{"id":306143,"date":"2024-10-19T20:58:10","date_gmt":"2024-10-19T20:58:10","guid":{"rendered":"https:\/\/pdfstandards.shop\/product\/uncategorized\/bs-iso-172572020\/"},"modified":"2024-10-25T18:33:28","modified_gmt":"2024-10-25T18:33:28","slug":"bs-iso-172572020","status":"publish","type":"product","link":"https:\/\/pdfstandards.shop\/product\/publishers\/bsi\/bs-iso-172572020\/","title":{"rendered":"BS ISO 17257:2020"},"content":{"rendered":"<p>This document provides a qualitative method for the identification of rubbers by their pyrolysis products using tandem gas-chromatography\/mass spectrometry.<\/p>\n<p>The method applies to rubbers in the raw state and to unvulcanized and vulcanized compounds. Compounds can be based on a single rubber or a blend of two or more rubbers. Where the level of a particular rubber in a blend is &lt;10&nbsp;%, detection and identification can be difficult.<\/p>\n<p>A non-restrictive list of rubbers is given in Clause&nbsp;4.<\/p>\n<h4>PDF Catalog<\/h4>\n<table border=\"1px\" class=\"des-table\">\n<tr>\n<th>PDF Pages<\/th>\n<th>PDF Title<\/th>\n<\/tr>\n<tr>\n<td><b>2<b><\/td>\n<td>undefined  <\/td>\n<\/tr>\n<tr>\n<td><b>7<b><\/td>\n<td>Foreword  <\/td>\n<\/tr>\n<tr>\n<td><b>9<b><\/td>\n<td>1 Scope <br \/> 2 Normative references <br \/> 3 Terms and definitions <br \/> 4 List of rubbers <br \/> 4.1 Group M <br \/> 4.1.1 Chloropolyethylene (CM) <br \/> 4.1.2 Chlorosulfonylpolyethylene (CSM) <br \/> 4.1.3 Ethylene-propylene copolymer (EPM) and Ethylene-propylene-diene terpolymer (EPDM)  <\/td>\n<\/tr>\n<tr>\n<td><b>10<b><\/td>\n<td>4.1.4 Fluorocarbon rubber having substituent fluoro, perfluoroalkyl, or perfluoroalkoxy groups on the polymer chain (FKM) <br \/> 4.2 Group O <br \/> 4.2.1 Homopolymer of epichlorhydrin (CO), copolymer of epichlorhydrin-ethylene oxide (ECO), terpolymer of epichlorhydrin-ethylene oxide-allyl glycidyl ether (GECO) <br \/> 4.3 Group Q <br \/> 4.3.1 Polysiloxanes (MQ, VMQ, PVMQ) <br \/> 4.4 Group R <br \/> 4.4.1 Butadiene rubber (BR) <br \/> 4.4.2 Chloroprene rubber (CR) <br \/> 4.4.3 Isobutene-isoprene rubber (IIR), chlorinated IIR (CIIR) and brominated IIR (BIIR) <br \/> 4.4.4 Natural rubber (NR) and synthetic isoprene rubber (IR) <br \/> 4.4.5 Acrylonitrile-butadiene rubber (NBR), hydrogenated NBR (HNBR) and carboxylated NBR (XNBR) <br \/> 4.4.6 Styrene-butadiene rubber (SBR) <br \/> 4.5 Rubber blends <br \/> 5 Principle  <\/td>\n<\/tr>\n<tr>\n<td><b>11<b><\/td>\n<td>6 Reagents <br \/> 7 Equipment  <\/td>\n<\/tr>\n<tr>\n<td><b>12<b><\/td>\n<td>8 Operating conditions <br \/> 8.1 General <br \/> 8.2 Gas chromatograph adjustment <br \/> 8.3 Extraction <br \/> 8.4 Test portion <br \/> 8.5 Pyrolysis <br \/> 9 Interpretation of results <br \/> 9.1 General  <\/td>\n<\/tr>\n<tr>\n<td><b>13<b><\/td>\n<td>9.2 Group M <br \/> 9.2.1 Chloropolyethylene (CM) and chlorosulfonylpolyethylene (CSM) <br \/> 9.2.2 Ethylene-propylene copolymer (EPM) and Ethylene-propylene-diene terpolymer (EPDM) <br \/> 9.2.3 Fluorocarbon rubber having substituent fluoro, perfluoroalkyl, or perfluoroalkoxy groups on the polymer chain (FKM) <br \/> 9.3 Group O <br \/> 9.3.1 Homopolymer of epichlorhydrin (CO), copolymer of epichlorhydrin-ethylene oxide (ECO), terpolymer of epichlorhydrin-ethylene oxide-allyl glycidyl ether (GECO) <br \/> 9.4 Group Q <br \/> 9.4.1 Polysiloxanes (MQ, VMQ, PVMQ) <br \/> 9.5 Group R <br \/> 9.5.1 Butadiene rubber (BR)  <\/td>\n<\/tr>\n<tr>\n<td><b>14<b><\/td>\n<td>9.5.2 Chloroprene rubber (CR) <br \/> 9.5.3 Isobutene-isoprene rubber (IIR), chlorinated IIR (CIIR) and brominated IIR (BIIR) <br \/> 9.5.4 Natural rubber (NR) or synthetic isoprene rubber (IR) <br \/> 9.5.5 Acrylonitrile-butadiene rubber (NBR), hydrogenated NBR (HNBR) and carboxylated NBR (XNBR) <br \/> 9.5.6 Styrene-butadiene rubber (SBR) <br \/> 10 Test report  <\/td>\n<\/tr>\n<tr>\n<td><b>16<b><\/td>\n<td>Annex A (informative)  Schematic diagram of the chromatographic equipment  <\/td>\n<\/tr>\n<tr>\n<td><b>17<b><\/td>\n<td>Annex B (informative)  Examples of operating conditions  <\/td>\n<\/tr>\n<tr>\n<td><b>18<b><\/td>\n<td>Annex C (informative)  Chromatogram examples  <\/td>\n<\/tr>\n<tr>\n<td><b>20<b><\/td>\n<td>Annex D (informative)  Chemical compounds identified in rubber pyrolysates  <\/td>\n<\/tr>\n<\/table>\n","protected":false},"excerpt":{"rendered":"<p><b>Rubber. Identification of polymers. Pyrolytic gas-chromatographic method using mass-spectrometric detection<\/b><\/p>\n<table class=\"shortdes-table\" style=\"width: 100%\" border=\"0\" cellspacing=\"0\" cellpadding=\"0\">\n<tbody>\n<tr>\n<td>Published By<\/td>\n<td>Publication Date<\/td>\n<td>Number of Pages<\/td>\n<\/tr>\n<tr>\n<td><a href=\"https:\/\/pdfstandards.shop\/product-category\/publishers\/bsi\/\"><b>BSI<\/b><\/a><\/td>\n<td>2020<\/td>\n<td>26<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n","protected":false},"featured_media":306148,"template":"","meta":{"rank_math_lock_modified_date":false,"ep_exclude_from_search":false},"product_cat":[2641],"product_tag":[],"class_list":{"0":"post-306143","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-bsi","8":"first","9":"instock","10":"sold-individually","11":"shipping-taxable","12":"purchasable","13":"product-type-simple"},"_links":{"self":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product\/306143","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/types\/product"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/media\/306148"}],"wp:attachment":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/media?parent=306143"}],"wp:term":[{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_cat?post=306143"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_tag?post=306143"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}