Antioxidant ST - 115

Equivalent replacement of foreign counterpart：IRGANOX L115

Chemical description:High molecular weight phenolic antioxidant containing a thioether group

Appearance:  Crystalline, white to slightly yellow powder

Applications and typical treat levels  

Synthetic and partial synthetic lubricants

 PAO  0.2-0.3%

 PAG  0.1-0.5%

Engine oils 0.5-0.8%

Benefits  

• Ashless solid with low volatility

• Permits reduced losses under high temperature operating conditions

• Offers superior thermal stability over conventional phenolic antioxidants such as BHT and  

• methylene-bis-phenols

• Offers excellent activity in CIGRE test

• Provides multifunctional activity as primary and secondary antioxidant

• Approved by FDA/USA for use in blending food grade lubricants

  Note

   Solubility in mineral oil is less than 0.5% and should be checked in finished fluid