Antioxidant ST - 135

Name of foreign counterpart：IRGANOX L135

Typical chemical and physical properties： 

ST-135 is a liquid high molecular weight phenolic antioxidant for lubricating oils

Appearance         Clear, yellow liquid

Density at 20 C      0.96 g/cm3

Viscosity at 40 C     123 mm2/s

Flash point          152 °C, Pensky-Martens

Solubility

Ester > 5 %

Mineral oil > 5 %

Water < 0.01 %

Applications and typical treat levels recommended:

Industrial lubricants 0.1 - 0.5 %

Engine oils 0.2 - 0.8%

Benefits :

Contributes to piston cleanliness in engine oils - both diesel and gasoline

Replaces solid methylene-bis-phenols in a cost-effective manner

Low water extractability

Offers excellent solubility in mineral oil and non-conventional base stocks

Contains no diluents

Easy to handle bright liquid

No tendency to crystallise even at low temperatures