Private company

ACNA

Italian chemical company

National Dyes Company and Affiliates (Italian: Azienda Coloranti Nazionali e Affini), more commonly known as the ACNA, was the first Italian chemical company, active from 1929 to 1999 in Cengio (main plant), as well as in Cesano Maderno and Rho, although it traces back to 1882 under different names. The company was best known for the pollution of land and waters related to its production of dyes earning it the nickname of "the poison factory" which would see it brought before the Italian government.2 It was founded by Italgas.1 It is part of IG Farben.1 Wikipedia text CC BY-SA 4.0

Last updated Oct 20, 2026.

Overview

1929Founded1
  • IndustryWholesale of chemical products, chemical industry, manufacture of other chemical products, manufacture of paints, varnishes and similar coatings, printing ink a mastics, wholesale1
  • HeadquartersCengio1
  • Founded inSaliceto1

National Dyes Company and Affiliates (Italian: Azienda Coloranti Nazionali e Affini), more commonly known as the ACNA, was the first Italian chemical company, active from 1929 to 1999 in Cengio (main plant), as well as in Cesano Maderno and Rho, although it traces back to 1882 under different names. The company was best known for the pollution of land and waters related to its production of dyes earning it the nickname of "the poison factory" which would see it brought before the Italian government.2

Corporate structure

ACNA is part of a group headed by IG Farben. 384 entities, 54 countries on record. Switch between the flow chart and the network, and select any entity to see its details.

  • IG Farben Frankfurt am Main
    • ACNA Cengio
    • Agfa Camerawerk Subsidiary · Munich
    • Agfa-Gevaert Subsidiary · Mortsel, Belgium
      • Agfa HealthCare Canada Subsidiary · Waterloo, Canada
      • Agfa-Gevaert (United States) Subsidiary · Goose Creek, United States
      • Information International, Inc. Subsidiary · Los Angeles
      • AGFA Subsidiary · Mortsel, Belgium
      • AGFA FINANCE Subsidiary · Mortsel, Belgium
      • AGFA FINCO Subsidiary · Mortsel, Belgium
      • AGFA HEALTHCARE Subsidiary · Mortsel, Belgium
      • Agfa-Gevaert (Belgium) Subsidiary · Belgium
      • Agfa-Gevaert (Canada) Subsidiary · Canada
    • American IG Subsidiary · New York City
      • Ansco Subsidiary · Binghamton
    • Apollo Subsidiary · Bratislava, Slovakia
    • BASF Subsidiary · Ludwigshafen am Rhein, Germany
      • BASF Praha, Czechia
      • BASF (Canada) Mississauga, Ontario, Canada
        • BASF AGRICULTURAL SOLUTIONS CANADA INC. Subsidiary · Ludwigshafen, Germany
        • BASF COATINGS INC. Subsidiary · Mississauga, Ontario, Canada
      • BASF (France) Paris, France
      • BASF Antwerpen N.V. Antwerpen, Belgium
      • BASF Polyurethanes Lemförde, Germany
      • BASF Schwarzheide Schwarzheide, Germany
      • BASF Schweiz AG Basel, Switzerland
      • Surventis Münster, Germany
      • BASF (China) Subsidiary · 上海, China
      • BASF (Norway) Subsidiary · Oslo, Norway
      • BASF (Switzerland) Subsidiary · Basel, Switzerland
      • Verenium Corporation Subsidiary · San Diego
      • Wintershall Subsidiary · Kassel, Germany
      • Basf Finance Europe N.V. Subsidiary · 100% · Arnhem, Netherlands
      • A.M. CRAIG LIMITED Subsidiary · Milton Keynes, United Kingdom
      • Alsachimie S.A.S. Subsidiary · Chalampé, France
      • B A S F SRL Subsidiary · Bucharest, Romania
      • ba si fu dian chi cai liao (shang hai) you xian gong si (巴斯夫电池材料(上海)有限公司) Subsidiary · Shanghai, China
      • BASF (Netherlands) Subsidiary
      • BASF (United Kingdom) Subsidiary · United Kingdom
      • BASF (United States) Subsidiary · Florham Park, United States
      • BASF (БАСФ) Subsidiary · Sofia, Bulgaria
      • BASF A/S Subsidiary · København V, Denmark
      • BASF AB Subsidiary · Göteborg, Sweden
      • BASF Agri Production SAS Subsidiary · Ecully Cedex, France
      • and 116 more
    • Bayer Subsidiary · Leverkusen, Germany
    • Behringwerke Subsidiary · Marburg
    • Buna Werke Subsidiary · Merseburg
    • Degesch Subsidiary · Laudenbach, Germany
    • Deutsche Länderbank Subsidiary · Berlin, Germany
    • DK Recycling und Roheisen GmbH Subsidiary · Duisburg, Germany
    • Donau Chemie Subsidiary · Wien, Austria
      • Donau Carbon GmbH Subsidiary · Frankfurt am Main, Germany
      • DONAUCHEM GmbH Subsidiary · Wien, Austria
        • DONAUCHEM s.r.o. Subsidiary · 67.5% · Nymburk, Czechia
    • Gasolin Subsidiary · Hanover
    • Interhandel Subsidiary
    • Leuna works Subsidiary · Leuna
    • Pulverfabrik Rottweil Subsidiary · Rottweil, Germany
    • Wagenmann & Seybel Subsidiary · Vienna, Austria
    • WASAG Subsidiary · Coswig, Germany
      • H.A. Meyer & Riemann Chemische Werke Subsidiary · Germany
    • WCM AG Subsidiary · Berlin, Germany
      • Salzgitter Klöckner-Werke Subsidiary · Salzgitter, Germany
        • HSP Hoesch Spundwand und Profil Gesellschaft mit beschränkter Haftung Subsidiary · Dortmund, Germany
        • Klöckner Eisen Subsidiary · Germany
        • Klöckner-Werke AG Eisen und Stahlwerk Kneuttingen Subsidiary · France
    • Württembergische Cattunmanufaktur Subsidiary · Heidenheim an der Brenz, Germany
    • Braunkohlenwerke Bruckdorf Subsidiary · Germany
    • Deutsche Grube Subsidiary · Germany
    • Guano Works Subsidiary · Germany
    • I.G. Bergwerke Subsidiary · Germany
    • and 1 more

Built from parent and subsidiary links from GLEIF, the Global Legal Entity Identifier Foundation (CC0); subsidiaries, stakes and holdings from Wikidata (CC0); major holders from Schedules 13D and 13G. Each entity in the chart links to its source.

The story

Founded by Italgas in 1929, in Saliceto.1

ACNA traces its origins to the dynamite factory Dinamitificio Barberi, founded on March 26, 1882, in Cegnio, Italy. The factory would change hands to the Italian Society of Explosive Products in 1906 and would see their explosives used in conflicts between Italy and Ethiopia War and the Italo-Turkish War. The factory would be retooled in 1908 to produce Sulfuric Acid, Oleum, and TNT, during which the earliest evidence of pollution from the company began to be noticed. The Cengio factory would be taken over by Italgas in 1925 and would later be grouped with the Rho and Cesano Maderno plants to establish the first ACNA, the Associated National Chemical Companies, which began producing dyes. As the Cengio factory began to retool for the production of dyes for the textile industry, the ACNA became the first Italian producer of synthetic dyes.

In 1931, Italgas was forced to sell ACNA to IG Farben and Montecatini who kept the acronym but changed the name to Azienda Coloranti Nazionali e Affini and resumed production of explosives and toxic gases, which were used in the Second Italo-Abyssinian War and in Eritrea. ACNA would first be brought to court for damages caused by pollution in 1938.

ACNA would follow Montecatini during their merger to Edison in 1966. After leaving the world of weapons manufacturing, they instead focused on the production of synthetic dyes, notably including fabric dyes such as indigo and naphthylamine.

From Wikipedia’s article on ACNA (company), shared under CC BY-SA 4.0.3

Subsidiaries and ownership

Parent company

From Wikidata.1

Acquisitions

  1. Succeeded Società italiana prodotti esplodenti1

Timeline

  1. 1999Dissolved Dissolved1
  2. 1929Founded Founded in Saliceto1

Sources

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

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