Seqens has longstanding experience in up-scaling and custom manufacturing of chemicals for various industries (fine chemicals, lubricants, electronics…). We offer our expertise, industrial know-how and flexible facilities to expand your production capabilities, should it be occasional or on the longer term.


Seqens is a European reference in industrialization of high value added custom materials, granting flexibility and reliability to its customers (from the early stage of upscaling development).

Offering multi-step synthesis, process optimization and cost reduction advice, Seqens also has strong assets to integrate your supply chain as an outsourcer in the case of “make or buy” decisions.

Seqens highly flexible technological platform adapts to your requirements and meets your needs. Our toolbox of chemistries and processes provides you with the best tailor-made solutions with high quality standards.


Seqens teams closely collaborate with customers to understand their requirements and major hurdles all along the projects.

Scientists and state-of-the-art lab equipment, located in our R&D centers (France and Canada), allow us to support customer innovation within contract research projects.

Partnerships have been formed with leading companies in many industrial sectors including :

Fine chemicals


  • Active ingredients
  • Functional ingredients
  • Home care products


  • Energetic materials
  • Propellants
  • Structural polymers

ENERGy storage

  • Cathode & electrolyte material
  • Batteries
  • Supercapacitors

fluid processing

  • Separation specialties
  • Ion exchange resins


  • Additives
  • Binders


  • Complex polymers
  • Additives

Lubricant additives


  • Antiwear additives
  • Emulsifiers and corrosion inhibitor additives
  • Extreme pressure additives
  • Packages

Metal protection

Short term protection (storage, transportation etc.)

  • Neutral calcium sulfonates
  • Amorphous or crystalline overbased calcium sulfonates

Medium and long term protection (construction, automotive manufacturing etc.)

  • Overbased calcium sulfonates (calcite)
  • Solvent, mineral oil, wax and water-based

Packages for corrosion and rust prevention

  • Temporary or long term protection
  • Indoor and outdoor
  • Ready-to-use
  • Barium free

High Tech Grease

Calcium sulfonate carbonate greases

  • From NLGI grade 0 to 3
  • Ready to use
  • Customized on demand
  • Carriers
  • Mineral oil
  • Vegetable oil
  • Biodegradable base oil

Complex calcium sulfonate greases

  • High resistance in moist environment
  • Operating under extreme low-temperature conditions
  • No GHS classification required



  • Photoresist polymers and monomers
  • Antireflective coating polymers
  • Topcoat polymers
  • Advanced lithography molecules

Organic and Printed Electronics

  • Active layer semiconductors
  • Transport layer polymers
  • Electrode materials
  • Substrate materials

Our locations

Address PCAS, 70 Allée Graham Bell
30000 Nîmes
Phone +33 4 66 70 64 64
Market Pharmaceutical, Specialty Ingredients & Cosmetics
More information

Surface: 1, 000 m²

Lab surface: 500 m²


  • 1 kilo-lab in fermentation (80 L total capacity)
  • Robotic platform for highthroughput screening (HTS)
  • Analytical platform for chromatography (GC, GC-MS, U-HPLC)

Flagship technologies: 

  • Protein engineering
  • Microbiology aerobic & anaerobic
  • Syngas fermentation
  • Enzymes & strains fermentation
  • Biochemistry
  • Biocatalysis
  • Design of experiments (DoE)
  • Data mining

Number of scientists: 19

EcoVadis CSR Rating: Silver Certification


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


  • 6 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
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)


Address PCAS, 725 rue Trotter
QC J3B8J8Saint-Jean-sur-Richelieu
Business Line Electronics
Phone +1 450 348 09 01
Market Specialty Ingredients
More information

Surface: 15, 500 m²

Lab surface: 200 m²

Flagship technologies: 

  • Monomers and polymers Heterocycles
  • Polyphenol and azo dyes (with a low metal content)
  • Photo-active compounds (PAC) / photo-active generators (PAG)
  • Cyanine-based dyes
  • NOVOLAK and phenolic resins
  • Silicon chemistry (polysiloxane)
  • Anthracene derivatives (microelectronic grade)

Last inspections: ISO 9001 February 2019


Number of scientists: 8