What William Blythe does

William Blythe is a UK-based specialty inorganic chemicals manufacturer founded in 1845, operating from Accrington, Lancashire with a registered office in Harlow, Essex. The company develops and manufactures high-performance inorganic chemicals based on copper, tin, and iodine chemistry, serving polymer, pharmaceutical, electronics, printing, energy, food & feed, pigments, metal plating, catalyst, and gas processing markets across more than 40 countries. Core technology platforms are proprietary precipitation (including Bi-Tri Metallic Precipitation), redox chemistry (handling iodine from 1- to 7+ oxidation states), and hydrothermal synthesis, with capability to scale products from gram to multi-tonne quantities. Key product franchises include the Flamtard zinc-stannate-based flame retardant synergists (H, S, X, X101), DURAGUARD fixed-bed gas purification absorbents (S100, S200, M100), GOgraphene graphene oxide dispersions/pastes/powders scaled to 50 tonnes/year, Luxacal doped-tungsten oxide NIR absorbers, and patented LLZO solid-state battery materials.

The company operates a B2B sales-led go-to-market model, with regional business managers covering EMEA, Americas, and Asia-Pacific, complemented by distribution partners (e.g., Keyser & Mackay for EMEA), industry event participation (CPHI Europe, Chemspec, K Show, Vinyltec, Techtextil), and the GOgraphene e-commerce webshop for small-quantity graphene oxide purchases. Pricing is quote-based and undisclosed, with multi-year contracts typical for specialty products. Revenue is not publicly disclosed. The company holds a portfolio of regulatory certifications (ISO 9001/14001/50001, HACCP, COMAH, OEKO-TEX, GAIN, Ecovadis Silver) that are critical for serving food, pharma, textile, and electronics customers. In May 2025, the William Blythe board completed a management buyout with H2 Equity Partners to repurchase the company from FTSE 250-listed Synthomer PLC, with the existing leadership team continuing to run the independent business under PE ownership aimed at facility, capability, and brand investment.

Name

William Blythe

Legal name

William Blythe Limited

Website

https://williamblythe.com

Company type

Private

Founded year

1845

Operating status

Operating

Headcount range

101–250 employees

Short description

William Blythe is a UK-based specialty inorganic chemicals manufacturer producing copper-, tin-, and iodine-based high-purity compounds, flame retardants, gas purification absorbents, graphene oxide, and solid-state battery materials for global polymer, pharmaceutical, electronics, energy, and food markets.

Ownership category

akta.pro rank

Product category

Specialty Inorganic Chemicals

NAICS

Other Basic Inorganic Chemical Manufacturing (325180), Chemical Manufacturing (325)

SIC

Industrial Inorganic Chemicals (2810), Miscellaneous Chemical Products (2890)

akta.pro primary industry

Electronic & High-Purity Specialty Chemicals (IMAEABAD)

akta.pro secondary industry

Wet Process Chemicals (Etchants/Cleaners/Strippers/SC-1/SC-2/BOE) (HDAHAGAF)

Keywords

• Specialty inorganic chemicals
• Flame retardant synergists
• Gas purification absorbents
• Iodine compounds
• Graphene oxide materials

Headquarters

HQ city

Accrington

HQ country

United Kingdom

HQ region

Europe

Offices2 records

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

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

Revenue model

1. Specialty Inorganic Chemical Products: B2B manufacturing and supply of high-performance inorganic chemicals including copper, tin, and iodine compounds. Products sold directly to customers in polymer, pharmaceutical, electronics, and energy markets globally. Revenue generated through product sales with both standard and custom product offerings.

Pricing tiers

Go-to-market motion1 record

Distribution channels3 records

Marketing channels4 records

Core offering

William Blythe is a UK-based specialty inorganic chemicals manufacturer founded in 1845, producing high-performance chemicals based on copper, tin, and iodine chemistry. The company manufactures and globally supplies differentiated technical products including potassium iodide and iodate, copper and tin compounds, graphene oxide, antimony-free flame retardant synergists (Flamtard brand), gas purification absorbents (DURAGUARD brand), and advanced materials for solid-state batteries and perovskite solar cells to polymer, pharmaceutical, electronics, energy, and industrial markets.

Product overview

William Blythe is a specialty inorganic chemicals company manufacturing high-performance chemicals based on copper, tin, and iodine. The portfolio includes core chemical products (Potassium Iodide, Potassium Iodate, Copper Iodide, Tin Monoxide, Tin Dichloride, Periodic Acid, Sodium Periodate, Potassium Periodate), advanced materials (Graphene Oxide, Lead Iodide for perovskite solar cells, LLZO for solid-state batteries, Luxacal near-infrared absorbers), flame retardant synergists under the Flamtard brand (H, S, X series), gas purification absorbents under the DURAGUARD brand (S100, S200, M100), and Magnesium Nitrate. Products serve polymer, pharmaceutical, electronics, printing, energy, food & feed, and industrial markets globally. Small quantities of graphene oxide are sold through the GOgraphene webshop.

Differentiator

Problem solved

Functional benefit

Brands

• FLAMTARD: Antimony-free flame retardant synergists for polymers, including Flamtard H (zinc hydroxystannate), Flamtard S (zinc stannate), and Flamtard X products.
• DURAGUARD
• GOgraphene
• Luxacal

Products and services

• Graphene Oxide High-quality graphene oxide supplied as dispersion in water and high concentration paste or powder for polymer, construction, catalyst, coating and medical industries.
• Potassium Iodate High-quality potassium iodate meeting Food Chemicals Codex requirements. Used as iodine supplement, selective oxidising agent, and in manufacture of light polarisation filters. White crystalline solid.
• Potassium Iodide
• Copper Iodide
• Tin Monoxide
• Tin Dichloride
• Periodic Acid
• Sodium Periodate
• Potassium Periodate
• Lead Iodide
• Luxacal (Doped Tungsten Oxide)
• LLZO (Lithium Lanthanum Zirconium Oxide) Proprietary precipitation process for garnet-type doped LLZO materials for solid-state battery technology, scalable to kilo-tonne quantities. Fine white powder.
• DURAGUARD S100 Fixed bed gas absorbent for hydrogen sulfide (H2S) removal in gas processing plants, optimised for high capacity with enhanced porosity and durability.
• DURAGUARD S200
• DURAGUARD M100
• Flamtard H (Zinc Hydroxystannate)
• Flamtard S (Zinc Stannate)
• Flamtard X
• Flamtard X101 Low-cost replacement for antimony trioxide (ATO) as flame retardant additive in PVC polymer compounds, based on zinc stannate chemistry.
• Magnesium Nitrate
• GOgraphene Webshop

Quantifiable outcome

• Graphene oxide production capacity: 50 tonnes/year of high purity dispersion
• +1 more outcomes

Named customers3 records

Segments6 records

Ideal customer profiles6 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature5 records

Partnerships

Four partnerships are on record, tiered core and strategic.

• Graphene CompositescoreStrategic or Co-development Partner · 10 October 2022William Blythe supplies graphene oxide for Graphene Composites' GC Halo air filter coating product that destroys pathogens including SARS-CoV-2 coronavirus. The partnership leverages William Blythe's 50-tonne capacity graphene oxide production.
• Keyser & MackaycoreChannel Partner/ Reseller/ DistributorKeyser & Mackay serves as regional distribution partner for William Blythe's Flamtard product range in EMEA markets, co-exhibiting at events like Plastics and Rubber 2025 in Barcelona.
• National Graphene InstitutestrategicStrategic or Co-development PartnerResearch collaboration on graphene oxide material properties and next-generation technologies including lithium-ion batteries and water filtration applications.
• University of Manchester - Electrochemistry Research GroupstrategicStrategic or Co-development PartnerResearch collaboration with Prof. Robert Dryfe on development of novel high capacity graphene-related materials for electric vehicle battery applications, resulting in published research article in ChemSusChem.

Scale indicators3 records

Recent moves6 records

Expansion highlights5 records

Direct peers

• Italmatch Chemicals: Global specialty chemicals group with a leading position in flame retardants (including antimony-free and phosphorus-based chemistries), performance additives and water treatment. Directly comparable to William Blythe's Flamtard flame retardant synergist franchise and overlapping iodine/tin chemistry know-how.
• Iofina: Specialty iodine producer and iodine derivatives manufacturer serving pharmaceutical, food and industrial markets. Closest direct comparable to William Blythe's iodine chemistry platform (potassium iodate, potassium iodide, copper iodide, periodates).

Broad incumbents

• Clariant: Large Swiss specialty chemicals company with broad flame retardant, high-purity and electronic materials portfolios. Overlaps with William Blythe across polymer additives, electronics chemicals and high-purity reagents, though Clariant operates at materially larger scale across many end markets.
• PMC Group: Diversified specialty chemicals manufacturer with positions in flame retardants, polymer additives, and high-purity inorganic intermediates. Comparable to William Blythe's specialty additives business and overlap on tin/zinc-based flame retardant chemistry.
• Israel Chemicals (ICL Group): Global specialty minerals and chemicals group with flame retardant (FR-245, brominated and antimony-based alternatives), bromine and specialty phosphate businesses. A key incumbent competing against William Blythe's Flamtard antimony-free offering.
• Johnson Matthey: UK-headquartered specialty chemicals and advanced materials company with deep capabilities in precious metals, catalysts, battery materials and high-purity inorganic chemicals. Closest UK-located large peer to William Blythe and shares overlap in catalyst, gas processing and battery materials end markets.
• Honeywell UOP: Global licensor and supplier of gas processing technologies, adsorbents and catalysts for sulfur and mercury removal in natural gas and hydrocarbon streams. Comparable to William Blythe's DURAGUARD fixed-bed absorbents for H2S and mercury removal in gas processing.

Emerging players

• NEI Corporation: US-based specialty materials company developing cathode, anode and solid-state electrolyte materials (including LLZO-type garnets) for lithium-ion and next-generation batteries. Direct comparable to William Blythe's patented LLZO solid-state battery material.
• Graphenea: Spain-based graphene materials supplier offering graphene oxide, dispersions and powders to R&D and industrial customers. Comparable to William Blythe's GOgraphene product family in both product offering and customer segment overlap.
• Targray: Specialty materials supplier to lithium-ion battery, solar and hydrogen markets, including solid-state electrolyte precursors. Adjacent comparable to William Blythe's LLZO and lead iodide perovskite precursor businesses serving emerging energy storage customers.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks6 records

Key highlights7 records

Customer concentration

• LinkedInlinkedin.com/company/william-blythe
• Xx.com/1williamblythe

Compliance11 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles7 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 William Blythe