Fuels & Aviation Fuels

IONOL® antioxidants are excellent stabilizers for all grades of kerosene based Jet A1 fuel for civil and military use. The concentration needed to protect and stabilize aviation fuels is also defined by these international specifications. For example, DERD 2494 specifies an addition level in the range of 17.0 – 24.0 mg/L for hydrotreated fuels.



The continual development and improvement of the internal combustion engine has made increasing demands on Iubricants. Increasing Crankcase oil temperatures and increasing longevity of vehicles in general require ever higher performance and stability from lubricating oils to prevent oxidation.

Oxidation contributes to piston ring sticking, formation of sludge within the oil, and an overall breakdown of the viscosity characteristics of the lubricant. As free radical scavengers, one IONOL® molecule can inhibit and help prevent the oxidation of many oil molecules, extending the useful life of lubricants and transmission fluids.

IONOL® 220, IONOL® 103, IONOL® 135 and IONOL® 99 are highly effective antioxidants for multigrade Iubricants, automatic transmission fluids, differential fluids and turbine oils.

Also IONOL® antioxidants have shown to increase the useful life of many industrial oils, reducing equipment downtime. Applications include hydraulic fluids, transformer oils, spinning oils and metal rolling and cutting fluids.


Polymer, Elastomers & Rubbers

Oxidation is an important limiting factor in all thermoplastics and thermosetting resins. Its effects include adverse colour change, loss of flexibility, loss of tensile strength and elongation, reduced impact resistance, cracking and other surface deterioration. Oxidation can also affect the molecular weight of a polymer, which in turn affects its other properties.

The oxidation of latex and rubber compounds can have different effects, depending on the type of polymer involved. Problems include adverse colour changes, loss of flexibility, loss of tensile strength and reduced impact resistance, ageing, cracking and other surface deterioration.

Oxiris IONOL® products are widely used in polyols for flexible polyurethane foams, where it protects the polyol during production and long-term storage, as well as preventing scorching during the formation of the polyurethane foam. Furthermore, IONOL® products are also used in the production of colourless stabilized polyolefins as well as PVC and PVB films.

IONOL® antioxidants are widely used in most natural and synthetic lattices and rubbers.



The IONOL® BF range – 100% active, no harm approved stabilizers with superior performance.

In every phase of its lifecycle, from manufacturing to storage to combustion in the engine, biodiesel is subjected to oxidative influences. The process starts with degradation reactions that cause undesired polymers, aggressive acids and peroxides. Due to its natural composition, biodiesel ages a lot faster than fossil diesel and its use-by date is very often exceeded by the time the biofuel finally makes it to the end-user.

The international biodiesel norms, (e.g. EN 14214 or ASTM D 6751) demand the adherence to the specified oxidation stability. The global specifications for fossil diesel (e.g. EN 590 or ASTM D 975) clearly prescribe that only in-spec biodiesel may be blended with fossil diesel.

Oxiris has developed a range of Antioxidants that significantly extend the shelf life of Biodiesel so it remains in-spec – enabling longer storage and transit times and remove the need for costly emergency treatment at a later date: Specifically designed to optimize biodiesel stability our range of additives is marketed under the brand name IONOL® for BioFuel, or IONOL® BF for short.

As the base fatty acid for the biodiesel can influence how much and which antioxidant is required, Oxiris also offer a RANCIMAT testing service that allows us to use our own in-house expertise to individually recommend the optimum antioxidant solution for each customer.


Leather, Coatings and Inks

During the process of tanning, fat is dissolved from the animal skin. Further on in the process, the “wet-blue” has to pick up fat again. These fats, made from different native fats, are called fat liquors. IONOL® Technical Grade, IONOL® CPC or IONOL® 135 are used to stabilize the feed stock of the fat liquors.

The addition of either IONOL® Technical Grade, IONOL® CPC or IONOL® 135 helps maintain overnight stability, reduce run-resistance and improve gloss and hard drying properties in most general-purpose printing inks. IONOL® Technical Grade or IONOL® CPC in lithographic inks also prevents skin formation and even promotes drying.