What Ecovyst does

Ecovyst Inc. (NYSE: ECVT) is a US-domiciled specialty inorganic chemicals company built around sulfur-based chemistry. Following the January 2026 divestiture of its Advanced Materials & Catalysts segment to Technip Energies and the June 2026 acquisition of Calabrian from INEOS Enterprises, Ecovyst operates as a focused three-brand platform: Ecoservices (sulfuric acid regeneration and virgin sulfuric acid production), Chem32 (THIOCAT® fixed-bed catalyst sulfiding and toll manufacturing), and Calabrian (sulfur dioxide and derivatives including sodium bisulfite, sodium thiosulfate, and sodium meta bisulfite via the proprietary SO2Clean® process). The technical backbone is a 130+ year sulfur-handling heritage, proprietary regeneration and sulfiding technologies, eight sulfuric acid regeneration units, nine virgin acid production facilities, and a 50/50 Zeolyst International joint venture with Shell Catalysts & Technologies for zeolite catalysts. Regeneration volumes reached 1.4 million metric tonnes of recycled spent acid in 2024, avoiding 4.4 million barrels of disposal, while turbine generators co-produced 123,362 MWh of electricity.

The business model is industrial B2B, serving North American refiners, mining operators (copper, lithium, boron), polyethylene producers, renewable diesel and SAF producers, water-treatment authorities, and battery manufacturers. Revenue is generated through (i) recurring, contract-based sulfuric acid regeneration services to refiners, (ii) one-time/spot sales of virgin sulfuric acid in multiple grades (93%, 98%, oleum, 70%, 78%) delivered via rail, truck, and barge, (iii) professional-services-style toll manufacturing and catalyst sulfiding at Chem32's Orange, Texas facility, and (iv) direct sales of SO2 and derivatives from Calabrian. Pricing is quote-based and not publicly disclosed. Distribution is exclusively direct sales to enterprise accounts, supported by technical service, sustainability credentials (RC14001, ISO 9001/14001, EcoVadis Silver at 93rd percentile), and multi-site manufacturing redundancy.

FY2025 revenue was $723.5M (+20.9% YoY) with FY2024 adjusted EBITDA of $238.2M. Q2 2026 sales of $250M grew 42% YoY, and FY2026 guidance has been raised to $1.02–1.06B in revenue and $195–207M in adjusted EBITDA. The Calabrian acquisition added $10–12M of expected H2 2026 EBITDA contribution, while the Technip divestiture ($556M gross / ~$530M net) was used to pay down $465M of term loan, leaving net debt leverage at 1.2x.

Name

Ecovyst

Legal name

Ecovyst Inc.

Website

https://ecovyst.com

Company type

Public

Founded year

2021

Operating status

Operating

Headcount range

501–1,000 employees

Short description

Ecovyst is a US-based specialty inorganic chemicals company that supplies sulfuric acid regeneration, virgin sulfuric acid, sulfur dioxide derivatives, and catalyst sulfiding services to refiners, miners, polyolefin producers, and water-treatment operators across North America.

Ownership category

akta.pro rank

Product category

Specialty Inorganic Chemicals

NAICS

Other Basic Inorganic Chemical Manufacturing (325180)

SIC

Industrial Inorganic Chemicals (2810)

akta.pro primary industry

Hazardous Waste Recycling & Recovery (Solvent Recovery, Oil Re-refining, Metals Recovery) (EUAIAFAI)

akta.pro secondary industries

Catalyst Recovery, Regeneration & Reclamation Services (IMAEAIAM), Solvent Recovery & Recycling Services (BPALAHAC)

Keywords

• Sulfuric acid regeneration
• Specialty inorganic chemicals
• Catalyst sulfiding services
• Sulfur dioxide derivatives
• Virgin sulfuric acid

Headquarters

HQ city

Malvern

HQ country

United States

HQ region

North America

Offices14 records

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

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

Revenue model

1. Sulfuric Acid Regeneration Services: End-to-end regeneration services for recycling spent sulfuric acid from refineries for alkylate production. This is a recurring service model with established long-term customer relationships in North American refining industry.
2. Virgin Sulfuric Acid Sales: Production and sale of specialty grade high-purity virgin sulfuric acid for mining, lead acid batteries, water treatment, petrochemical processes, and industrial applications. Products include 93% Sulfuric Acid, 93% Lead Acid Battery Grade, 98% Sulfuric Acid, Oleum, 70% and 78% Sulfuric Acid.
3. Calabrian Sulfur Dioxide and Derivatives: Production and sale of sulfur dioxide, sodium bisulfite, sodium thiosulfate, and sodium meta bisulfite for water treatment, mining, energy, and specialty applications. Immediately accretive acquisition expected to contribute $10-12 million in adjusted EBITDA during second half of 2026.
4. Chem32 Catalyst Sulfiding Services: THIOCAT® fixed-bed sulfiding technology services including toll manufacturing, logistics and warehousing, pilot studies, analytical testing, and custom processing. Lot sizes from 4,000 to 1,000,000 lbs with ISO 9001:2015 quality certification.
5. Chemical Waste Treatment Services: Chemical waste handling and treatment services from four facilities accommodating sulfur-containing wastes, acid wastes, chlorinated wastes, and aqueous mixtures. Storage facilities totaling over 800,000 gallons.

Go-to-market motion2 records

Distribution channels5 records

Marketing channels6 records

Core offering

Ecovyst is a worldwide producer of specialty inorganic performance chemicals and catalysts, primarily focused on sulfur-based chemistry. The company's core offering includes sulfuric acid regeneration services for refineries, virgin sulfuric acid production in multiple grades for mining and industrial applications, chemical waste handling and treatment services, catalyst sulfiding and activation services via proprietary THIOCAT® technology, and sulfur dioxide and derivative products through its Calabrian business.

Product overview

Ecovyst is a specialty chemicals company offering a portfolio of sulfur-based products and services organized around two core segments: Ecoservices and Catalyst Technologies. Ecoservices provides sulfuric acid regeneration (recycling spent acid for refinery alkylate production), virgin sulfuric acid production (in various concentrations including 93%, 98%, oleum, 70%, and 78%), and treatment services for chemical waste handling. The Calabrian business unit (acquired in 2026) produces sulfur dioxide and derivatives including sodium bisulfite, sodium thiosulfate, and sodium meta bisulfite using proprietary SO₂Clean® technology. Chem32 provides catalyst sulfiding and activation services via its proprietary THIOCAT® fixed-bed technology. The Catalyst Technologies segment, including the Zeolyst International joint venture, offers zeolite products under the Opal brand family (Opal Renew™, Opal Infinity™, Opal Pure™, Opal Blue™) for renewable fuels, chemical recycling, emission control, and water treatment. Ecovyst also produces silica-based catalyst products under the Alpha brand (AlphaPol™, AlphaCat®, AlphaSelect®, AlphaBloc™) for polyethylene and other industrial applications.

Differentiator

Problem solved

Functional benefit

Brands

• SO₂Clean: Proprietary sulfur dioxide production technology that minimizes emissions, wastewater, and by-products compared with competing technologies.
• THIOCAT
• Opal Renew
• Opal Infinity
• Opal Pure
• Opal Blue
• AlphaPol
• AlphaCat
• AlphaSelect
• AlphaBloc

Products and services

• Sulfuric Acid Regeneration End-to-end sulfuric acid regeneration services for oil refiners. Spent sulfuric acid from alkylation processes is incinerated, purified, and reconstituted to support alkylate production for gasoline blending. Ecovyst operates 8 regeneration units across North America providing reliable spent acid recycling services.
• Virgin Sulfuric Acid High-purity specialty grade virgin sulfuric acid produced by burning molten sulfur. Products include 93% Sulfuric Acid, 93% Lead Acid Battery Grade, 98% Sulfuric Acid, Oleum, 70% and 78% Sulfuric Acid for mining (copper for electronics and lithium for batteries), lead acid battery production, water treatment, and agricultural applications.
• Treatment Services Chemical waste handling and treatment services accommodating sulfur-containing wastes, acid wastes, chlorinated wastes, and aqueous mixtures from industrial sources. Operations from four facilities with storage capacity totaling over 800,000 gallons with rail car and tanker delivery capability.
• Chem32 Sulfiding and Activation Services Sulfiding and activation services for refinery and petrochemical catalysts using proprietary THIOCAT® fixed-bed sulfiding technology. Provides toll manufacturing, logistics, warehousing, pilot studies, analytical testing, and custom processing. Lot sizes from 4,000 to 1,000,000 lbs with ISO 9001:2015 certification at the Orange, Texas facility.
• Calabrian Sulfur Dioxide and Derivatives Production and sale of sulfur dioxide, sodium bisulfite, sodium thiosulfate, and sodium meta bisulfite for water treatment, mining, energy, and specialty applications. Uses proprietary SO₂Clean® technology with exceptional consistency while minimizing emissions, wastewater, and by-products.
• Sodium Bisulfite Derivative of concentrated sulfuric acid used in municipal water treatment, food additives, and oxygen scavenging applications.
• Aluminum Sulfate Concentrated sulfuric acid derivative used in pulp/paper, water treatment, and dye production applications. Meets AWWA B403-09 standards and NSF/ANSI 60 certified for drinking water treatment chemicals.
• Oleum Sulfuric acid saturated with sulfur trioxide (fuming sulfuric acid) used as a chemical intermediate in sulfonating and nitrating reactions.

Quantifiable outcome

• 4.4 million barrels per year of landfill or deep well disposal avoided through spent sulfuric acid recycling
• +5 more outcomes

Named customers8 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

Five partnerships are on record, tiered acquisition, major divestiture and core.

• INEOS EnterprisesacquisitionOthers · 30 June 2026Ecovyst completed acquisition of Calabrian's sulfur dioxide and related derivatives business from INEOS Enterprises on June 30, 2026. Immediately accretive acquisition expected to contribute $10-12 million in adjusted EBITDA during second half of 2026. Management targeting $3-4 million in cost and revenue synergies.
• Technip Energies N.V.major divestitureOthers · 2 January 2026Ecovyst completed sale of its Advanced Materials & Catalysts segment to Technip Energies for $556 million (net proceeds approximately $530 million after taxes and expenses). The deal includes specialty catalysts and advanced materials platform with 330 employees across three facilities in the U.S. and Europe. Expected to be immediately accretive to Technip Energies' earnings and cash flow, adding over 40 years of expertise in advanced silicas and zeolite-based catalysts.
• Cornerstone Chemical CompanyacquisitionOthers · 1 May 2025In May 2025, Ecovyst completed acquisition of sulfuric acid production assets in Waggaman, Louisiana from Cornerstone Chemical Company, strengthening its North American supply capabilities.
• Enzyme Supplies LtdcoreStrategic or Co-development Partner · 26 March 2025Memorandum of Understanding signed to partner on accelerating commercialization of enzyme immobilization technologies for industrial biocatalysts. Collaboration combines Ecovyst's silica-based advanced materials and functionalized silicas with Enzyme Supplies' enzyme development capabilities for applications in biofuels, agriculture, food processing, and other industrial sectors. Both companies aim to develop novel biocatalyst solutions that improve process efficiencies and sustainability compared to traditional liquid-based enzyme systems.
• Shell Catalysts & TechnologiescoreStrategic or Co-development Partner50/50 joint venture partner in Zeolyst International, a leading producer of zeolites used to manufacture catalysts for petrochemical refining, sustainable fuel production, emission control systems, and plastic circularity. Zeolyst has a four-decade legacy in zeolite development and manufacturing with product brands including Opal Renew, Opal Infinity, Opal Pure, and Opal Blue.

Scale indicators22 records

Recent moves8 records

Expansion highlights6 records

Broad incumbents

• BASF: Global specialty and commodity chemicals leader with significant sulfuric acid production and broad inorganic chemicals portfolio. Comparable as a large-scale producer serving refining, mining, and industrial customers across multiple geographies.
• INEOS: Major global chemicals producer that previously owned the Calabrian sulfur dioxide and derivatives business divested to Ecovyst in June 2026. Closely comparable in sulfur chemistry and specialty inorganic chemicals.
• Honeywell UOP: Leading refinery catalysts and process technology provider serving petrochemical and refining customers globally. Comparable in catalyst sulfiding/activation services and refinery customer relationships.
• DuPont: Diversified specialty chemicals company with comparable industrial inorganic and performance chemicals portfolio. Similar enterprise B2B sales model serving electronics, automotive, and industrial customers.
• Solvay: Former corporate parent of Ecoservices prior to the 2015 PQ Corp combination. Specialty chemicals producer with overlapping inorganic and performance chemistry capabilities.
• Cabot Corporation: Specialty chemicals producer of performance materials and chemicals serving industrial customers. Comparable in specialty inorganic chemistry business model and B2B industrial go-to-market.
• Albemarle: Specialty chemicals company with leading position in lithium and bromine serving energy storage and industrial markets. Comparable as a specialty inorganic chemicals company tied to the EV/battery supply chain.

Direct peers

• Chemtrade Logistics: North American producer of sulfuric acid and other industrial chemicals with significant regeneration services exposure. Directly comparable business model serving refining, water treatment, and mining customers.
• PVS Chemicals: North American specialty chemicals company focused on sulfuric acid, water treatment chemicals, and industrial acid distribution. Direct competitor in sulfuric acid regeneration and virgin acid supply.

Emerging players

• Stepan Company: Specialty chemicals manufacturer serving personal care, cleaning, and industrial markets. Comparable as a mid-cap specialty inorganic/organic chemicals producer with similar B2B industrial sales model.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks6 records

Key highlights7 records

Customer concentration

• LinkedInlinkedin.com/company/pq-corporation
• Facebookfacebook.com/313755128651698

Compliance9 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles7 records

Subsidiaries4 records

Funding overview

Funding rounds2 records

Investors

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

M&A3 records

Investments1 record

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

Frequently asked questions about Ecovyst