LeNOX – ANTIOXIDANT 626

LeNOX – Antioxidant 626 in india | Supplier Laveek Addchem


Technical Datasheet

LeNOX – ANTIOXIDANT 626

Chemical Name: Bis-(2,4-di-tert.-butylphenol)pentaerythritol diphosphite
Molecular formula: C33H50O6P2
Molecular Weight: 604
CAS: 26741-53-7
Chemical Structure :

LeNOX - ANTIOXIDANT 626

LeNOX – Antioxidant 626

Physical Properties:

AppearanceWhite to off-white powder
Melting Range170-180℃
Purity≥99%
Acid value (mg KOH/g)≤0.3
Light Transmittance425nm≥98%
500nm≥98%
Volatiles≤0. 3%
Hydrolyze time (h)≥14
Active Content>99%


Solubility: (At 20℃g/100ml solvent) :

WaterInsoluble
Benzene34
Acetone1
Ethyl Acetate4


Feature/Benefits :
LeNOX – 626 recommended to be used in rigorous processing conditions.
LeNOX- 626 provide significant advantages, such as:

Long-term thermal stability during process
Less color change of higher temperature processing application.
Maintenance of initial melt flow rate

it can also be used in polymers such as engineering plastics, styrene homo-and copolymers. Polyurethanes, elastomers, adhesives, and other organic substrates.

More Details About LeNOX – Antioxidant 626

LeNOX® – Antioxidant 626

LeNOX® Antioxidant 626 is a high-performance organophosphite secondary antioxidant used to improve the thermal and oxidative stability of polymers during processing and long-term service. It is especially valuable in polymer formulations where excellent color protection, processing stability and hydrolytic stability are required.

Laveek Addchem supplies LeNOX® Antioxidant 626 in India for plastic, polymer, masterbatch, rubber and related applications.

Product Highlights

  • High-performance organophosphite antioxidant
  • Excellent processing stability
  • Helps protect polymers against thermo-oxidative degradation
  • Effective hydroperoxide decomposition
  • Good color protection during processing
  • Excellent hydrolytic stability
  • Low volatility
  • Good compatibility with polymer systems
  • Suitable for demanding high-temperature processing
  • Can be combined with primary phenolic antioxidants

How Does Antioxidant 626 Work?

During polymer processing, high temperatures and oxygen can generate hydroperoxides and free radicals that accelerate polymer degradation.

LeNOX® Antioxidant 626 acts as a secondary antioxidant, helping convert hydroperoxides into more stable products before they can generate additional degradation reactions.

This makes it particularly useful in combination with primary antioxidants such as:

LeNOX® Antioxidant 1010 + LeNOX® Antioxidant 626

or

LeNOX® Antioxidant 1076 + LeNOX® Antioxidant 626

The combination provides complementary stabilization and can improve processing stability, color retention and long-term polymer performance.

Key Benefits

Excellent Processing Stability

Helps polymers withstand high-temperature processing conditions such as extrusion, injection molding and compounding.

Improved Color Stability

Helps minimize oxidation-related discoloration during polymer processing and repeated thermal exposure.

Hydrolytic Stability

Compared with some conventional phosphite stabilizers, appropriate 626-type organophosphites offer strong resistance to hydrolysis, making them useful in demanding polymer formulations.

Effective Secondary Antioxidant

Works primarily as a hydroperoxide decomposer, complementing primary phenolic antioxidants.

Low Volatility

Suitable for applications where retention of the stabilizer during processing is important.

Long-Term Polymer Protection

Can contribute to improved retention of polymer properties during thermal aging.


Applications of LeNOX® Antioxidant 626

Polypropylene – PP

  • PP compounds
  • Injection molding
  • Extrusion
  • Automotive components
  • Household products
  • Industrial components
  • PP masterbatch

Polyethylene – PE

  • HDPE
  • LDPE
  • LLDPE
  • PE compounds
  • Films
  • Pipes
  • Containers
  • Extruded products

Engineering Plastics

Suitable for selected applications involving:

  • ABS
  • HIPS
  • Polyamide
  • Polyester
  • Polyurethane
  • Polycarbonate
  • Other engineering polymer compounds

Masterbatch & Polymer Compounding

LeNOX® Antioxidant 626 can be incorporated into polymer additive packages used for:

  • Color masterbatch
  • Filler masterbatch
  • Black masterbatch
  • Polymer compounds
  • Recycled polymer compounds
  • Specialty polymer formulations

Antioxidant 626 in Recycled Plastics

Recycled polymers can undergo repeated heating and processing, increasing the possibility of oxidative degradation.

An appropriate antioxidant package containing a primary antioxidant and secondary antioxidant can help improve the stability of recycled polymer formulations.

LeNOX® Antioxidant 626 may therefore be considered for selected:

  • Recycled PP
  • Recycled PE
  • Reprocessed plastics
  • Polymer compounds
  • Recycled masterbatch

Actual performance depends on the polymer’s previous processing history, contamination, stabilizer package and processing conditions.


Antioxidant 626 + Phenolic Antioxidants

One of the most important advantages of organophosphite antioxidants is their ability to work synergistically with primary phenolic antioxidants.

StabilizerMain Function
Antioxidant 1010Primary radical scavenger
Antioxidant 1076Primary radical scavenger
Antioxidant 626Secondary hydroperoxide decomposer

This complementary mechanism can provide a more comprehensive stabilization system than using either antioxidant type alone.


Industries

LeNOX® Antioxidant 626 is suitable for consideration in:

Plastic Processing – Injection molding, extrusion and blow molding.

Polymer Compounding – PP, PE, ABS and engineering plastics.

Masterbatch – Color, additive and filler masterbatch.

Automotive Plastics – Polymer components exposed to thermal and processing stresses.

Wire & Cable – Selected polymer and cable-compound applications.

Rubber & Elastomers – Selected synthetic rubber and elastomer formulations.

Recycling – Stabilization of selected recycled and reprocessed polymer systems.


Why Choose Laveek Addchem?

Laveek Addchem provides specialty polymer additives and antioxidant solutions to customers across India.

With LeNOX® Antioxidant 626, customers can benefit from:

  • Reliable industrial supply
  • Pan-India distribution
  • Application-oriented technical support
  • Polymer additive expertise
  • Bulk supply capability
  • Support for antioxidant combinations
  • Product documentation and technical assistance

Technical Information

For your website, I recommend displaying the technical specification separately from the marketing description:

PropertyInformation
ProductLeNOX® Antioxidant 626
TypeOrganophosphite Secondary Antioxidant
Chemical FamilyPhosphite Antioxidant
FunctionHydroperoxide Decomposition
Physical FormPowder / Solid
Main BenefitsProcessing, thermal & color stability
ApplicationsPlastics, polymers, masterbatch & compounds