EC is a solvent-based formulation type where the active ingredient is dissolved in an organic carrier with emulsifiers. Agrospear produces EC formulations with stable emulsion performance and active content accuracy of ±2%.
Specifications verified: 2026-08-01
Emulsifiable Concentrate (EC) is one of the longest-established and most widely used agrochemical formulation types. The active ingredient is dissolved in an organic solvent together with emulsifier blends, producing a clear or translucent liquid that forms a stable oil-in-water emulsion when diluted in the spray tank.
How EC formulation works
The active ingredient is fully dissolved in a solvent system — typically an aromatic or aliphatic hydrocarbon, or a polar solvent such as N-methylpyrrolidone depending on solubility. A blend of non-ionic and anionic emulsifiers is added at a ratio optimized for the specific solvent-ai pair. When the farmer pours the EC into water, the emulsifier system creates a fine oil-in-water emulsion with droplets typically in the 1–5 μm range, distributing the active ingredient uniformly throughout the spray volume.
Benefits of EC formulations
EC formulations remain a staple of crop protection for several practical reasons:
- Fast action — the solvent carrier can penetrate cuticular wax layers, accelerating uptake and rainfastness
- Excellent penetration — dissolved active ingredient enters plant tissue more readily than suspended particles, giving superior contact and translaminar activity
- Simple production — dissolution and blending require less specialized equipment than wet milling (SC) or granulation (WDG), making EC cost-effective at scale
- Broad compatibility — EC tank-mixes well with many other formulation types and adjuvants
- High active loading — many active ingredients reach higher concentrations in EC than in water-based formulations
Agrospear EC specifications
Every EC batch produced at Agrospear meets or exceeds these validated specifications:
| Parameter | Specification | |-----------|--------------| | Emulsion stability | No creaming after 1 hour (342 ppm hard water) | | Active content | Nominal ±2% | | pH (1% aqueous dilution) | 4.0–7.0 | | Persistent foam (1 min) | < 60 mL | | Cold stability | No separation or crystallization at 0°C / 7 days | | Accelerated stability | Pass at 54°C / 14 days | | Shelf life | 2 years at ambient storage |
Emulsion stability is the critical quality parameter for EC. Agrospear tests every batch in standard hard water (342 ppm CaCO₃) at the recommended dilution ratio — no creaming, no oil separation, no sediment after one hour. This ensures that the spray concentration reaching the crop is the concentration the farmer intended.
Production at Agrospear
EC production runs on a dedicated blending line equipped with heated dissolution vessels, inline homogenizers and automated filling. Solvent and emulsifier compatibility is pre-validated during formulation development; every batch is tested for emulsion stability, active content and pH before release.
Ready to spec an EC product for your brand? See our <a href="/oem-manufacturing">OEM/ODM manufacturing program</a> or walk the <a href="/factory">production line</a> where EC formulations are blended and filled.
Read the full formulation walkthrough: <a href="/technology/emulsifiable-concentrate-ec">Emulsifiable Concentrate deep dive</a>.
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