Private company

Thermphos International

Logo: Unknown author Unknown author, Public domain, via Wikimedia Commons3

The Thermphos International B.V. was a venture of the chemical industry, which produced phosphorus and inorganic phosphorus compounds. In 2005, it earned about 550 Million Euros and employed about 1200 people. It was Europe's only producer of elemental phosphorus.2 It is headquartered in Vlissingen.1 It is part of Hoechst.1 It ceased to exist in 2012.1 Wikipedia text CC BY-SA 4.0

Last updated Oct 20, 2026.

Overview

  • Industrychemical industry1
  • HeadquartersVlissingen1
  • Websitewww.thermphos.com
  • Legal formbesloten vennootschap1

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The Thermphos International B.V. was a venture of the chemical industry, which produced phosphorus and inorganic phosphorus compounds. In 2005, it earned about 550 Million Euros and employed about 1200 people. It was Europe's only producer of elemental phosphorus. The company was also involved in recycling phosphorus. It used to be a former affiliate of the German chemicals company Hoechst AG and was taken over in 2003 by a group of private investors, led by the Italian-Israeli businessman Nahum Galmor.2

Corporate structure

Thermphos International is part of a group headed by Sanofi. 124 entities, 30 countries on record. Switch between the flow chart and the network, and select any entity to see its details.

  • Sanofi Paris, France
    • Hoechst 100% · Frankfurt am Main, Germany
    • Ablynx Ghent, Belgium
    • Sanofi (Belgium) Machelen, Belgium
    • Chattem Subsidiary · 100% · Chattanooga
    • Genzyme Subsidiary · 100% · Cambridge, Massachusetts, United States
      • GENZYME THERAPEUTIC PRODUCTS LIMITED PARTNERSHIP Subsidiary · Boston, Massachusetts, United States
    • Sanofi-Aventis Korea Subsidiary · 100% · Seoul, South Korea
    • Shantha Biotechnics Subsidiary · 98.7% · Medchal
    • Bioverativ Subsidiary · Waltham
    • Sanofi (Japan) Subsidiary · Tokyo, Japan
    • Sanofi Medley Subsidiary · Campinas, Brazil
    • Winthrop Subsidiary · United Kingdom
    • Zentiva Subsidiary · Praha 10, Czechia
    • Infraserv Höchst Stake · 31.2% · Frankfurt am Main, Germany
    • Regeneron Pharmaceuticals Stake · 22.2% · Tarrytown, New York, United States
      • Checkmate Pharmaceuticals, Inc. Subsidiary · Delaware, United States
      • Decibel Therapeutics, Inc. Subsidiary · Delaware, United States
      • Eastside Campus Holdings LLC Subsidiary · New York, United States
      • Loop Road Holdings LLC Subsidiary · New York, United States
      • Old Saw Mill Holdings LLC Subsidiary · New York, United States
      • Oxular Acquisitions Limited Subsidiary · United Kingdom
      • Oxular Inc. Subsidiary · Delaware, United States
      • Regeneron Assurance, Inc. Subsidiary · New York, United States
      • Regeneron Austria GmbH Subsidiary · Austria
      • Regeneron Belgium SRL Subsidiary · Belgium
      • Regeneron Canada Company Subsidiary · Canada
      • Regeneron Clinical Genomics Laboratory LLC Subsidiary · Delaware, United States
      • Regeneron France SAS Subsidiary · France
      • Regeneron Genetics Center LLC Subsidiary · Delaware, United States
      • Regeneron GmbH Subsidiary · Germany
      • Regeneron Healthcare Solutions, Inc. Subsidiary · New York, United States
      • Regeneron India Private Limited Subsidiary · India
      • Regeneron International Holdings LLC Subsidiary · Delaware, United States
      • REGENERON IRELAND DESIGNATED ACTIVITY COMPANY Subsidiary · Dublin, Ireland
      • Regeneron Italy S.r.l. Subsidiary · Italy
      • Regeneron Japan KK Subsidiary · Japan
      • Regeneron NL B.V. Subsidiary · Netherlands
      • Regeneron Spain, S.L.U. Subsidiary · Spain
      • Regeneron Switzerland GmbH Subsidiary · Switzerland
      • Regeneron UK Limited Subsidiary · United Kingdom
      • and 4 more
    • SANOFI AVENTIS SA Subsidiary · 100% · Barcelona, Spain
    • SANOFI PASTEUR SA DE CV Subsidiary · 100% · Mexico City, Mexico
    • AZTECA VACUNAS SA DE CV Subsidiary · Mexico City, Mexico
    • Carraig Insurance Designated Activity Company Subsidiary · Dublin, Ireland
    • CHINOIN GYÓGYSZER-ÉS VEGYÉSZETI TERMÉKEK GYÁRA ZÁRTKÖRŰEN MŰKÖDŐ RT. Subsidiary · Budapest, Hungary
      • SANOFI-AVENTIS MAGYARORSZÁG KERESKEDELMI ÉS SZOLGÁLTATÓ ZÁRTKÖRŰEN MŰKÖDŐ RÉSZVÉNYTÁRSASÁG Subsidiary · Budapest, Hungary
    • GENZYME FLANDERS Subsidiary · Geel, Belgium
    • Genzyme Global S.a r.l. (Genzyme Global S.à r.l.) Subsidiary · Baar, Switzerland
    • HELVEPHARM AG Subsidiary · Vernier, Switzerland
    • Life Science Holdings Inc. Subsidiary · Swiftwater, Pennsylvania, United States
    • Nattermann Verwaltungs GmbH Subsidiary · Frankfurt am Main, Germany
    • Opella Subsidiary · France
    • and 39 more

Built from parent and subsidiary links from GLEIF, the Global Legal Entity Identifier Foundation (CC0); subsidiaries listed in Exhibit 21 of annual reports filed with the SEC; subsidiaries, stakes and holdings from Wikidata (CC0). Each entity in the chart links to its source.

Products and brands

Thermphos products center around phosphorus and phosphates. This ranges from elemental phosphorus to base chemicals of phosphate chemistry, such as phosphoric Acid and polyphosphoric acid, phosphorus trichloride, phosphorus oxychloride, phosphorus pentachloride, phosphorus pentoxide, phosphorus pentasulfide, aluminium phosphate, calcium phosphate, ammonium phosphate, potassium phosphate, and sodium phosphate, as well as other additives for plastics and ceramics as well as food industries. Phosphorus is one of the three main nutrients present in fertilizer.

From Wikipedia’s article on Thermphos International, shared under CC BY-SA 4.0.4

Subsidiaries and ownership

Parent company

Subsidiaries

From Wikidata.1

Timeline

  1. 2012Dissolved Dissolved1

Sources

The numbers on this page point here. Each one links to the record it came from.

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