{"id":4258,"date":"2025-07-25T03:16:08","date_gmt":"2025-07-25T03:16:08","guid":{"rendered":"https:\/\/jinancuchem.com\/?post_type=product&p=4258"},"modified":"2025-07-25T03:16:08","modified_gmt":"2025-07-25T03:16:08","slug":"1-hydroxy-ethylidene-11-diphosphonic-acid%ef%bc%88hedp%ef%bc%89","status":"publish","type":"product","link":"https:\/\/jinancuchem.com\/fr\/produit\/1-hydroxy-ethylidene-11-diphosphonic-acid%ef%bc%88hedp%ef%bc%89\/","title":{"rendered":"Acide 1-Hydroxy Ethylid\u00e8ne-1,1-Diphosphonique\uff08HEDP\uff09"},"content":{"rendered":"

\u3010CAS\u3011 2809-21-4<\/p>\n

Alias : Acide 1-Hydroxy Ethylid\u00e8ne-1, 1-Diphosphonique, Dequest 2010, HEDPA<\/p>\n

Formule mol\u00e9culaire : C2<\/sub>H8<\/sub>O7<\/sub>P2<\/sub>\u00a0Masse mol\u00e9culaire relative : 206,02<\/p>\n

Formule structurelle :\"\"<\/p>\n

 <\/p>\n

 <\/p>\n

1.Propri\u00e9t\u00e9 du produit<\/p>\n

Le HEDP est un inhibiteur de corrosion \u00e0 base d'acide organophosphorique. Il peut se ch\u00e9later avec les ions Fe, Cu et Zn pour former des compos\u00e9s ch\u00e9latants stables. Il peut dissoudre les mat\u00e9riaux oxyd\u00e9s \u00e0 la surface de ces m\u00e9taux. Le HEDP pr\u00e9sente d'excellents effets d'inhibition de la corrosion et de l'entartrage \u00e0 une temp\u00e9rature de 250\u2103. Le HEDP a une bonne stabilit\u00e9 chimique sous un pH \u00e9lev\u00e9, il est difficilement hydrolysable et difficilement d\u00e9composable sous des conditions normales de lumi\u00e8re et de chaleur. Sa tol\u00e9rance \u00e0 l'oxydation acide\/alcaline et au chlore est meilleure que celle des autres acides organophosphoriques (sel). Le HEDP peut r\u00e9agir avec les ions m\u00e9talliques dans le syst\u00e8me d'eau pour former un complexe ch\u00e9lateur hexa\u00e9l\u00e9mentaire, avec l'ion calcium en particulier. Par cons\u00e9quent, le HEDP a un bon effet anti-calcaire et un effet de seuil visible. Lorsqu'il est associ\u00e9 \u00e0 d'autres produits chimiques de traitement de l'eau, il pr\u00e9sente de bons effets synergiques.<\/p>\n

2.\"\"<\/p>\n

 <\/p>\n

    \n
  1. Champ d'application et utilisation<\/li>\n<\/ol>\n

    Le HEDP est utilis\u00e9 comme inhibiteur de tartre et de corrosion dans les syst\u00e8mes de circulation d'eau froide, les champs p\u00e9trolif\u00e8res et les chaudi\u00e8res \u00e0 basse pression dans des domaines tels que l'\u00e9nergie \u00e9lectrique, l'industrie chimique, la m\u00e9tallurgie, les engrais, etc. Dans l'industrie du tissage l\u00e9ger, le HEDP est utilis\u00e9 comme d\u00e9tergent pour les m\u00e9taux et les non-m\u00e9taux. Dans l'industrie de la teinture, le HEDP est utilis\u00e9 comme stabilisateur de peroxyde et agent fixateur de teinture ; dans la galvanoplastie non cyanur\u00e9e, le HEDP est utilis\u00e9 comme agent ch\u00e9lateur. Le dosage de 1-10mg\/L est pr\u00e9f\u00e9r\u00e9 comme inhibiteur de tartre, 10-50mg\/L comme inhibiteur de corrosion, et 1000-2000mg\/L comme d\u00e9tergent. En g\u00e9n\u00e9ral, le HEDP est utilis\u00e9 avec l'acide polycarboxylique.<\/p>\n

      \n
    1. Emballage et stockage<\/li>\n<\/ol>\n

      Il est g\u00e9n\u00e9ralement emball\u00e9 dans des f\u00fbts en plastique de 30 kg ou 250 kg, et peut \u00e9galement \u00eatre d\u00e9termin\u00e9 par les utilisateurs. Il peut \u00eatre stock\u00e9 pendant dix mois dans un endroit ombrag\u00e9 et sec, dans des conditions ambiantes.<\/p>\n

        \n
      1. 5. Protection de la s\u00e9curit\u00e9 :<\/li>\n<\/ol>\n

        Ce produit est acide. \u00c9viter le contact avec les yeux et la peau. Rincer abondamment \u00e0 l'eau peu apr\u00e8s avoir \u00e9t\u00e9 souill\u00e9 par le corps.<\/p>","protected":false},"excerpt":{"rendered":"

        \u3010CAS\u3011\u00a02809-21-4 Alias: 1-Hydroxy Ethylidene-1, 1-Diphosphonic Acid,\u00a0Dequest 2010, HEDPA Molecular formula: C2H8O7P2\u00a0Relative molecular mass: 206.02 Structural formula:     1.Product Property HEDP is an organophosphoric acid corrosion inhibitor. It can chelate with Fe, Cu, and Zn ions to form stable chelating compounds. It can dissolve the oxidized materials on these metals\u2019\u00a0surfaces. HEDP shows excellent scale and […]<\/p>\n","protected":false},"featured_media":4246,"template":"","meta":{"_seopress_robots_primary_cat":"","_seopress_titles_title":"","_seopress_titles_desc":"","_seopress_robots_index":"","_uag_custom_page_level_css":"","site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","theme-transparent-header-meta":"default","adv-header-id-meta":"","stick-header-meta":"default","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"set","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center 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Alias: 1-Hydroxy Ethylidene-1, 1-Diphosphonic Acid,\u00a0Dequest 2010, HEDPA Molecular formula: C2H8O7P2\u00a0Relative molecular mass: 206.02 Structural formula:     1.Product Property HEDP is an organophosphoric acid corrosion inhibitor. It can chelate with Fe, Cu, and Zn ions to form stable chelating compounds. It can dissolve the oxidized materials on these metals\u2019\u00a0surfaces. HEDP shows excellent scale and\u2026","_links":{"self":[{"href":"https:\/\/jinancuchem.com\/fr\/wp-json\/wp\/v2\/product\/4258","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/jinancuchem.com\/fr\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/jinancuchem.com\/fr\/wp-json\/wp\/v2\/types\/product"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/jinancuchem.com\/fr\/wp-json\/wp\/v2\/media\/4246"}],"wp:attachment":[{"href":"https:\/\/jinancuchem.com\/fr\/wp-json\/wp\/v2\/media?parent=4258"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/jinancuchem.com\/fr\/wp-json\/wp\/v2\/product_brand?post=4258"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/jinancuchem.com\/fr\/wp-json\/wp\/v2\/product_cat?post=4258"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/jinancuchem.com\/fr\/wp-json\/wp\/v2\/product_tag?post=4258"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}