Seqens is a specialist in the production of calcium sulfonate. We developed a wide range of anticorrosion additives for temporary to long-term metal protection.

High performance additives and packages to foster your product innovation and performance

Choose our unique solutions and improve your product performance

Seqens offers a unique range of corrosion & rust prevention additives based on calcium sulfonates chemistry. Thanks to our deep production experience, we are able to manufacture products with extensive combination of features to best fit customer needs.

The flexibility of Seqens plants enables to offer comprehensive solutions thanks to low- or high- production batch size, adjustable process parameters, customized packaging and labelling and worldwide logistics. Along with flexibility, Seqens emphasizes quality. Our quality-control and quality-assurance teams rely on cutting edge laboratory equipment and well defined procedures to comply with the highest quality standards.

Find your solution in our proprietary portfolio

Withstand your short- and long-term protection issues during storage, transportation and in final-use thanks to ARCOT® neutral and overbased calcium sulfonates.

We also manufacture ready-to-use packages which feature beneficial additive synergies identified through DoE approach (Design of Experiments). Our customers hence increase the performance of their formulated products while reducing the number of listed raw materials.

Benefit from our R&D support to fine-tune formulations

Relying on our centralized R&D center, we boost our clients’ custom developments. Our know-how gives our customers the opportunity to formulate innovative products matching market needs. We successfully address the challenges of our industry thanks to our dedicated facilities, our highly qualified employees, and our newest technologies.

Our dedicated R&D team has gained a renowned expertise in the formulation of calcium sulfonates in different carriers, while years of successful developments deepen our application-oriented knowledge. We are able to help you optimize your formulae through relevant advice considering industrial applications.

Our locations

Address PCAS, ZI de Limay 2, 8 Rue de Rouen
78440 Porcheville
Phone +33 1 34 79 57 00
Market Pharmaceutical, Specialty Ingredients & Cosmetics
More information

Surface: 40, 000 m²

Lab surface: 2, 000 m²


  • 4 kilo-labs
  • 2 cGMP pilot plants with 11 multipurpose reactors from 100 L to 2, 800 L (total capacity of 12 m³)
  • Temperature range: -15/+150°C  (hastelloy reactor: -80/+200°C)
  • 3 finishing rooms (agitated filter dryers, filters, dryers, milling and sieving equipments)

Flagship technologies:

  • Crystallization expertise and technologiesd(salt, co-crystal and polymorph screenings, process development)
  • Process Safety expertise and tecnologies
  • Flow chemistry for fine chemicals
  • Potent API process development
  • Genotoxic Impurities
  • Issue Management
  • Generic A.P.I Solid state expertise

Last inspection: ANSM  October 2018

Certification: GMP

Number of scientists: 110

Other: Ecosystem Pharma with integrated services

Address PCAS, Route de Lassay
61410 Couterne
Business Line Lubbricant Additives, Fine Chemicals
Phone +33 2 33 37 50 20
Market Specialty Ingredients
More information

Surface: 120, 000 m²


Capabilities: 190 m³ of ISO 9001 reactors and kilo-lab

Flagship technologies: Most standard organic synthesis reactions (large volumes)