Hazardous Raw Materials: Transforming Complex Chemistry into Industrial Success

Enabling projects others cannot industrialize

In the specialty chemicals industry, some of the most innovative molecules rely on raw materials that are difficult, hazardous, or highly regulated to handle. For companies developing new products, the challenge is often not the chemistry itself but finding a manufacturing partner capable of safely managing reactive, corrosive, toxic, or flammable substances at scale.

At SEQENS, the ability to handle hazardous materials is more than a manufacturing capability. It is a core expertise that helps customers accelerate development, reduce industrialization risks, and secure reliable supply chains for complex chemical processes.

Many organizations encounter obstacles when moving from laboratory development to commercial production. Processes involving toxic gases, corrosive reagents, highly reactive intermediates, or demanding purification requirements often exceed the capabilities of conventional manufacturing facilities. Successfully bringing these projects to market requires not only specialized infrastructure, but also deep expertise in process safety, scale-up, analytical sciences, and environmental protection.

Specialized infrastructure for demanding chemistries

Across our manufacturing network in France and the United Kingdom, SEQENS has built extensive capabilities to support challenging chemical processes involving hazardous materials.

Our UK facilities in Middlesbrough and Billingham, operating under COMAH Tier 1 regulations, are equipped to manage materials such as methyl chloride, epichlorohydrin, hydrogen peroxide, flammable solvents, alpha olefins, and organic acids. These capabilities support the manufacture of specialty chemicals including quaternary ammonium compounds, epoxides, amines, polymers, and esters.

A particular strength of these sites lies in large-scale purification. Advanced distillation systems featuring up to 45 theoretical plates enable the production of highly purified liquid products ranging from hundreds to thousands of tonnes annually. Integrated tanker handling, drumming, and packaging capabilities further enhance operational flexibility and supply security.

Expertise in highly reactive and corrosive materials

For customers facing some of the industry’s most complex chemical challenges, our French sites provide access to specialized expertise and infrastructure.

The Bourgoin and Couterne facilities routinely handle reagents such as chlorine, boron trifluoride, trimethyl phosphite, phosphorus chlorides, phosphorus pentasulfide, hydrogen sulfide, aluminium chloride, thionyl chloride, hydrogen chloride, and carbon dioxide. These materials are essential building blocks for many high-value specialty chemicals but require rigorous controls to ensure safe operation and environmental protection.

To support these processes, the sites are equipped with dedicated scrubbing systems, advanced containment technologies, and specialized treatment solutions including an incineration unit at Couterne. Operating conditions can be maintained across a wide temperature range from -80°C to +200°C, offering exceptional flexibility for sensitive reactions. Specialized materials of construction such as Hastelloy and Uranus alloys further ensure the reliability and durability of equipment exposed to highly corrosive environments.

From laboratory development to commercial scale

Beyond handling hazardous substances safely, customers need confidence that their process can be successfully transferred from development to production scale.

SEQENS supports this journey through dedicated scale-up capabilities designed to bridge laboratory innovation and industrial manufacturing. Pilot-scale pressure reactors enable the evaluation of reactions such as hydrogenations and methyl chloride chemistry under representative operating conditions. High-efficiency distillation systems support purification development, while a broad range of batch reactors, flow chemistry equipment, and clean-room facilities provide flexibility for both liquid and solid processing.

Using process simulation tools such as ChemCAD, our teams can model and optimize manufacturing routes before large-scale implementation. This approach helps identify potential bottlenecks early, reduce development timelines, and improve process robustness.

Understanding and Managing Process Risks

When hazardous materials are involved, process safety is inseparable from successful industrialization.

SEQENS combines scientific expertise and advanced testing capabilities to understand the thermal and reactive behavior of chemical processes before they are scaled up. Reaction calorimetry, thermal stability analysis, decomposition studies, pseudo-adiabatic testing, and isothermal calorimetry are routinely used to define safe operating parameters and identify potential risks.

This comprehensive approach allows our teams to design manufacturing processes that meet the highest standards of safety, reliability, and regulatory compliance while providing customers with the confidence needed to move toward commercial production.

Analytical excellence supporting every stage of development

Complex chemistry requires precise analytical control from early development through commercial manufacturing. SEQENS benefits from a comprehensive analytical platform incorporating high-resolution mass spectrometry, LC-MS/MS, GC-MS/MS, NMR spectroscopy, X-ray powder diffraction, particle characterization technologies, thermal analysis, electron microscopy, and elemental analysis. These capabilities provide detailed insight into product quality, impurity profiles, process performance, and material properties, enabling faster development and more reliable manufacturing outcomes.

A trusted partner for complex chemical challenges

The combination of specialized infrastructure, hazardous materials expertise, process safety know-how, scale-up capabilities, and advanced analytical support enables SEQENS to perform a broad range of complex chemical transformations, including alkylation, Arbusov reactions, Diels-Alder chemistry, epoxidation, esterification, Friedel-Crafts reactions, halogenation, polymerization, sulfurization, and Williamson reactions. For customers developing innovative molecules or seeking to industrialize challenging chemistries, hazardous materials should not be a barrier to progress. At SEQENS, they are an area of expertise. By transforming technical complexity into safe, robust, and scalable manufacturing solutions, we help our customers bring their most demanding projects to market with confidence.