{"id":43877,"date":"2020-10-28T00:00:00","date_gmt":"2020-10-28T00:00:00","guid":{"rendered":"https:\/\/discover.restek.com\/uncategorized\/analyze-hydrocarbons-on-opn-res-sil-c-bonded-gc-packing\/"},"modified":"2026-01-03T18:01:10","modified_gmt":"2026-01-03T18:01:10","slug":"analyze-hydrocarbons-on-opn-res-sil-c-bonded-gc-packing","status":"publish","type":"post","link":"https:\/\/discover.restek.com\/de\/articles\/pcar3244\/analyze-hydrocarbons-on-opn-res-sil-c-bonded-gc-packing","title":{"rendered":"Analyze Hydrocarbons on OPN\/Res-Sil C Bonded GC Packing"},"content":{"rendered":"\n<ul class=\"wp-block-list\">\n<li>Unique separations of saturated and unsaturated hydrocarbons.<\/li>\n\n\n\n<li>Innovative bonding chemistry for batch-to-batch reproducibility, excellent thermal stability, and long life.<\/li>\n\n\n\n<li>Other bonded phases available.<\/li>\n<\/ul>\n\n\n\n<p>For years, Porasil C and Porasil B, modified with covalently attached liquid phases such as OPN (cyanopropyl) or&nbsp;<em>n<\/em>-octane functional groups, offered important advantages, relative to conventional GC packings, in analyses of C1-C4 hydrocarbons: faster separations, higher thermal stability, shorter conditioning times, and longer lifetimes. Porasil C \/ Porasil B products were discontinued in the 1980s, however, and inventories have been depleted, forcing those that used these packings to search for comparable materials.<\/p>\n\n\n\n<p>Restek chemists solved the problem by developing&nbsp;Res-Sil C and Res-Sil B bonded packings. These packings afford all of the advantages of the Porasil C and Porasil B materials, with the added advantage of consistent batch-to-batch performance &#8211; and they are readily available for immediate delivery. Compared to diatomaceous earth media, Res-Sil C has a small surface area, good inertness, low friability, and less reactivity.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Unique Selectivity for Process GC and High-Speed Analysis<\/h2>\n\n\n\n<p>Speed of analysis is crucial in process GC, and in laboratory gas analyzers in which multiple columns and valve switching are used to separate complex gas mixtures. Res-Sil C bonded packings are ideal for resolving the difficult-to-separate saturated and unsaturated C4 hydrocarbons under these demanding conditions. Figure 1 illustrates the unique selectivity of OPN on Res-Sil C packing for eluting cis-2-butene before 1,3-butadiene. When used in series with other columns, this unique material provides petroleum and petrochemical method developers with a powerful tool for fast determination of C1-C4 hydrocarbons [1].<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Stringent QA Assures Batch-to-Batch Consistency<\/h2>\n\n\n\n<p>Historically, one of the problems with bonded phases on Porasil media was batch-to-batch variations in the amount of liquid stationary phase incorporated on the silica support. Through our new synthesis pathways, we precisely control the amount of bonded liquid phase on Res-Sil C in every batch of packing, assuring reproducible retention times and separations. Each batch of packing is tested with a complex mixture of hydrocarbons, to confirm it meets demanding retention time and retention index specifications. We evaluate column bleed at the recommended maximum temperature, 150 \u00b0C, to ensure that there are no retention shifts or elevated baselines.<\/p>\n\n\n\n<p>In addition to&nbsp;<a href=\"https:\/\/www.restek.com\/p\/80437-800\" target=\"_blank\" rel=\"noopener\">OPN on Res-Sil C<\/a>&nbsp;packing, we bond&nbsp;<a href=\"https:\/\/www.restek.com\/p\/80436-800\" target=\"_blank\" rel=\"noopener\"><em>n<\/em>-octane and Carbowax 1540 phases to Res-Sil C<\/a>. Each of these packings offers a conditioning time of less than 30 minutes, low bleed, long lifetime, and consistent batch-to-batch reproducibility. We test every batch of every Restek bonded phase packing for bleed, efficiency, retention index, and retention time reproducibility. In addition, we make a broad range of&nbsp;<a href=\"https:\/\/www.restek.com\/c\/1183\" target=\"_blank\" rel=\"noopener\">packed&nbsp;and&nbsp;micropacked columns<\/a>&nbsp;in specially-deactivated&nbsp;Silcosteel tubing, for superior inertness and efficiency.<\/p>\n\n\n\n<p>If you have been looking for a replacement for a Porasil C or Porasil B packing, we invite you to <a href=\"https:\/\/www.restek.com\/contact-us\" data-type=\"link\" data-id=\"https:\/\/www.restek.com\/contact-us\" target=\"_blank\" rel=\"noopener\">contact us<\/a>. Your search should end here.<\/p>\n\n\n<div class=\"wp-block-custom-chromatogram-article-top\"><div class=\"chromatogram-article-placeholder\"><div class=\"figure-heading\"><strong>Figure 1:<\/strong>\u00a0OPN on Res-Sil C packing has unique selectivity for\u00a0<em>cis<\/em>-2-butene and 1,3-butadiene.<\/div><div class='chromatogram-article-inner-full'><div class=\"chromatogram-article-inner\">\n<div class=\"wp-block-custom-chromatogram-article\"><div class=\"wp-block-custom-chromatogram-article\"><div class=\"chromatogram-image regular-image\"><img decoding=\"async\" src=\"https:\/\/ez.restek.com\/images\/cgram\/gc_pc00373.png\" alt=\"Refinery Gas Using OPN on Res-Sil C Packing\" title=\"-\"><\/div><p class=\"article-id\" style=\"text-align:center\"> GC_PC00373<\/p><div class=\"chromatogram-peaks\"><h4>Peaks<\/h4><table class=\"peaks col-lg-6 col-12 peak-50\">\n<thead><tr><th><\/th><th style=\"text-align: left;width: 75px\">Peaks<\/th><th style=\"text-align: center;width: 50px\">Retention Indices<\/th><\/tr><\/thead>\n<tbody><tr><td class=\"num\">1.<\/td><td class=\"cmpd\"><a class=\"cmpd_link\" title=\"View compound information for Methane\" href=\"https:\/\/ez.restek.com\/compound\/view\/en\/74-82-8\/Methane\" target=\"_blank\" rel=\"noopener\">Methane<\/a><\/td><td class=\"oth\">100<\/td><\/tr>\n<tr><td class=\"num\">2.<\/td><td class=\"cmpd\">Ethane\/ethylene<\/td><td class=\"oth\">200<\/td><\/tr>\n<tr><td class=\"num\">3.<\/td><td class=\"cmpd\"><a class=\"cmpd_link\" title=\"View compound information for Acetylene\" href=\"https:\/\/ez.restek.com\/compound\/view\/en\/74-86-2\/Acetylene\" target=\"_blank\" rel=\"noopener\">Acetylene<\/a><\/td><td class=\"oth\">260<\/td><\/tr>\n<tr><td class=\"num\">4.<\/td><td class=\"cmpd\"><a class=\"cmpd_link\" title=\"View compound information for Propane\" href=\"https:\/\/ez.restek.com\/compound\/view\/en\/74-98-6\/Propane\" target=\"_blank\" rel=\"noopener\">Propane<\/a><\/td><td class=\"oth\">300<\/td><\/tr>\n<tr><td class=\"num\">5.<\/td><td class=\"cmpd\"><a class=\"cmpd_link\" title=\"View compound information for Propylene\" href=\"https:\/\/ez.restek.com\/compound\/view\/en\/115-07-1\/Propylene\" target=\"_blank\" rel=\"noopener\">Propylene<\/a><\/td><td class=\"oth\">321<\/td><\/tr>\n<tr><td class=\"num\">6.<\/td><td class=\"cmpd\"><a class=\"cmpd_link\" title=\"View compound information for Propadiene\" href=\"https:\/\/ez.restek.com\/compound\/view\/en\/463-49-0\/Propadiene\" target=\"_blank\" rel=\"noopener\">Propadiene<\/a><\/td><td class=\"oth\">345<\/td><\/tr>\n<tr><td class=\"num\">7.<\/td><td class=\"cmpd\"><a class=\"cmpd_link\" title=\"View compound information for Isobutane\" href=\"https:\/\/ez.restek.com\/compound\/view\/en\/75-28-5\/Isobutane\" target=\"_blank\" rel=\"noopener\">Isobutane<\/a><\/td><td class=\"oth\">386<\/td><\/tr>\n<tr><td class=\"num\">8.<\/td><td class=\"cmpd\"><a class=\"cmpd_link\" title=\"View compound information for Butane\" href=\"https:\/\/ez.restek.com\/compound\/view\/en\/106-97-8\/Butane\" target=\"_blank\" rel=\"noopener\">Butane<\/a><\/td><td class=\"oth\">400<\/td><\/tr>\n<tr><td class=\"num\">9.<\/td><td class=\"cmpd\"><a class=\"cmpd_link\" title=\"View compound information for 1-Butene\" href=\"https:\/\/ez.restek.com\/compound\/view\/en\/106-98-9\/1-Butene\" target=\"_blank\" rel=\"noopener\">1-Butene<\/a><\/td><td class=\"oth\">422<\/td><\/tr>\n<\/tbody><\/table>\n<table class=\"peaks col-lg-6 col-12 peak-50\"><thead><tr><th><\/th><th style=\"text-align: left;width: 75px\">Peaks<\/th><th style=\"text-align: center;width: 50px\">Retention Indices<\/th><\/tr><\/thead><tbody>\n<tr><td class=\"num\">10.<\/td><td class=\"cmpd\">Isobutylene\/trans-2-butene<\/td><td class=\"oth\">434<\/td><\/tr>\n<tr><td class=\"num\">11.<\/td><td class=\"cmpd\"><a class=\"cmpd_link\" title=\"View compound information for cis-2-Butene\" href=\"https:\/\/ez.restek.com\/compound\/view\/en\/590-18-1\/cis-2-Butene\" target=\"_blank\" rel=\"noopener\">cis-2-Butene<\/a><\/td><td class=\"oth\">443<\/td><\/tr>\n<tr><td class=\"num\">12.<\/td><td class=\"cmpd\"><a class=\"cmpd_link\" title=\"View compound information for 1,3-Butadiene\" href=\"https:\/\/ez.restek.com\/compound\/view\/en\/106-99-0\/1,3-Butadiene\" target=\"_blank\" rel=\"noopener\">1,3-Butadiene<\/a><\/td><td class=\"oth\">454<\/td><\/tr>\n<tr><td class=\"num\">13.<\/td><td class=\"cmpd\"><a class=\"cmpd_link\" title=\"View compound information for Isopentane\" href=\"https:\/\/ez.restek.com\/compound\/view\/en\/78-78-4\/Isopentane\" target=\"_blank\" rel=\"noopener\">Isopentane<\/a><\/td><td class=\"oth\">488<\/td><\/tr>\n<tr><td class=\"num\">14.<\/td><td class=\"cmpd\">Pentane\/3-methyl-1-butene<\/td><td class=\"oth\">503<\/td><\/tr>\n<tr><td class=\"num\">15.<\/td><td class=\"cmpd\"><a class=\"cmpd_link\" title=\"View compound information for 1-Pentene\" href=\"https:\/\/ez.restek.com\/compound\/view\/en\/109-67-1\/1-Pentene\" target=\"_blank\" rel=\"noopener\">1-Pentene<\/a><\/td><td class=\"oth\">522<\/td><\/tr>\n<tr><td class=\"num\">16.<\/td><td class=\"cmpd\"><a class=\"cmpd_link\" title=\"View compound information for trans-2-Pentene\" href=\"https:\/\/ez.restek.com\/compound\/view\/en\/646-04-8\/trans-2-Pentene\" target=\"_blank\" rel=\"noopener\">trans-2-Pentene<\/a><\/td><td class=\"oth\">533<\/td><\/tr>\n<tr><td class=\"num\">17.<\/td><td class=\"cmpd\"><a class=\"cmpd_link\" title=\"View compound information for cis-2-Pentene\" href=\"https:\/\/ez.restek.com\/compound\/view\/en\/627-20-3\/cis-2-Pentene\" target=\"_blank\" rel=\"noopener\">cis-2-Pentene<\/a><\/td><td class=\"oth\">540<\/td><\/tr>\n<tr><td class=\"num\">18.<\/td><td class=\"cmpd\"><a class=\"cmpd_link\" title=\"View compound information for 2-Methyl-2-butene\" href=\"https:\/\/ez.restek.com\/compound\/view\/en\/513-35-9\/2-Methyl-2-butene\" target=\"_blank\" rel=\"noopener\">2-Methyl-2-butene<\/a><\/td><td class=\"oth\">549<\/td><\/tr>\n<\/tbody><\/table><\/div><div class=\"chromatogram-conditions\"><h4>Conditions<\/h4><div class=\"conditions-container container-fluid\"><div class=\"row\"><table class=\"conditions col-lg-6 col-12\"><tr><th class=\"conditions_header\" scope=\"row\">Column<\/th><td>OPN, 80\/100 mesh on Res-Sil C packing, SilcoSmooth tubing, 12 ft., 1\/8 in. OD, 2 mm ID (<a target=\"_blank\" href=\"https:\/\/www.restek.com\/p\/80437-800?utm_source=chromatograms&amp;utm_medium=link&amp;utm_campaign=GC_PC00373\" rel=\"noopener\">cat.# 80437-800<\/a>)<\/td><\/tr><tr class=\"cgram_header_row\"><th class=\"conditions_header\" scope=\"row\">Standard\/Sample<\/th><td>Refinery gas<\/td><\/tr>\n<tr><th class=\"sub conditions_header\" scope=\"row\">Conc.:<\/th><td>0.1-6  absolute mole %<\/td><\/tr><tr class=\"cgram_header_row\"><th class=\"conditions_header\" scope=\"row\">Injection<\/th><td><\/td><\/tr><tr><th class=\"sub conditions_header\" scope=\"row\">Inj. Vol.:<\/th><td>20 \u00b5L packed on-column<\/td><\/tr><tr><th class=\"sub conditions_header\" scope=\"row\">Inj. Temp.:<\/th><td>200 \u00b0C<\/td><\/tr><tr class=\"cgram_header_row\"><th class=\"conditions_header\" scope=\"row\" colspan=\"2\">Oven<\/td><\/tr><tr><th class=\"sub conditions_header\" scope=\"row\">Oven Temp.:<\/th><td>50 &#176;C<\/td><\/tr><tr class=\"cgram_header_row\"><th class=\"conditions_header\" scope=\"row\">Carrier Gas<\/th><td>He, constant flow<\/td><\/tr><tr><th class=\"sub conditions_header\" scope=\"row\">Flow Rate:<\/th><td>30 mL\/min<\/td><\/tr><\/table><table class=\"conditions col-lg-6 col-12\"><tr><th class=\"conditions_header\" scope=\"row\">Detector<\/th><td>FID @ 200 \u00b0C<\/td><\/tr><tr class=\"cgram_header_row\"><th class=\"conditions_header\" scope=\"row\">Acknowledgement<\/th><td>Standard courtesy of AC Analytical Controls<\/td><\/tr><\/table><\/div><\/div><\/div><div class=\"chromatogram-pdf-link\"><a href=\"https:\/\/ez.restek.com\/images\/cgram\/gc_pc00373.pdf\" target=\"_blank\" rel=\"noopener noreferrer\"><svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"18\" height=\"18\" viewBox=\"0 0 18 18\"><g data-name=\"Group 2996\"><path data-name=\"Rectangle 1246\" d=\"M0 0h18v18H0z\" style=\"fill: none;\"><\/path><\/g><g data-name=\"Group 2997\"><path data-name=\"Path 729\" d=\"M13.412 11.4v2.017H5.345V11.4H4v2.017a1.349 1.349 0 0 0 1.345 1.345h8.068a1.349 1.349 0 0 0 1.345-1.345V11.4zm-.672-2.694-.948-.948-1.741 1.735V4H8.706v5.493L6.965 7.758l-.948.948 3.361 3.361z\" transform=\"translate(-.437 -.414)\" style=\"fill: rgb(13, 123, 196);\"><\/path><\/g><\/svg>Download PDF<\/a><\/div><\/div><\/div>\n<\/div><\/div><\/div>\n\n\n<div style=\"height:20px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<h2 class=\"wp-block-heading\">References<\/h2>\n\n\n\n<ol class=\"wp-block-list\">\n<li>Saha, N.C., S.K. Jain, and R.K. Dua.&nbsp;<em>J. Chromatogr. Sci.<\/em>&nbsp;16: 323-328 (1978).&nbsp;<em>Reference not available from Restek.<\/em><\/li>\n<\/ol>\n\n\n\n<div style=\"height:50px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n        <div class=\"cpb\">\n            <h3 class=\"cpb-heading\">Products Mentioned<\/h3>\n            <hr class=\"cpb-heading-underline\" \/>\n            <div class=\"cpb-list\">\n                                    <div class=\"cpb-item\">\n                        <div class=\"cpb-col cpb-col--left\">\n                            <a class=\"cpb-catalog\" target=\"_blank\" rel=\"noopener noreferrer\" href=\"https:\/\/de.restek.com\/p\/80437-800\">                                Catalog No. 80437-800                            <\/a>                        <\/div>\n                        <div class=\"cpb-col cpb-col--middle\">\n                            <div class=\"cpb-title\">Gepackte GC S\u00e4ule, OPN on Res-Sil C, 80\/100, 3.7 m, 2 mm ID, 1\/8&quot; AD, allgemeine Konfiguration<\/div>\n                        <\/div>\n                        <div class=\"cpb-col cpb-col--right\">\n                                                            <a class=\"cpb-view-btn\" target=\"_blank\" rel=\"noopener noreferrer\" href=\"https:\/\/de.restek.com\/p\/80437-800\">Produkt anzeigen<\/a>\n                                                    <\/div>\n                    <\/div>\n                                    <div class=\"cpb-item\">\n                        <div class=\"cpb-col cpb-col--left\">\n                            <a class=\"cpb-catalog\" target=\"_blank\" rel=\"noopener noreferrer\" href=\"https:\/\/de.restek.com\/p\/80436-800\">                                Catalog No. 80436-800                            <\/a>                        <\/div>\n                        <div class=\"cpb-col cpb-col--middle\">\n                            <div class=\"cpb-title\">Gepackte GC S\u00e4ule, n-Octan auf Res-Sil C, 80\/100, 6.1 m, 2 mm ID, 1\/8&quot; AD<\/div>\n                        <\/div>\n                        <div class=\"cpb-col cpb-col--right\">\n                                                            <a class=\"cpb-view-btn\" target=\"_blank\" rel=\"noopener noreferrer\" href=\"https:\/\/de.restek.com\/p\/80436-800\">Produkt anzeigen<\/a>\n                                                    <\/div>\n                    <\/div>\n                            <\/div>\n        <\/div>\n        \n\n\n<div style=\"height:100px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n","protected":false},"excerpt":{"rendered":"<p>In process GC analyses, this material offers unique selectivity for the difficult-to-separate saturated and unsaturated C4 hydrocarbons, eluting cis-2-butene before 1,3-butadiene. Innovative bonding chemistry assures batch-to-batch reproducibility, excellent thermal stability, and long column life.<\/p>\n","protected":false},"author":3,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"_kad_blocks_custom_css":"","_kad_blocks_head_custom_js":"","_kad_blocks_body_custom_js":"","_kad_blocks_footer_custom_js":"","_kadence_starter_templates_imported_post":false,"_kad_post_transparent":"","_kad_post_title":"","_kad_post_layout":"","_kad_post_sidebar_id":"","_kad_post_content_style":"","_kad_post_vertical_padding":"","_kad_post_feature":"","_kad_post_feature_position":"","_kad_post_header":false,"_kad_post_footer":false,"footnotes":""},"categories":[7],"tags":[],"industries-application":[2157,2159],"post-badge":[],"resource-type":[],"product-library":[2372,2390,2384],"resource-technique":[2294],"ppma_author":[620],"class_list":["post-43877","post","type-post","status-publish","format-standard","hentry","category-articles","industries-application-energy","industries-application-hydrocarbon-gases","product-library-gas-chromatography-products","product-library-gas-purification-generators","product-library-gc-columns","resource-technique-gas-chromatography-gc"],"acf":[],"taxonomy_info":{"category":[{"value":7,"label":"Articles"}],"industries-application":[{"value":2157,"label":"Energy"},{"value":2159,"label":"Hydrocarbon Gases"}],"product-library":[{"value":2372,"label":"Gas Chromatography Products"},{"value":2390,"label":"Gas Purification &amp; Generators"},{"value":2384,"label":"GC Columns"}],"resource-technique":[{"value":2294,"label":"Gas Chromatography (GC)"}]},"featured_image_src_large":false,"author_info":{"display_name":"Audrey Crater","author_link":"https:\/\/discover.restek.com\/de\/author\/audrey-craterrestek-com\/"},"comment_info":0,"category_info":[{"term_id":7,"name":"Articles","slug":"articles","term_group":0,"term_taxonomy_id":7,"taxonomy":"category","description":"","parent":0,"count":469,"filter":"raw","cat_ID":7,"category_count":469,"category_description":"","cat_name":"Articles","category_nicename":"articles","category_parent":0}],"tag_info":false,"authors":[{"term_id":620,"user_id":0,"is_guest":1,"slug":"barry-burger","display_name":"Barry Burger","avatar_url":"https:\/\/secure.gravatar.com\/avatar\/?s=96&d=mm&r=g","0":null,"1":"","2":"","3":"","4":"","5":"","6":"","7":"","8":""}],"_links":{"self":[{"href":"https:\/\/discover.restek.com\/de\/wp-json\/wp\/v2\/posts\/43877","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/discover.restek.com\/de\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/discover.restek.com\/de\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/discover.restek.com\/de\/wp-json\/wp\/v2\/users\/3"}],"replies":[{"embeddable":true,"href":"https:\/\/discover.restek.com\/de\/wp-json\/wp\/v2\/comments?post=43877"}],"version-history":[{"count":5,"href":"https:\/\/discover.restek.com\/de\/wp-json\/wp\/v2\/posts\/43877\/revisions"}],"predecessor-version":[{"id":79449,"href":"https:\/\/discover.restek.com\/de\/wp-json\/wp\/v2\/posts\/43877\/revisions\/79449"}],"wp:attachment":[{"href":"https:\/\/discover.restek.com\/de\/wp-json\/wp\/v2\/media?parent=43877"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/discover.restek.com\/de\/wp-json\/wp\/v2\/categories?post=43877"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/discover.restek.com\/de\/wp-json\/wp\/v2\/tags?post=43877"},{"taxonomy":"industries-application","embeddable":true,"href":"https:\/\/discover.restek.com\/de\/wp-json\/wp\/v2\/industries-application?post=43877"},{"taxonomy":"post-badge","embeddable":true,"href":"https:\/\/discover.restek.com\/de\/wp-json\/wp\/v2\/post-badge?post=43877"},{"taxonomy":"resource-type","embeddable":true,"href":"https:\/\/discover.restek.com\/de\/wp-json\/wp\/v2\/resource-type?post=43877"},{"taxonomy":"product-library","embeddable":true,"href":"https:\/\/discover.restek.com\/de\/wp-json\/wp\/v2\/product-library?post=43877"},{"taxonomy":"resource-technique","embeddable":true,"href":"https:\/\/discover.restek.com\/de\/wp-json\/wp\/v2\/resource-technique?post=43877"},{"taxonomy":"author","embeddable":true,"href":"https:\/\/discover.restek.com\/de\/wp-json\/wp\/v2\/ppma_author?post=43877"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}