the overall performance of polymers. DSTDTP is typically used as a secondary stabilizer and is particularly effective in preventing thermal oxidation. Being a thioester, it also contributes to the light stability of the system. In combination with Irganox PS 802, the blend carries the benefit of both antioxidants, thus effectively impeding oxidative degradation. This superior combination provides an improved heat aging performance, making it an excellent solution for applications that require resistance to high temperatures or long-term heat stability. The synergy of Irganox PS 802 and DSTDTP allows manufacturers to achieve the desired balance between performance, cost-effectiveness, and longevity of the polymer materials.

Assessing the benefits of using Irganox PS 802 in combination with phenolic antioxidants and ultraviolet absorbers

A detailed analysis reveals significant benefits when Irganox PS 802 is used in combination with phenolic antioxidants and ultraviolet absorbers. Studies show that phenolic antioxidants, renowned for their efficiency in halting the oxidation process, work exceptionally well with Irganox PS 802, leading to a remarkable increase in the overall stability of polymers. The synergy between these components prevents polymer degradation, enhances color stability, and extends the service life of the end product.

Moreover, the integration of ultraviolet absorbers with Irganox PS 802 further boosts the polymer’s defense against harmful UV radiation. Ultraviolet absorbers, known for their ability to absorb UV light and convert it into a less toxic form of energy, provide an additional layer of protection. They effectively prevent the adverse effects of UV radiation, such as discoloration, loss of mechanical properties, and reduction in molecular weight. The combination of Irganox PS 802, phenolic antioxidants, and ultraviolet absorbers offers a comprehensive solution for maintaining the integrity, aesthetics, and durability of polymer materials, even in the most demanding conditions.

Recommendations and Best Practices for Using Irganox PS 802

Recommendations and Best Practices for Using Irganox PS 802

Guidelines for optimal usage and dosages of Irganox PS 802

  1. Dosage: Depending on the polymer system and processing conditions, an optimal dosage of Irganox PS 802 generally falls within the range of 0.05% to 0.5% by weight. Lower dosages may be insufficient, while higher dosages could prove unnecessarily costly with little to no added benefit.
  2. Compatibility: Irganox PS 802 is compatible with a wide range of polymers. However, it’s crucial to test compatibility in your specific polymer system to ensure optimal performance and avoid any potential interaction issues.
  3. Processing Temperature: While Irganox PS 802 is designed to withstand high processing temperatures, it’s recommended to keep temperatures below its degradation point to ensure maximum efficacy and longevity.
  4. Storage Conditions: Store Irganox PS 802 in a cool, dry place, preferably sealed in its original packaging. This will protect the antioxidant from moisture and light, which could degrade its performance.
  5. Safety Measures: Always follow safety data sheet (SDS) guidelines when handling Irganox PS 802. Wear protective clothing and safety goggles, and ensure adequate ventilation in the workspace.

Best practices for combining Irganox PS 802 with other stabilizers and antioxidants

  1. Synergistic Effects: When using Irganox PS 802 in combination with other stabilizers and antioxidants, consider the potential for synergistic effects. Certain combinations may enhance the overall protective effect, providing superior stability and extended life for your polymer material.
  2. Avoid Overuse: While combining stabilizers can be beneficial, overuse of antioxidants could lead to adverse effects such as discoloration or changes in physical properties. Always experiment with smaller amounts first and increase incrementally only if necessary.
  3. Compatibility Testing: Ensure thorough compatibility testing is conducted before using multiple stabilizers together. This will help you avoid any unwanted chemical reactions or degradation in the performance of your polymer material.
  4. Consider the Polymer System: The effectiveness of combined stabilizers depends mainly on the specific polymer system in use. Research and understand the particular requirements and limitations of your polymer system before deciding on the combination.
  5. Adhere to Regulatory Guidelines: There may be restrictions on using certain combinations of stabilizers in specific applications, particularly in food contact or medical applications. Always adhere to local, national, and international regulatory guidelines when formulating your polymer system.

Recommending Irganox PS 802 for specific polymer and material applications

Irganox PS 802 is highly recommended for the stabilization of various polymers and materials due to its superior thermal stability and excellent processing performance. For instance:

  1. Polyolefins: This antioxidant is particularly efficient in stabilizing polyolefins, including but not limited to Polyethylene, polypropylene, and polybutene. It effectively reduces oxidative degradation, thus improving the lifespan of these materials.
  2. Engineering Plastics: Irganox PS 802 also plays a crucial role in enhancing the stability of engineering plastics such as polyamides and polyesters. It helps maintain the mechanical and optical properties of these materials under extreme conditions.
  3. Elastomers: This antioxidant is beneficial for a range of elastomers, helping to preserve their elasticity and physical properties against thermal degradation. This extends their utility in various application areas, including automotive and industrial components.
  4. Adhesives and Sealants: The use of Irganox PS 802 in adhesives and sealants helps to maintain their adhesive strength and durability by inhibiting oxidation.

Remember, while Irganox PS 802 brings significant benefits, it is essential to conduct thorough compatibility testing and adhere to regulatory guidelines when using it in specific applications.

Accessing Irganox PS 802 and Getting Started

Accessing Irganox PS 802 and Getting Started

Exploring methods to obtain Irganox PS 802 for industrial and commercial use

Obtaining Irganox PS 802 for industrial and commercial use generally involves identifying a reliable supplier, getting quotes, and placing an order. It is critical to ensure that the supplier has adequate stock to meet demand and can guarantee consistent product quality. Suppliers may range from specialized chemical distributors to global trading platforms. Here are some potential channels for obtaining Irganox PS 802:

  1. Specialized Chemical Distributors: Several companies specialize in distributing industrial chemicals, including antioxidants such as Irganox PS 802. These companies often provide bulk purchasing options and may offer competitive prices due to their direct relationships with manufacturers.
  2. Direct Purchase from Manufacturers: If feasible, businesses can contact the manufacturer directly to purchase Irganox PS 802. This method usually guarantees product authenticity and might offer price advantages, but it often requires minimum purchase quantities.
  3. Global Trading Platforms: Online trading platforms like Alibaba and IndiaMART connect buyers directly with manufacturers and distributors worldwide. These platforms offer a wide range of suppliers to choose from and allow for the comparison of product quality, prices, and shipping options.
  4. Local Industrial Chemical Suppliers: For smaller quantities, local chemical suppliers can be a viable option. Though their prices may be higher, they often offer faster delivery and lower shipping costs.

Remember to consider factors such as delivery times, shipping costs, product certification, and supplier reliability when choosing a sourcing method for Irganox PS 802. Always ensure adherence to regional and national regulations regarding the importation and handling of industrial chemicals.

Accessing technical support and assistance for utilizing Irganox PS 802

Technical support and assistance for utilizing Irganox PS 802 can be obtained through several channels. The first option is to contact the Manufacturer’s Technical Support. Many chemical manufacturers offer technical support services for their products, which can provide detailed guidance on product use, storage, and safety precautions. Another option is to seek Professional Consultation: Industry experts or specialized consultants can provide personalized advice based on your specific use case and requirements. Online Forums and Communities: Platforms like ResearchGate or technical chemical forums can be a rich source of peer advice and shared experiences. Lastly, Chemical Training Courses and Workshops: Various organizations offer training courses on industrial chemicals handling and usage, which can be invaluable for understanding the complexities of products like Irganox PS 802. Always ensure that the advice or training you receive is consistent with the manufacturer’s recommendations and aligns with applicable safety regulations.

Getting started with Irganox PS 802: A step-by-step guide

  1. Understanding the Data Sheet: Begin by thoroughly understanding the product’s technical data sheet. This document, provided by the manufacturer, includes vital details about the chemical’s physical and chemical properties, potential hazards, storage conditions, handling precautions, and emergency procedures.
  2. Material Compatibility: Check the material compatibility of Irganox PS 802 with the equipment and containers intended for its storage and application. Certain materials may react adversely with the chemical, which could result in compromised safety or efficacy.
  3. Laboratory Tests: Conduct preliminary laboratory tests using small quantities of Irganox PS 802. This allows you to observe and record the chemical’s behavior under controlled conditions and better understand its practical applications and limitations.
  4. Safety Measures: Review safety procedures and protective measures necessary when handling Irganox PS 802. This includes appropriate personal protective equipment (PPE), which may include gloves, safety goggles, and lab coats, as well as preparation for potential spills or accidents.
  5. Record Keeping: Maintain meticulous records of the usage, storage, and disposal of Irganox PS 802. This is essential for safety, auditing, and troubleshooting purposes.

Remember, the information contained in this guide serves as a general roadmap. Always refer to the manufacturer’s specific guidelines and consult with a chemical expert or technician for advice tailored to your unique circumstances.


  1. BASF – Irganox® Additives for Plastics: This source is from BASF, the manufacturer of Irganox PS 802. It provides a broad overview of the product line, emphasizing its effectiveness in ensuring processing stability and the long-term thermal stability of polymers.
  2. Gap Chemical – Irganox® PS 802: This document contains detailed technical data about Irganox® PS 802. It discusses its use as a heat stabilizer in combination with a phenolic antioxidant.
  3. Polymer Additives – Irganox® PS 802 FL Stabilizer by BASF: A page from Polymer Additives detailing the specifics of Irganox® PS 802 FL, a variant of the product. It provides information on its general-purpose heat-stabilizing capabilities.
  4. B2B Composites – CibaR IRGANOX® PS 802: This document offers safety data and chemical properties of Irganox PS 802, including its use as a heat stabilizer.
  5. Additives for Polymer – Irganox PS 802, Antioxidant DSTDP: This page discusses the use of Irganox PS 802 as an auxiliary antioxidant in various polymeric materials.
  6. SlideShare – Antioxidant step antioxidant step irganox ps 802 cas 693: A presentation that provides a comprehensive overview of Irganox PS 802, including its chemical formula and applications.
  7. BASF – IRGANOX®: This page from the manufacturer’s website highlights the efficiency and non-discoloring properties of Irganox antioxidants.
  8. BASF – Antioxidants – Plastics & Rubber: A page from BASF providing information on the application of Irganox antioxidants in rubber and plastic industries.
  9. 4SPE Publications – Photocrosslinking of ethyleneâ•’vinyl acetate (EVA): An academic paper discussing the application of Irganox PS 802 in photocrosslinking of polymers for industrial applications.
  10. ACS Omega – Identification of Additives in Polypropylene and There: A research article from ACS Omega discussing the role of additives like Irganox PS 802 in the development of commercial polymeric materials.

Recommend reading: Top-Quality Antioxidant DSTDP And Irganox PS 802 From Wellt

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