What WeylChem does

WeylChem Group of Companies is the fine and specialty chemicals platform of International Chemical Investors Group (ICIG), a Swiss-based industrial holding company. Founded in 2005 and headquartered in Frankfurt, Germany, WeylChem operates nine companies across Germany, France, Spain, the United States, and India, employing approximately 1,400 people and generating around €430 million in annual revenue (2024). The group serves pharmaceutical, agrochemical, electronics, coatings, photovoltaic, and oil & gas industries through a dual model: contract development and manufacturing (CDMO) of complex fine chemicals and direct supply of commercial advanced intermediates.

The CDMO segment delivers custom multi-step synthesis at scales from grams to thousands of tons, with capabilities of up to 10+ reaction steps, drawing on a broad technology portfolio that includes bromination, chlorination, Friedel-Crafts reactions, phosphorus chemistry, metallocene chemistry, hydrogenation, C2 chemistry, Grignard reagents, low-temperature chemistry, and oxidation. The Advanced Intermediates segment supplies catalog products including cyanuric chloride and derivatives (TAICROS®, TAC), Allessan® CAP (propanephosphonic acid anhydride), Phenothiazine prills — for which WeylChem Allessa is the world's largest producer — glyoxal, glyoxylic acid, crotonic acid, methoxyacetic acid, sulfuric acid (350kt/year capacity at WeylChem Bilbao), and a range of Grignard reagents. Manufacturing infrastructure spans more than 200 batch reactors totaling over 2,000 m³ across multi-purpose plants in Europe, North America, and Asia.

WeylChem monetizes through project-based custom manufacturing contracts and multi-year supply agreements with enterprise customers in regulated end markets, supplemented by direct commercial sales of branded intermediates. Distribution is direct from manufacturing sites, supported by regional sales hubs including WeylChem US Inc. in Greensboro, NC. The group holds ISO 9001, ISO 14001, ISO 50001, and ISO 45001 certifications across multiple sites, has earned EcoVadis Gold Status for corporate social responsibility, and continues to expand via ICIG-led acquisitions, most recently Vasant Chemicals in India (March 2024) and the integration of Evonik's Performance Materials Division into the WeylChem Wesseling cyanuric chloride franchise.

Name

WeylChem

Legal name

WeylChem International GmbH

Website

https://weylchem.com

Company type

Private

Founded year

2005

Operating status

Operating

Headcount range

1,001–5,000 employees

Short description

WeylChem Group of Companies is the fine and specialty chemicals platform of ICIG, operating nine manufacturing companies across Europe, North America, and Asia. It provides CDMO custom manufacturing services and advanced intermediates to pharmaceutical, agrochemical, electronics, coatings, solar, and industrial customers.

Ownership category

akta.pro rank

Product category

Specialty Chemicals Manufacturing

NAICS

Pharmaceutical and Medicine Manufacturing (32541), All Other Basic Organic Chemical Manufacturing (325199)

SIC

Medicinal Chemicals & Botanical Products (2833), Industrial Organic Chemicals (2860)

akta.pro primary industry

Small-Molecule API & Intermediates CDMO (HLAGABAA)

akta.pro secondary industry

Small-Molecule API Commercial Manufacturing (HLAGAHAB)

Keywords

• Fine chemicals manufacturing
• Specialty chemicals CDMO
• Advanced intermediates supply
• Custom chemical manufacturing
• Pharmaceutical chemical intermediates

Headquarters

HQ city

Frankfurt

HQ country

Germany

HQ region

Europe

Offices10 records

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

Supply Chain, Operations, Infrastructure, Personnel, Technology or R&D, Marketing or Sales

Revenue model

1. CDMO Custom Manufacturing: Contract development and manufacturing organization providing custom manufacturing services for complex specialty chemicals. Serves pharmaceutical, agrochemical, and other industries with multi-step synthesis capabilities.
2. Advanced Intermediates: Supply of advanced intermediates including cyanuric chloride derivatives, Grignard reagents, glyoxal, phenothiazine, and specialty chemicals. Both catalog products and custom synthesis.

Pricing tiers

Go-to-market motion2 records

Distribution channels1 record

Marketing channels3 records

Core offering

WeylChem is a global fine and specialty chemicals manufacturer operating through two business segments: (1) CDMO custom manufacturing services providing tailored development and large-scale production of complex molecules (up to 10+ step syntheses) for pharmaceutical, agrochemical, electronics, and other specialty industries; and (2) Advanced Intermediates — a commercial catalog of specialty chemicals including Glyoxal, Glyoxylic acid, Crotonic acid, Phenothiazine prills, cyanuric chloride derivatives (TAC, TAICROS®), Grignard reagents, and Allessan® coupling reagents. The company runs nine manufacturing sites across Europe, North America, and Asia.

Product overview

WeylChem operates as a dual business model offering both CDMO (Contract Development and Manufacturing Organization) custom manufacturing services and a commercial Advanced Intermediates product portfolio. The CDMO segment provides tailored development and large-scale production of complex chemicals for pharmaceuticals, agrochemicals, catalysts, cosmetics, electronics, and other specialty industries, featuring capabilities like bromination, Friedel-Crafts reactions, low temperature chemistry, metallocene chemistry, Grignard reagents, hydrogenation, and C2 chemistry. The Advanced Intermediates segment encompasses commercial products including Glyoxal, Glyoxylic acid, Crotonic acid and derivatives, Methoxyacetic acid, Phenothiazine prills, cyanuric chloride derivatives (TAC, TAICROS®), and Grignard reagents. Key product families include the Allessan® coupling reagents for pharmaceutical peptide synthesis, crosslinking additives for rubber and plastics, and specialty chemicals for industrial applications. The company operates nine manufacturing sites across Europe, North America, and Asia with approximately 1,400 employees and EUR 430 million annual sales.

Differentiator

Problem solved

Functional benefit

Brands

• TAICROS®: Triallyl-isocyanurate and trimethylallyl-isocyanurate products used as crosslinking additives for rubber and plastic applications, including EVA encapsulants for solar modules
• TAC
• Allessan® CAP
• Phenothiazine Prills

Products and services

• CDMO Custom Manufacturing Services Contract Development and Manufacturing Organization (CDMO) services providing tailored development and commercial-scale production of complex molecules (up to 10+ step syntheses) for pharmaceutical, agrochemical, electronics, coatings, and other specialty chemical industries.
• Glyoxal Chemical intermediate (CAS 107-22-2, C2H2O2) used in various chemical synthesis applications, including for pharma and specialty industries.
• Glyoxylic acid Chemical intermediate (CAS 298-12-4, C2H2O3) used in C2 organic chemistry applications.
• Oxalic acid dihydrate Chemical compound (CAS 6153-56-6, C2H6O6) produced at the WeylChem Lamotte site in France.
• Sulfuric acid Strong mineral acid (CAS 7664-93-9, H2SO4) produced at WeylChem Bilbao with 350kt annual capacity.
• Oleum Fuming sulfuric acid variant (CAS 8014-95-7, H2S2O7) produced at WeylChem Bilbao.
• Sodium sulphate anhydrous Inorganic salt (CAS 7757-82-6, Na2SO4), a byproduct from sulfuric acid production at WeylChem Bilbao.
• Crotonic acid Organic compound (CAS 3724-65-0, C4H6O2) produced by WeylChem Intermediates for coatings, polymers, and specialty applications.
• Methoxyacetic acid Organic acid (CAS 625-45-6, C3H6O3) used as a specialty intermediate, produced by WeylChem Intermediates.
• Cyanuric Chloride Multifunctional intermediate (CAS 203-614-9, C3N3Cl3) for herbicides, reactive dyes, optical brighteners, and UV-light stabilizers; produced at WeylChem Wesseling.
• TAC (Triallyl cyanurate) Crosslinking additive (CAS 101-37-1) for rubber and plastic applications, including EVA encapsulants for solar modules.
• TAICROS® (Triallyl-isocyanurate) Tri-functional crosslinking additive series (CAS 1025-15-6, C12H15N3O3) for peroxide or electron beam-curing of plastics, rubber, and EVA encapsulants for photovoltaics.
• Hydrochloric acid 15% Dilute hydrochloric acid solution (CAS 231-595-7, HCl) produced as byproduct at WeylChem Wesseling.
• Phenothiazine prills Amine-based radical scavenger (CAS 92-84-2, C12H9NS) used as monomer stabilizer, antioxidant, and pharmaceutical building block; WeylChem Allessa is the world's largest producer.
• Allessan® CAP (Propanephosphonic Acid Anhydride) Coupling and water-removal reagent (CAS 68957-94-8) used for amidations, peptide couplings, esterifications, and heterocyclic synthesis; produced at ISO 9001 certified facility with capacity of several hundred tons per year.
• Grignard Reagents Organomagnesium compounds product line including Vinylmagnesium chloride, Methylmagnesium chloride, i-Propylmagnesium chloride, t-Butylmagnesium chloride, Phenylmagnesium chloride, and n-Butylmagnesium chloride for pharmaceutical and agrochemical synthesis.
• Allessan® SR 3044 Specialty product in the Allessan® product line for chemical synthesis applications.

Quantifiable outcome

• Production volumes from kilograms to thousands of tons per year
• +2 more outcomes

Named customers5 records

Segments5 records

Ideal customer profiles4 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature6 records

Partnerships

Two partnerships are on record, tiered minor and core.

• RelementminorStrategic or Co-development Partner · 21 January 2026Dutch green chemical startup Relement partnered with Weylchem-Allessa GmbH for ton-scale production of Bio MPA (first bio-aromatic compound). Relement secured €5.4 million seed round and partnered with WeylChem for production scale-up.
• Vasant ChemicalscoreOthers · 1 March 2024Vasant Chemicals was acquired by International Chemical Investors Group (ICIG) in March 2024, strengthening WeylChem's global expansion and enhancing specialty chemicals capabilities. Vasant Chemicals operates in Hyderabad and Visakhapatnam, India.

Scale indicators4 records

Recent moves6 records

Expansion highlights6 records

Broad incumbents

• Johnson Matthey: UK-headquartered specialty chemicals and catalysis company with pharmaceutical materials and fine chemicals exposure. Overlaps with WeylChem on advanced intermediates and complex chemistries but operates a much larger, diversified portfolio.
• Evonik Industries: German specialty chemicals major with significant fine chemicals and CDMO operations. Overlaps with WeylChem in advanced intermediates and custom manufacturing but as part of a much larger, diversified portfolio across many chemistries.
• Clariant: Swiss specialty chemicals company whose former specialty fine chemicals business was acquired by ICIG to form WeylChem in 2007. Closely linked historically; Clariant retains adjacent specialty chemicals exposure and competes for similar customers in intermediates.
• BASF: World's largest chemical company with substantial fine chemicals and intermediates production, including pharmaceutical-grade APIs. Competes with WeylChem across multiple product lines but at vastly greater scale and portfolio breadth.

Emerging players

• Laurus Labs: Indian pharma and specialty ingredients CDMO offering custom synthesis and API manufacturing. Emerging peer with overlapping multi-step synthesis capabilities and lower cost base, particularly relevant given WeylChem's Vasant Chemicals India expansion.
• Divis Laboratories: Indian-headquartered pharma API and intermediates manufacturer with cost-competitive custom synthesis capabilities. Increasingly competing with European CDMOs like WeylChem on late-stage commercial intermediates for global pharma customers.

Direct peers

• Siegfried Holding: Swiss-headquartered CDMO focused on small-molecule API intermediates and finished drug substances. Directly comparable business model to WeylChem CDMO, serving similar pharmaceutical customers with comparable multi-step synthesis and regulatory positioning.
• Saltigo (Lanxess): Lanxess subsidiary specializing in custom synthesis and fine chemicals CDMO for agro and pharma end markets. Direct competitor in multi-step hazardous chemistry and registered starting materials, serving overlapping customers.
• Lonza Group: Global leader in small-molecule API and intermediate CDMO services for pharma, with similar multi-step synthesis and hazardous chemistry capabilities at much larger scale. Most direct comparable for WeylChem's pharmaceutical custom-manufacturing business.
• Seqens (PCAS / SK Capital): French-headquartered specialty chemicals manufacturer and CDMO offering custom synthesis, pharmaceutical intermediates, and specialty ingredients. Direct peer in Europe serving pharma, agro, and specialty markets with comparable multi-purpose plant model.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks6 records

Key highlights7 records

Customer concentration

• YouTubeyoutube.com/channel/UCoMGXGFOcyuyRD0gGS1_QTA
• LinkedInlinkedin.com/company/weylchem-group
• Xx.com/weylchem

Compliance17 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles9 records

Subsidiaries9 records

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about WeylChem