{"id":11300,"date":"2025-04-10T01:27:00","date_gmt":"2025-04-10T01:27:00","guid":{"rendered":"https:\/\/rawchemicalmart.com\/?p=11300"},"modified":"2026-02-09T09:08:48","modified_gmt":"2026-02-09T09:08:48","slug":"proprietes-et-applications-du-dichloroisocyanurate-de-sodium-et-de-lacide-trichloroisocyanurique","status":"publish","type":"post","link":"https:\/\/rawchemicalmart.com\/fr\/proprietes-et-applications-du-dichloroisocyanurate-de-sodium-et-de-lacide-trichloroisocyanurique\/","title":{"rendered":"Dichloroisocyanurate de sodium et acide trichloroisocyanurique\u00a0: propri\u00e9t\u00e9s et applications"},"content":{"rendered":"

1. Introduction<\/h2>\n\n\n\n

Le dichloroisocyanurate de sodium (NaDCC) et l'acide trichloroisocyanurique (TCCA) sont des d\u00e9sinfectants chlor\u00e9s largement utilis\u00e9s dans le traitement de l'eau, la d\u00e9sinfection des piscines, la st\u00e9rilisation industrielle et d'autres applications li\u00e9es \u00e0 l'hygi\u00e8ne. Ces deux compos\u00e9s pr\u00e9sentent une teneur \u00e9lev\u00e9e en chlore actif et lib\u00e8rent de l'acide hypochloreux (HOCl) dans l'eau, \u00e9liminant ainsi efficacement les bact\u00e9ries et les virus. De plus, ils contiennent des structures d'acide cyanurique (CYA) qui contribuent \u00e0 stabiliser le chlore en ext\u00e9rieur en r\u00e9duisant sa d\u00e9gradation par les ultraviolets (UV). Cet article explore leur synth\u00e8se, leurs m\u00e9canismes de d\u00e9composition, le calcul de leur teneur en chlore, leurs propri\u00e9t\u00e9s stabilisatrices et leurs applications dans la d\u00e9sinfection des piscines.<\/p>\n\n\n\n

2. Synth\u00e8se du TCCA et du NaDCC<\/h2>\n\n\n\n

(1) Acide trichloroisocyanurique (TCCA)<\/h3>\n\n\n\n

Le TCCA est synth\u00e9tis\u00e9 \u00e0 partir de l'acide cyanurique (C\u2083H\u2083N\u2083O\u2083) par une r\u00e9action de chloration\u00a0:<\/p>\n\n\n\n

\"\"<\/figure>\n\n\n\n

Le TCCA contient trois atomes de chlore qui peuvent \u00eatre lib\u00e9r\u00e9s dans des solutions aqueuses, ce qui lui conf\u00e8re une teneur \u00e9lev\u00e9e en chlore disponible d'environ 90%.<\/p>\n\n\n\n

(2) Dichloroisocyanurate de sodium (NaDCC)<\/h3>\n\n\n\n

Le NaDCC est synth\u00e9tis\u00e9 de mani\u00e8re similaire, mais avec un degr\u00e9 de chloration inf\u00e9rieur et l'introduction d'ions sodium\u00a0:<\/p>\n\n\n\n

\"\"<\/figure>\n\n\n\n

\u00c9tant donn\u00e9 que le NaDCC ne lib\u00e8re que deux atomes de chlore, sa teneur en chlore disponible est relativement plus faible (environ 56-60%).<\/p>\n\n\n\n

3. M\u00e9canisme de d\u00e9composition dans l'eau et de lib\u00e9ration du chlore<\/h2>\n\n\n\n

(1) R\u00e9actions chimiques<\/h3>\n\n\n\n

Lorsqu'ils sont dissous dans l'eau, le TCCA et le NaDCC subissent une hydrolyse, lib\u00e9rant de l'acide hypochloreux (HOCl), le d\u00e9sinfectant principal\u00a0:<\/p>\n\n\n\n

\"\"<\/figure>\n\n\n\n

Le TCCA lib\u00e8re trois mol\u00e9cules de HOCl, tandis que le NaDCC n'en lib\u00e8re que deux. Le TCCA poss\u00e8de des capacit\u00e9s de d\u00e9sinfection sup\u00e9rieures, tandis que le NaDCC se dissout plus rapidement.<\/strong>, ce qui le rend adapt\u00e9 aux applications d'assainissement rapide.<\/p>\n\n\n\n

(2) R\u00e9versibilit\u00e9 et contr\u00f4le de l'\u00e9quilibre<\/h3>\n\n\n\n

Ce processus d'hydrolyse est r\u00e9versible. Lorsque la concentration de chlore diminue (par exemple, en raison de la consommation d'HOCl), la r\u00e9action se d\u00e9place vers la droite, lib\u00e9rant davantage de chlore. Inversement, en pr\u00e9sence d'un exc\u00e8s d'HOCl, la r\u00e9action s'inverse, ralentissant la lib\u00e9ration de chlore. Dans des conditions appropri\u00e9es, le TCCA et le NaDCC fournissent tous deux un lib\u00e9ration prolong\u00e9e de chlore<\/strong>, en maintenant une d\u00e9sinfection efficace au fil du temps.<\/p>\n\n\n\n

4. Calcul de la teneur en chlore disponible<\/h2>\n\n\n\n

Le chlore actif d\u00e9signe la proportion de chlore contenue dans un compos\u00e9 qui peut \u00eatre lib\u00e9r\u00e9e comme d\u00e9sinfectant actif. Il se calcule comme suit\u00a0:<\/p>\n\n\n\n

\"\"<\/figure>\n\n\n\n

Pour TCCA\u00a0:<\/p>\n\n\n\n

    \n
  • Poids mol\u00e9culaire : 232,41 g\/mol<\/strong><\/li>\n\n\n\n
  • Contribution massique de 3 atomes de chlore : 106,35 g<\/strong><\/li>\n\n\n\n
  • Calcul:<\/li>\n<\/ul>\n\n\n\n
    \"\"<\/figure>\n\n\n\n
      \n
    • Puisqu'une mol\u00e9cule de TCCA lib\u00e8re trois atomes de chlore actifs, Sa teneur en chlore disponible est d'environ 90%<\/strong>.<\/li>\n<\/ul>\n\n\n\n

      Le NaDCC suit un calcul similaire, avec une teneur en chlore disponible de 56-60%<\/strong>.<\/p>\n\n\n\n

      5. L'acide cyanurique comme stabilisant<\/h2>\n\n\n\n

      (1) Le r\u00f4le de l'acide cyanurique dans la stabilisation du chlore<\/h3>\n\n\n\n

      Dans le traitement des piscines, le chlore se d\u00e9grade rapidement sous l'effet des UV. L'acide cyanurique (CYA) agit comme stabilisant en formant une solution Complexe HOCl-CYA<\/strong>, ce qui r\u00e9duit le taux de d\u00e9gradation du chlore\u00a0:<\/p>\n\n\n\n

      \"\"<\/figure>\n\n\n\n

      Ce complexe ralentit la perte de chlore, assurant ainsi un effet d\u00e9sinfectant plus durable.<\/p>\n\n\n\n

      (2) Les comprim\u00e9s de chlore disponibles sur le march\u00e9 contiennent-ils de l'acide cyanurique ?<\/h3>\n\n\n\n

      Depuis Le TCCA et le NaDCC contiennent naturellement des groupes d'acide cyanurique<\/strong>, Les comprim\u00e9s de chlore disponibles dans le commerce ne n\u00e9cessitent g\u00e9n\u00e9ralement pas d'ajout d'acide cyanurique. Cependant, pour d'autres d\u00e9sinfectants \u00e0 base de chlore comme l'hypochlorite de sodium (NaClO), l'acide cyanurique est souvent ajout\u00e9 s\u00e9par\u00e9ment pour am\u00e9liorer leur stabilit\u00e9.<\/p>\n\n\n\n

      (3) Contr\u00f4le des niveaux d'acide cyanurique<\/h3>\n\n\n\n
        \n
      • Concentration optimale : 30-50 ppm<\/strong> (des niveaux plus \u00e9lev\u00e9s r\u00e9duisent l'efficacit\u00e9 de la d\u00e9sinfection).<\/li>\n\n\n\n
      • Un exc\u00e8s de CYA peut r\u00e9duire l'activit\u00e9 du chlore<\/strong>, car une liaison excessive r\u00e9duit le chlore libre disponible.<\/li>\n\n\n\n
      • Si la concentration de CYA d\u00e9passe 100 ppm, une dilution avec de l'eau fra\u00eeche est n\u00e9cessaire.<\/strong> pour r\u00e9tablir l'efficacit\u00e9.<\/li>\n<\/ul>\n\n\n\n

        6. Comparaison et s\u00e9lection du TCCA et du NaDCC<\/h2>\n\n\n
        \n\n\n\n\t\n\n\t\n\t\n\t\n\t\n\t
        Fonctionnalit\u00e9<\/th>Acide trichloroisocyanurique (TCCA)<\/th>Dichloroisocyanurate de sodium (NaDCC)<\/th>\n<\/tr>\n<\/thead>\n
        Teneur en chlore disponible<\/td>90%<\/td>56-60%<\/td>\n<\/tr>\n
        Vitesse de dissolution<\/td>Lent<\/td>Rapide<\/td>\n<\/tr>\n
        Effet du pH<\/td>Diminue l\u00e9g\u00e8rement le pH<\/td>Augmente l\u00e9g\u00e8rement le pH<\/td>\n<\/tr>\n
        Meilleures applications<\/td>D\u00e9sinfection \u00e0 long terme, dosage continu<\/td>Assainissement rapide, d\u00e9sinfection d'urgence<\/td>\n<\/tr>\n
        Contenu du stabilisateur<\/td>Contient de l'acide cyanurique pour la stabilit\u00e9<\/td>Contient de l'acide cyanurique mais se d\u00e9grade plus rapidement<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n\n\n\n

        (1) TCCA est id\u00e9al pour :<\/h3>\n\n\n\n
          \n
        • Piscines, traitement des eaux industrielles et tours de refroidissement<\/strong> o\u00f9 une lib\u00e9ration de chlore \u00e0 long terme est n\u00e9cessaire.<\/li>\n\n\n\n
        • Applications \u00e0 lib\u00e9ration lente<\/strong>, en maintenant les niveaux de chlore au fil du temps.<\/li>\n<\/ul>\n\n\n\n

          (2) Le NaDCC est id\u00e9al pour :<\/h3>\n\n\n\n
            \n
          • D\u00e9sinfection d'urgence (par exemple, traitement de l'eau potable, assainissement des h\u00f4pitaux).<\/strong><\/li>\n\n\n\n
          • Situations n\u00e9cessitant une dissolution rapide et une action imm\u00e9diate du chlore.<\/strong><\/li>\n<\/ul>\n\n\n\n

            7. Conclusion<\/h2>\n\n\n\n

            Le dichloroisocyanurate de sodium (NaDCC) et l'acide trichloroisocyanurique (TCCA) sont deux d\u00e9sinfectants chlor\u00e9s tr\u00e8s efficaces qui lib\u00e8rent de l'acide hypochloreux (HOCl) dans l'eau. Ces deux compos\u00e9s contiennent des structures d'acide cyanurique, qui contribuent \u00e0 stabiliser le chlore et \u00e0 prolonger son action d\u00e9sinfectante. Le TCCA, plus concentr\u00e9 en chlore, convient au traitement de l'eau \u00e0 long terme, tandis que le NaDCC se dissout rapidement et est id\u00e9al pour une d\u00e9sinfection rapide. Un usage appropri\u00e9 de l'acide cyanurique, avec le maintien de sa concentration dans une plage optimale, permet de maximiser l'efficacit\u00e9 du chlore et de garantir une eau saine et propre. Choisir le d\u00e9sinfectant chlor\u00e9 adapt\u00e9 aux besoins de l'application peut mener \u00e0\u2026 une gestion de l'assainissement plus efficace et plus rentable<\/strong>.<\/p>\n\n\n\n

            <\/p>","protected":false},"excerpt":{"rendered":"

            Le dichloroisocyanurate de sodium (NaDCC) et l'acide trichloroisocyanurique (TCCA) sont des d\u00e9sinfectants \u00e0 base de chlore utilis\u00e9s dans le traitement de l'eau. Le TCCA assure une d\u00e9sinfection longue dur\u00e9e, tandis que le NaDCC se dissout rapidement pour un assainissement rapide. Tous deux contiennent de l'acide cyanurique (CYA) comme stabilisant, emp\u00eachant la perte de chlore sous l'effet des UV. Une bonne gestion de l'acide cyanurique garantit une d\u00e9sinfection efficace et \u00e9quilibr\u00e9e.\n<\/p>","protected":false},"author":3,"featured_media":11163,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[40],"tags":[37],"class_list":["post-11300","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-water-treatment","tag-important"],"acf":[],"yoast_head":"\nSodium Dichloroisocyanurate and Trichloroisocyanuric Acid: Properties and Applications - rawchemicalmart.com<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/rawchemicalmart.com\/fr\/proprietes-et-applications-du-dichloroisocyanurate-de-sodium-et-de-lacide-trichloroisocyanurique\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Sodium Dichloroisocyanurate and Trichloroisocyanuric Acid: Properties and Applications - rawchemicalmart.com\" \/>\n<meta property=\"og:description\" content=\"Sodium dichloroisocyanurate (NaDCC) and trichloroisocyanuric acid (TCCA) are chlorine-based disinfectants used in water treatment. 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