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Primary antioxidant for coatings and plastics

Hostanox® O 3 pills

Hostanox O 3 pills is a highly efficient phenolic antioxidant with high resistance against hydrolysis, providing long term heat stabilization to polyolefins and polyamide especially for applications where the final article comes in contact with extractive media such as water, fat etc.

  • Exceptional resistance to extractive media and chlorinated water
  • Excellent booster for OIT for pipes applications
  • High color retention
  • Powder coatings: Anti Oxidant with good hydrolysis resistance and prevent yellowing upon heat exposure

The product does not require a hazard warning label according CLP regulation (Regulation (EC) No. 1272/2008, as amended).
For further information please refer to the Material Safety Data Sheet.

Chemical Composition

Chemical nature:        Ethylene bis[3,3-bis(3-tert-butyl-4-hydroxyphenyl)butyrate]

Classification:             Process stabilizer for fibres and plastics


Delivery Specifications and (*) General Properties 

Characteristics Unit Target value Test method
Appearance   slightly yellowish pills QM-AA-634
Gardner color   max. 3 ISO 4630 (50% in methanol)
Melting point [%] min. 167 QM-AA-146 (after tempering 4h at 140°C)
Application Plastics

Hostanox O 3 pills is recommended for the stabilization of polyolefins (PP, HDPE, LLDPE), Polyamides, ABS, styrenic polymers, polyesters, synthetic elastomers, adhesives, and many other organic substrates and in particular for engineering thermoplastic elastomers with a high extraction resistance. In combination with sulphur containing co-stabilizers, such as Hostanox SE 10 and Hostanox SE 4, it leads to a pronounced synergistic effect concerning long term thermal stability respectively oven life.

Application Coatings

Hostanox O 3 pills is recommended especially for the applications where polymers and/or binders are cured at elevated temperature and need thermo-stabilization, e.g. powder coatings, coil coatings and specific solventborne coatings.

Packaging and Handling

Delivery form
The product is also available in other physical form.

Cartons with PE-Inliner 25 kg
Pallet 500 kg (20 cartons)

For best shelf life store this product in a dry area at normal ambient temperatures.
Minimum shelf life is three years from date of shipping when properly stored.



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Hostanox® O 3 pills

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