{"term":{"id":"00729","title":"branch unit","longtitle":"IUPAC Gold Book - branch unit","doi":"10.1351\/goldbook.B00729","code":"B00729","status":"current","also defines":"<em>also defines<\/em>: $f$-functional branch unit","definitions":[{"id":1,"text":"A constitutional unit containing a branch point.","notes":{"1":"A branch unit from which \\(f\\) linear chains emanate may be termed an f-functional branch unit, e.g. five-functional branch unit. Alternatively, the terms trifunctional, tetrafunctional, pentafunctional, etc. may be used, e.g. pentafunctional branch unit."},"contexts":[],"links":[{"term":"branch point","url":"https:\/\/goldbook.iupac.org\/\/terms\/view\/B00728"},{"term":"constitutional unit","url":"https:\/\/goldbook.iupac.org\/\/terms\/view\/C01288"}],"sources":["PAC, 1996, 68, 2287. 'Glossary of basic terms in polymer science (IUPAC Recommendations 1996)' on page 2297 (https:\/\/doi.org\/10.1351\/pac199668122287)"]}],"altoutputs":{"html":"https:\/\/goldbook.iupac.org\/terms\/view\/B00729\/html","xml":"https:\/\/goldbook.iupac.org\/terms\/view\/B00729\/xml","plain":"https:\/\/goldbook.iupac.org\/terms\/view\/B00729\/plain"},"citation":"Citation: 'branch unit' in IUPAC Compendium of Chemical Terminology, 5th ed. International Union of Pure and Applied Chemistry; 2025. Online version 5.0.0, 2025. 10.1351\/goldbook.B00729","license":"The IUPAC Gold Book is licensed under Creative Commons Attribution-ShareAlike CC BY-SA 4.0 International (https:\/\/creativecommons.org\/licenses\/by-sa\/4.0\/) for individual terms.","collection":"If you are interested in licensing the Gold Book for commercial use, please contact the IUPAC Executive Director at executivedirector@iupac.org .","disclaimer":"The International Union of Pure and Applied Chemistry (IUPAC) is continuously reviewing and, where needed, updating terms in the Compendium of Chemical Terminology (the IUPAC Gold Book). Users of these terms are encouraged to include the version of a term with its use and to check regularly for updates to term definitions that you are using.","accessed":"2026-04-18T15:01:45+00:00"}}