{"id":1356,"date":"2025-09-17T10:52:37","date_gmt":"2025-09-17T10:52:37","guid":{"rendered":"https:\/\/polivin.geniusdijitalpazarlama.com\/phthalic-anhydride\/"},"modified":"2025-11-24T15:50:55","modified_gmt":"2025-11-24T15:50:55","slug":"phthalic-anhydride","status":"publish","type":"post","link":"https:\/\/polivin.com.tr\/en\/phthalic-anhydride\/","title":{"rendered":"Phthalic Anhydride"},"content":{"rendered":"\t\t
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Phthalic Anhydride (C8H4O3)<\/h1>\t\t\t\t<\/div>\n\t\t\t\t
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Phthalic Acid Anhydride<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t
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What is Phthalic Anhydride?<\/strong><\/h2>

Phthalic anhydride is an aromatic dicarboxylic acid anhydride<\/strong> with the chemical formula C8H4O3. It is white in color and exists in a solid state.<\/p>

  • Ortho-xylene <\/strong>and naphthalene <\/strong>are used as raw materials in its production.<\/li>
  • It serves as a key intermediate material <\/strong>in industry, particularly for polyester resins, alkyd resins, paints, coatings, plastics, and epoxy resins.<\/strong><\/li>
  • It is also used in various syntheses in the pharmaceutical, agricultural, and chemical industries.<\/strong><\/li><\/ul>

    <\/p>

    Phthalic Anhydride Properties<\/strong><\/h3>

    Property<\/strong><\/p><\/td>

    Explanation<\/strong><\/p><\/td><\/tr><\/thead>

    Physical State<\/strong><\/p><\/td>

    Flake (white solid)<\/p><\/td><\/tr>

    Chemical Formula<\/strong><\/p><\/td>

    C8H4O3<\/p><\/td><\/tr>

    Molecular Weight<\/strong><\/p><\/td>

    148,06 g\/mol<\/p><\/td><\/tr>

    Packaging Type<\/strong><\/p><\/td>

    Bag<\/p><\/td><\/tr>

    Chemical Structure<\/strong><\/p><\/td>

    Aromatic dicarboxylic acid anhydride<\/p><\/td><\/tr><\/tbody><\/table>

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    In Which Industries Is Phthalic Anhydride Used?<\/strong><\/h3>

    Polymer Industry<\/strong><\/p>

    • Polyester resins, alkyd resins, epoxy resins, and thermoplastic elastomers are used as intermediate materials in their production.<\/li><\/ul>

      Paint and Coating Industry<\/strong><\/p>

      • It increases durability, gloss, and adhesion in paints, varnishes, emulsions, and coatings.<\/li><\/ul>

        Pharmaceutical Industry<\/strong><\/p>

        • It plays a role in the synthesis of antibiotics, vitamins, and various pharmaceutical products.<\/li><\/ul>

          Agricultural Industry<\/strong><\/p>

          • It is used in the formulation of insecticides, pesticides, and herbicides.<\/li><\/ul>

            Chemical Industry<\/strong><\/p>

            • It acts as an intermediate product in various chemical reactions and syntheses.<\/li><\/ul>

              <\/p>

              How is Phthalic Anhydride Produced?<\/strong><\/h3>

              Phthalic anhydride is obtained by oxidation<\/strong> from ortho-xylene <\/strong>or naphthalene<\/strong> raw materials.<\/p>

              1. Ortho-Xylene Oxidation (Most Common Method)<\/strong><\/li><\/ol>
                • Ortho-xylene is reacted with oxygen gas or nitrogen oxides at high temperatures.<\/li>
                • Phthalic acid <\/strong>is formed in the presence of a catalyst (usually sulfuric acid).<\/li>
                • Phthalic acid is then converted to its anhydride form.<\/strong><\/li><\/ul>
                  1. Naphthalene Oxidation<\/strong><\/li><\/ol>
                    • Naphthalene is processed with basic substances (such as NaOH, NaHS).<\/li>
                    • It is then oxidized with oxygen gas to produce phthalic acid.<\/strong><\/li>
                    • The phthalic acid obtained is converted into its anhydride form to produce phthalic anhydride.<\/strong><\/li><\/ul>

                      Today, the ortho-xylene oxidation <\/strong>method is widely used because it is more efficient and economical.<\/p>

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                      Phthalic Anhydride (C8H4O3) Phthalic Acid Anhydride What is Phthalic Anhydride? Phthalic anhydride is an aromatic dicarboxylic acid anhydride with the chemical formula C8H4O3. It is white in color and exists in a solid state. Ortho-xylene and naphthalene are used as raw materials in its production. It serves as a key intermediate material in industry, particularly […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[37,41,40,43,39],"tags":[],"class_list":["post-1356","post","type-post","status-publish","format-standard","hentry","category-construction-chemicals","category-other-chemicals","category-paint-chemicals","category-plastic-rubber","category-textile-leather-chemicals"],"_links":{"self":[{"href":"https:\/\/polivin.com.tr\/en\/wp-json\/wp\/v2\/posts\/1356","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/polivin.com.tr\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/polivin.com.tr\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/polivin.com.tr\/en\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/polivin.com.tr\/en\/wp-json\/wp\/v2\/comments?post=1356"}],"version-history":[{"count":1,"href":"https:\/\/polivin.com.tr\/en\/wp-json\/wp\/v2\/posts\/1356\/revisions"}],"predecessor-version":[{"id":1357,"href":"https:\/\/polivin.com.tr\/en\/wp-json\/wp\/v2\/posts\/1356\/revisions\/1357"}],"wp:attachment":[{"href":"https:\/\/polivin.com.tr\/en\/wp-json\/wp\/v2\/media?parent=1356"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/polivin.com.tr\/en\/wp-json\/wp\/v2\/categories?post=1356"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/polivin.com.tr\/en\/wp-json\/wp\/v2\/tags?post=1356"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}