{"id":718787,"date":"2024-05-20T11:19:00","date_gmt":"2024-05-20T05:49:00","guid":{"rendered":"https:\/\/infinitylearn.com\/surge\/?p=718787"},"modified":"2024-05-20T11:19:00","modified_gmt":"2024-05-20T05:49:00","slug":"pyridine-c5h5n-structure-formula-molecular-mass-properties-and-applications","status":"publish","type":"post","link":"https:\/\/infinitylearn.com\/surge\/science\/pyridine\/","title":{"rendered":"Pyridine (C5H5N) &#8211; Structure, Formula, Molecular Mass, Properties, and Applications"},"content":{"rendered":"<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_37 counter-hierarchy ez-toc-counter ez-toc-grey ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\">\n<p class=\"ez-toc-title\">Table of Contents<\/p>\n<span class=\"ez-toc-title-toggle\"><a href=\"#\" class=\"ez-toc-pull-right ez-toc-btn ez-toc-btn-xs ez-toc-btn-default ez-toc-toggle\" style=\"display: none;\"><label for=\"item\" aria-label=\"Table of Content\"><span style=\"display: flex;align-items: center;width: 35px;height: 30px;justify-content: center;\"><svg style=\"fill: #999;color:#999\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" class=\"list-377408\" width=\"20px\" height=\"20px\" viewBox=\"0 0 24 24\" fill=\"none\"><path d=\"M6 6H4v2h2V6zm14 0H8v2h12V6zM4 11h2v2H4v-2zm16 0H8v2h12v-2zM4 16h2v2H4v-2zm16 0H8v2h12v-2z\" fill=\"currentColor\"><\/path><\/svg><svg style=\"fill: #999;color:#999\" class=\"arrow-unsorted-368013\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"10px\" height=\"10px\" viewBox=\"0 0 24 24\" version=\"1.2\" baseProfile=\"tiny\"><path d=\"M18.2 9.3l-6.2-6.3-6.2 6.3c-.2.2-.3.4-.3.7s.1.5.3.7c.2.2.4.3.7.3h11c.3 0 .5-.1.7-.3.2-.2.3-.5.3-.7s-.1-.5-.3-.7zM5.8 14.7l6.2 6.3 6.2-6.3c.2-.2.3-.5.3-.7s-.1-.5-.3-.7c-.2-.2-.4-.3-.7-.3h-11c-.3 0-.5.1-.7.3-.2.2-.3.5-.3.7s.1.5.3.7z\"\/><\/svg><\/span><\/label><input type=\"checkbox\" id=\"item\"><\/a><\/span><\/div>\n<nav><ul class='ez-toc-list ez-toc-list-level-1' style='display:block'><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/infinitylearn.com\/surge\/science\/pyridine\/#What_is_Pyridine\" title=\"What is Pyridine?\">What is Pyridine?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/infinitylearn.com\/surge\/science\/pyridine\/#Properties_of_Pyridine_-_C5H5N\" title=\"Properties of Pyridine \u2013 C5H5N\">Properties of Pyridine \u2013 C5H5N<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/infinitylearn.com\/surge\/science\/pyridine\/#Synthesis_of_Pyridine\" title=\"Synthesis of Pyridine\">Synthesis of Pyridine<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/infinitylearn.com\/surge\/science\/pyridine\/#Pyridine_Derivatives_and_Their_Uses\" title=\"Pyridine Derivatives and Their Uses\">Pyridine Derivatives and Their Uses<\/a><ul class='ez-toc-list-level-3'><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/infinitylearn.com\/surge\/science\/pyridine\/#Conclusion\" title=\"Conclusion\">Conclusion<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/infinitylearn.com\/surge\/science\/pyridine\/#Pyridine_FAQs\" title=\"Pyridine FAQs\">Pyridine FAQs<\/a><ul class='ez-toc-list-level-3'><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"https:\/\/infinitylearn.com\/surge\/science\/pyridine\/#What_was_pyridine_used_for\" title=\"What was pyridine used for?\">What was pyridine used for?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-8\" href=\"https:\/\/infinitylearn.com\/surge\/science\/pyridine\/#What_is_the_formula_of_pyridine\" title=\"What is the formula of pyridine?\">What is the formula of pyridine?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-9\" href=\"https:\/\/infinitylearn.com\/surge\/science\/pyridine\/#What_is_the_function_of_pyridine\" title=\"What is the function of pyridine?\">What is the function of pyridine?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-10\" href=\"https:\/\/infinitylearn.com\/surge\/science\/pyridine\/#Is_pyridine_a_Lewis_base\" title=\"Is pyridine a Lewis base?\">Is pyridine a Lewis base?<\/a><\/li><\/ul><\/li><\/ul><\/nav><\/div>\n<h2><span class=\"ez-toc-section\" id=\"What_is_Pyridine\"><\/span>What is Pyridine?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>Pyridine is a colorless, flammable liquid with a distinctive, unpleasant odor. It is a heterocyclic aromatic compound that contains a single nitrogen atom in a six-membered ring. The <strong>pyridine structure<\/strong> consists of a benzene ring with one of the carbon atoms replaced by a nitrogen atom.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"Properties_of_Pyridine_-_C5H5N\"><\/span>Properties of Pyridine \u2013 C5H5N<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>The <strong>pyridine formula<\/strong> is C\u2085H\u2085N, and its IUPAC name is pyridine. The <strong>pyridine molecular weight<\/strong> is 79.10 g\/mol, and its <strong>pyridine density<\/strong> is 0.978 g\/mL at 20\u00b0C.<\/p>\n<p>Pyridine has a boiling point of 115.2\u00b0C (239.4\u00b0F) and a melting point of -42\u00b0C (-43.6\u00b0F). It is a polar compound with a dielectric constant of 12.3 at 20\u00b0C. Pyridine has a refractive index of 1.5092 at 20\u00b0C and a viscosity of 0.88 cP at 20\u00b0C.<\/p>\n<p>The <strong>pkb of pyridine<\/strong> is approximately 8.8, indicating that it is a relatively weak base. Pyridine is soluble in water and many organic solvents, such as ethanol, ether, and chloroform. It is slightly soluble in carbon disulfide and insoluble in aliphatic hydrocarbons.<\/p>\n<p>Pyridine reacts with hydrochloric acid (HCl) to form a salt, pyridinium chloride. The <strong>pyridine CAS No<\/strong> is 110-86-1.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"Synthesis_of_Pyridine\"><\/span>Synthesis of Pyridine<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>Pyridine can be synthesized through several methods, including the <strong>Hantzsch pyridine synthesis<\/strong> and other <strong>pyridine synthesis<\/strong> reactions. These methods involve the condensation of aldehydes, ketones, and ammonia or amines to form the pyridine ring.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"Pyridine_Derivatives_and_Their_Uses\"><\/span>Pyridine Derivatives and Their Uses<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>One example of a central nervous system (CNS) stimulant drug belonging to the pyridine derivative class is nicotine, which is found in tobacco plants. Pyridine and its derivatives are used in the production of various chemicals, such as herbicides, insecticides, and pharmaceuticals.<\/p>\n<p>Pyridine is an aromatic compound due to the presence of a delocalized \u03c0-electron system in its ring structure. The <strong>pyridine resonance<\/strong> and <strong>resonance structure of pyridine<\/strong> contribute to its aromatic stability.<\/p>\n<p>The basicity of pyridine is higher than that of pyrrole, another aromatic heterocyclic compound, due to the greater electronegativity of the nitrogen atom in pyridine compared to the nitrogen atom in pyrrole. The <strong>basicity of pyrrole pyridine and piperidine<\/strong> is compared to understand the effect of nitrogen atom position on basicity.<\/p>\n<p>Pyridine is used as a solvent in the production of paints, varnishes, and lacquers. It is also used as a corrosion inhibitor in metal-working fluids and as a denaturant for ethanol.<\/p>\n<p>In the pharmaceutical industry, pyridine is used as a building block for the synthesis of various drugs, such as antidepressants, anticonvulsants, and nicotine replacement therapies. Pyridine-containing compounds are also used in the treatment of certain neurological disorders, such as Alzheimer&#8217;s disease and Parkinson&#8217;s disease.<\/p>\n<p>The <strong>medicinal use of pyridine<\/strong> is extensive, and it is an essential compound in the development of new drugs. Pyridine is also used as a catalyst in the production of various organic compounds, such as ketones, aldehydes, and alcohols.<\/p>\n<p>In the textile industry, pyridine and its derivatives are used as dye intermediates and as auxiliaries in dyeing and printing processes. They are also used as brightening agents in the production of rayon and other synthetic fibers.<\/p>\n<p>Pyridine is used as a corrosion inhibitor in the oil and gas industry. It is added to drilling fluids and completion fluids to prevent corrosion of metal equipment and to protect against scale formation.<\/p>\n<p>In the food industry, pyridine and its derivatives are used as flavoring agents and as preservatives. They are also used as antimicrobial agents in the production of food packaging materials.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Conclusion\"><\/span>Conclusion<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>Pyridine is a versatile and important compound in organic chemistry and has numerous applications in industry and medicine. Its unique structure, aromatic nature, and basicity contribute to its diverse uses and make it an essential compound in various fields of study. The development of new pyridine-based compounds and the exploration of their potential applications continue to be an active area of research in chemistry and related fields.<\/p>\n<p>Pyridine is available in various forms, including <strong>pyridine tablet<\/strong>, and its <strong>pyridine structure formula<\/strong> is C\u2085H\u2085N. The <strong>resonating structure of pyridine<\/strong> is responsible for its aromatic properties, and it is <strong>is pyridine aromatic<\/strong> due to the delocalization of electrons in its ring structure.<\/p>\n<p>The <strong>why pyridine is more basic than pyrrole<\/strong> is due to the greater electronegativity of the nitrogen atom in pyridine compared to the nitrogen atom in pyrrole. Pyridine is an essential compound in many industries, and its <strong>pyridine uses<\/strong> continue to expand as new applications are discovered.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"Pyridine_FAQs\"><\/span>Pyridine FAQs<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\t\t<section class=\"sc_fs_faq sc_card \">\n\t\t\t<div>\n\t\t\t\t<h3><span class=\"ez-toc-section\" id=\"What_was_pyridine_used_for\"><\/span>What was pyridine used for?<span class=\"ez-toc-section-end\"><\/span><\/h3>\t\t\t\t<div>\n\t\t\t\t\t\t\t\t\t\t<p>\n\t\t\t\t\t\tPyridine is commonly used in organic synthesis as a solvent and as a precursor in the production of various chemicals, including pharmaceuticals, herbicides, and insecticides. It is also utilized in the manufacturing of rubber, textiles, and paints due to its versatile properties. \t\t\t\t\t<\/p>\n\t\t\t\t<\/div>\n\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"sc_fs_faq sc_card \">\n\t\t\t<div>\n\t\t\t\t<h3><span class=\"ez-toc-section\" id=\"What_is_the_formula_of_pyridine\"><\/span>What is the formula of pyridine?<span class=\"ez-toc-section-end\"><\/span><\/h3>\t\t\t\t<div>\n\t\t\t\t\t\t\t\t\t\t<p>\n\t\t\t\t\t\tThe chemical formula of pyridine is C\u2085H\u2085N, indicating that it consists of five carbon atoms, five hydrogen atoms, and one nitrogen atom in its molecular structure. \t\t\t\t\t<\/p>\n\t\t\t\t<\/div>\n\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"sc_fs_faq sc_card \">\n\t\t\t<div>\n\t\t\t\t<h3><span class=\"ez-toc-section\" id=\"What_is_the_function_of_pyridine\"><\/span>What is the function of pyridine?<span class=\"ez-toc-section-end\"><\/span><\/h3>\t\t\t\t<div>\n\t\t\t\t\t\t\t\t\t\t<p>\n\t\t\t\t\t\tPyridine serves multiple functions in different industries. It acts as a solvent, a catalyst in organic reactions, a corrosion inhibitor, and a building block for the synthesis of pharmaceuticals and other organic compounds. Pyridine also finds applications in the production of dyes, rubber accelerators, and as a denaturant for ethanol. \t\t\t\t\t<\/p>\n\t\t\t\t<\/div>\n\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"sc_fs_faq sc_card \">\n\t\t\t<div>\n\t\t\t\t<h3><span class=\"ez-toc-section\" id=\"Is_pyridine_a_Lewis_base\"><\/span>Is pyridine a Lewis base?<span class=\"ez-toc-section-end\"><\/span><\/h3>\t\t\t\t<div>\n\t\t\t\t\t\t\t\t\t\t<p>\n\t\t\t\t\t\tYes, pyridine is considered a Lewis base because it can donate a pair of electrons from its nitrogen atom to form a coordinate covalent bond with a Lewis acid. This property of pyridine as a Lewis base is essential in various chemical reactions and coordination complexes. \t\t\t\t\t<\/p>\n\t\t\t\t<\/div>\n\t\t\t<\/div>\n\t\t<\/section>\n\t\t\n<script type=\"application\/ld+json\">\n\t{\n\t\t\"@context\": \"https:\/\/schema.org\",\n\t\t\"@type\": \"FAQPage\",\n\t\t\"mainEntity\": [\n\t\t\t\t\t{\n\t\t\t\t\"@type\": \"Question\",\n\t\t\t\t\"name\": \"What was pyridine used for?\",\n\t\t\t\t\"acceptedAnswer\": {\n\t\t\t\t\t\"@type\": \"Answer\",\n\t\t\t\t\t\"text\": \"Pyridine is commonly used in organic synthesis as a solvent and as a precursor in the production of various chemicals, including pharmaceuticals, herbicides, and insecticides. It is also utilized in the manufacturing of rubber, textiles, and paints due to its versatile properties.\"\n\t\t\t\t\t\t\t\t\t}\n\t\t\t}\n\t\t\t,\t\t\t\t{\n\t\t\t\t\"@type\": \"Question\",\n\t\t\t\t\"name\": \"What is the formula of pyridine?\",\n\t\t\t\t\"acceptedAnswer\": {\n\t\t\t\t\t\"@type\": \"Answer\",\n\t\t\t\t\t\"text\": \"The chemical formula of pyridine is C\u2085H\u2085N, indicating that it consists of five carbon atoms, five hydrogen atoms, and one nitrogen atom in its molecular structure.\"\n\t\t\t\t\t\t\t\t\t}\n\t\t\t}\n\t\t\t,\t\t\t\t{\n\t\t\t\t\"@type\": \"Question\",\n\t\t\t\t\"name\": \"What is the function of pyridine?\",\n\t\t\t\t\"acceptedAnswer\": {\n\t\t\t\t\t\"@type\": \"Answer\",\n\t\t\t\t\t\"text\": \"Pyridine serves multiple functions in different industries. It acts as a solvent, a catalyst in organic reactions, a corrosion inhibitor, and a building block for the synthesis of pharmaceuticals and other organic compounds. Pyridine also finds applications in the production of dyes, rubber accelerators, and as a denaturant for ethanol.\"\n\t\t\t\t\t\t\t\t\t}\n\t\t\t}\n\t\t\t,\t\t\t\t{\n\t\t\t\t\"@type\": \"Question\",\n\t\t\t\t\"name\": \"Is pyridine a Lewis base?\",\n\t\t\t\t\"acceptedAnswer\": {\n\t\t\t\t\t\"@type\": \"Answer\",\n\t\t\t\t\t\"text\": \"Yes, pyridine is considered a Lewis base because it can donate a pair of electrons from its nitrogen atom to form a coordinate covalent bond with a Lewis acid. This property of pyridine as a Lewis base is essential in various chemical reactions and coordination complexes.\"\n\t\t\t\t\t\t\t\t\t}\n\t\t\t}\n\t\t\t\t\t\t]\n\t}\n<\/script>\n\n","protected":false},"excerpt":{"rendered":"<p>What is Pyridine? Pyridine is a colorless, flammable liquid with a distinctive, unpleasant odor. It is a heterocyclic aromatic compound [&hellip;]<\/p>\n","protected":false},"author":53,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_yoast_wpseo_focuskw":"Pyridine","_yoast_wpseo_title":"Pyridine (C5H5N) - Structure, Formula, Molecular Mass, Properties, and Applications","_yoast_wpseo_metadesc":"Pyridine is a colorless, flammable liquid with a distinctive, unpleasant odor. It is a heterocyclic aromatic compound that contains a single nitrogen atom in a six-membered ring.","custom_permalink":"science\/pyridine\/"},"categories":[116],"tags":[],"table_tags":[],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v17.9 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Pyridine (C5H5N) - Structure, Formula, Molecular Mass, Properties, and Applications<\/title>\n<meta name=\"description\" content=\"Pyridine is a colorless, flammable liquid with a distinctive, unpleasant odor. 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