Introduction 

The EU regulatory framework is undergoing one of its most significant transformations in a decade. Updates to REACH, the PPP Regulation (EC 1107/2009), new hazard classes (Regulation 2023/707), and the ongoing debate on microplastics in seed coating are reshaping how co-formulants must be selected, documented, and justified. 

This article provides a clear, evidence-based technical guide to help R&D, formulation and regulatory teams prepare their co-formulant portfolio for the 2030 environment. 

1. Why EU Regulation Is Reshaping Co-Formulation 

Key regulatory shifts include: 

• REACH (EC 1907/2006) + UK-REACH, KKDIK 
• PPP Regulation (EC 1107/2009) revising non-acceptable co-formulants 
• Data requirements: Regulations 283/2013 & 284/2013 
• Regulation 2023/707 introducing new hazard classes 
• High scrutiny on microplastics, especially in seed-coating 
• Regulation (EU) 2019/1009 for fertilizers and biostimulants 

These updates demand higher transparency, stronger data packages and lower tolerance for compositional ambiguity. 

2. What This Means for Formulators 

Greater Traceability 

Co-formulants require full visibility on origin, manufacturing process and specification. 

Reduced tolerance for regulatory uncertainty 

Ingredients without clear documentation may jeopardize authorizations and renewals. 

High demand for data-driven decisions 

Performance alone is no longer enough. Data must support: 

• compatibility, 
• stability under real and accelerated conditions, 
• environmental behavior, 
• degradability, 
• interactions with actives and other formulation aids.

Balancing efficacy with regulatory durability 

Formulations must remain robust without compromising future compliance. 

3. Technical Requirements for 2030-Ready Co-Formulants 

• Biodegradability and safer environmental profile 
• Stability and compatibility demonstrated under stress conditions 
• Full traceability and transparent documentation 
• Compliance with REACH and PPP frameworks 
• “Future-proof” suitability to withstand upcoming revisions 

4. How to Prepare Your Portfolio (Practical Checklist) 

1) Conduct a regulatory audit 

Identify sensitive or potentially restricted ingredients. 

2) Prioritize data-backed alternatives 

Select co-formulants supported by robust evidence and transparent specifications. 

3) Run compatibility and stability programs 

Ensure shelf-life, temperature behavior, and interaction with actives are fully validated. 

4) Strengthen documentation and traceability 

Include TDS, SDS, origin, compositional transparency and variability. 

5) Build a long-term transition plan 

Especially for seed-coating polymers, adjuvants and surfactants. 

5. A Technical Example: Transitioning Toward Microplastic-Free Seed Coating 

Industry-validated approaches now integrate: 

• dusting and flowability testing, 
• spectral imaging (Videometer), 
• growth chamber validation, 
• EPA tolerance-exempt classifications, 
• demonstrated physical-chemical stability, 
• robust regulatory documentation. 

This illustrates how forward-looking co-formulants can mitigate regulatory risk while maintaining performance. 

Conclusion 

The 2030 EU regulatory landscape demands co-formulants that are transparent, stable, traceable and scientifically supported. Preparing now enables: 

• safer product development, 
• smoother registration, 
• reduced regulatory risk, 
• and greater formulation confidence. 

The path forward is clear: anticipate, document and build on robust science.