BNX 1900

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BNX 1900 (2082-79-3 & 31570-04-4) is a synergistic blend of 20% BNX 1076 and 80% Benefos 1680.  This blend of both a primary and secondary antioxidant provides excellent heat stability and antioxidation, with good compatibility with resins and excellent extraction resistance.


Chemical Name:       

 BNX 1076:             20% Stearyl-3-(3’,5’-di-tert-butyl-4-  hydroxyphenyl) propionate

 Benefos 1680:       Tris (2,4-di-tert-butylphenyl) phosphite

CAS Number:          BNX 1076:             2082-79-3

                                Benefos 1680:       31570-04-4

Chemical Structure:

BNX 1076:                                                                Benefos 1680:

BNX 1076b   Benefos 1680

Typical Properties         

Product Form:                   Solid

Molecular Weight:             BNX 1076:       530.9

                                          Benefos 1680: 647


Please refer to the product data sheets for BNX 1076 and Benefos 1680 for solubility information.


BNX 1900 is a convenient blend of both a primary and secondary antioxidant. This synergistic blend addresses a broad range of stabilization needs. It is primarily recommended for use in polyethylene and ethylene-copolymers such as ethylene-vinyl acetate copolymers. BNX 1900 can also be used in other polymers such as engineering plastics, polycarbonates, polyesters, styrene homo- and copolymers, polyurethanes, elastomers, adhesives, and other organic substrates.


  • Ease and convenience for compounding operations
  • Maintenance of original melt flow
  • Low color contribution
  • Improvement of long-term stability
  • Low volatility at high processing temperatures
  • Resistance to hydrolysis
  • Extensive FDA clearances

Guidelines for Use

Typical recommended loading concentrations range between 0.1% and 0.5%. BNX 1900 is also suitable for use in combination with light stabilizers, including hindered amine light stabilizers (HALS), UV absorbers, and benzoates. The exact formulation to be used is dependent on the substrate, performance requirements, and other factors, and should be determined by the user based on testing to simulate actual conditions of use. Please contact Mayzo for specific recommendations.


This product may be stored up to two years in a sealed container. Containers should be kept tightly closed when not in use and stored in a cool, dry place.


Please consult the Safety Data Sheet (SDS) prior to handling or using this product.

FDA Regulations

The components of BNX 1900 have extensive FDA clearances, including in adhesives, olefin polymers, ethylene-vinyl acetate copolymers, polystyrene (including rubber-modified polystyrene), polycarbonates, and acrylic plastics. Please contact your Mayzo representative for complete details, including restrictions of use.

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