Anti-caking agents for fertilizers – effective protection against caking and biodegradable BIO solutions

Anti-caking agents for fertilizers – effective protection against caking and biodegradable BIO solutions 05 March 2026

Anti-caking agents for mineral fertilizers – granule stability, quality, and compliance with EU regulations

Anti-caking agents for mineral fertilizers are key technological additives used to prevent fertilizer caking during production, storage, and transport.

Fertilizer caking leads to:

  • loss of flowability,

  • spreading difficulties,

  • material losses and quality claims.

Polwax S.A. offers specialized anti-caking agents for fertilizers that form an effective protective coating on granule surfaces, improve physical stability, and help maintain quality parameters throughout the supply chain.

Preventing fertilizer caking – how do anti-caking coatings work?

The caking of mineral fertilizers mainly results from:

  • moisture absorption,

  • pressure during storage,

  • hygroscopic properties of components,

  • temperature fluctuations during storage and transport.

Anti-caking coatings create a thin protective layer that:
✔ limits moisture absorption
✔ reduces friction between granules
✔ minimizes lump formation during storage
✔ improves spreading uniformity and precision

This enables effective caking prevention and reduces logistical losses.

Paraffin-based anti-caking agents for fertilizers – proven industrial solutions

Polwax’s portfolio includes paraffin-based anti-caking agents for mineral fertilizers used in the production of nitrogen, phosphate, and multi-component fertilizers.

AGROWAX
An anti-caking agent for NP and NPK fertilizers, improving granule stability and reducing dusting.

SALWAX
An effective additive for fertilizers containing ammonium nitrate, ensuring stability under demanding storage conditions.

GRANOMA PLUS
Dedicated to phosphate fertilizers and blends containing ammonium sulfate – guarantees flowability and granule durability.

FLOW WAX 6AT
A universal anti-caking agent with a low solidification point, designed for dosing systems without the possibility of heating above 50°C.

Formulations are selected individually, taking into account fertilizer type, target market climate conditions, and supply chain length.

BIO anti-caking agents – biodegradable additives for the fertilizers of the future

Growing environmental requirements and regulatory changes in the EU are increasing the importance of biodegradable fertilizer additives.

BIO anti-caking agents developed by Polwax are modern solutions based on naturally derived raw materials that:
✔ are made from biodegradable resources
✔ leave no persistent mineral residues
✔ effectively reduce caking and dusting
✔ support producers’ ESG strategies

FLOW BIO 5
A universal BIO anti-caking agent for a wide range of mineral fertilizers.

FLOW BIO 8
A high-efficiency formula designed for fertilizers particularly prone to caking.

Anti-caking agents and EU regulations – preparing for upcoming changes

Proposed EU regulations concerning fertilizers and technological additives assume compliance with specific biodegradability criteria.

Implementing BIO anti-caking agents today allows producers to:

  • secure regulatory compliance,

  • reduce the risk of future technological changes,

  • build a competitive advantage in the European market.

Traditional or BIO? A comprehensive portfolio of fertilizer anti-caking agents

Polwax offers both classic paraffin-based anti-caking agents and modern biodegradable BIO additives.

This approach enables fertilizer producers to:

  • build a diversified product portfolio,

  • optimize operating costs,

  • reduce storage and transport losses,

  • improve the physical stability of mineral fertilizers.

A properly selected anti-caking agent is not a cost – it is an investment in quality, logistical safety, and production process stability.

Anti-caking agents for fertilizers – technological consulting and formulation selection

Each fertilizer type requires an individual approach.

Polwax S.A. cooperates with fertilizer manufacturers in:

✔ fertilizer composition analysis
✔ caking tendency assessment
✔ selection of the appropriate formulation
✔ optimization of application parameters

Contact our technical team to select a mineral fertilizer anti-caking agent tailored to your production technology.