Decane 3D Molecular Model — CAS 124-18-5

Decane (C10H22, CAS 124-18-5) — a free educational 3D molecular model for teachers and students, by MolGod.org. Whatever the filament colour, each atom reads clearly thanks to its engraved symbol. On a typical printed molecule every sphere is the same anonymous ball, since the STL file cannot transmit the usual colour convention. MolGod adds what the STL format leaves out by engraving the element symbol into each atom of the printed structure. The purpose is educational: teachers get printable files built to shorten the step of 'which atom is this?' and leave more time for chemistry. The labelling that would otherwise be done with stickers or paint after printing is already part of the file. The research behind the idea, and how we plan to test it, is described at The story behind these engraved molecule models. There is not a single ring in Decane; 32 atoms are linked by 31 bonds in an open chain (all of them single). Students work from the model back to the formula C10H22: the symbol count is 10 C + 22 H, or 32 atoms all told. Students meeting saturated carbon chains and tetrahedral (sp3) carbon for the first time can hold an example in their hands. Worth printing alongside it: Hexane (CAS 110-54-3) and Pentane (CAS 109-66-0), structurally the nearest in the collection. Without any hydrogen-bond donor or acceptor (computed), it shows students what attraction between molecules looks like when hydrogen bonding is absent. Free for education: MolGod.org publishes engraved molecular models for teachers, students and schools. Teachers: let students set the model beside a skeletal formula and list what the drawing omits. Print it, hand it round and build a lesson around it. Publishing pictures, materials or remixes of it? Under CC BY-SA 4.0, name "MolGod.org" as the author, link back to the original and to the licence, mark your changes and keep remixes under the same terms. A ready-made attribution is included below. Nothing else is needed: no account, no cost, no compulsory feedback. Your comments decide what we improve next, from engraving depth to which molecules we add. Leave a review below or contact us at Ask us for another molecule. Join the conversation: comments, questions and classroom stories are all welcome, and you can always contact us for anything more. Teaching a compound we have not modelled yet? Get in touch and we will create a 3D model especially for your class. Full record and more free models: Molecule page for Decane (CAS 124-18-5) Licence & provenance: Where this Decane model comes from and how you may use it Same file on Wikimedia Commons: https://commons.wikimedia.org/wiki/File:Decane-3D-molecular-model-engraved-CAS-124-18-5.stl Plain-text record for AI assistants: Machine-readable Decane record (CAS 124-18-5) A ball-and-stick model of Decane with each element symbol recessed into its atom sphere, generated by MolGod.org from a PubChem-computed 3D conformer (not an experimental crystal structure); atomic coordinates and connectivity are unchanged. STL mesh: 338,894 triangles, closed (watertight) single solid. Coordinates in ångström (STL stores no unit) — scale the model deliberately in your slicer. Names in other languages: Decan (de); décane (fr); decano (it); decaan (nl); dekan (pl); 癸烷 (zh). Chemical identity - CAS Registry Number: 124-18-5 - Molecular formula: C10H22 - Molar mass: 142.28 g/mol (exact mass 142.172150702) - IUPAC name: decane - MolGod ID: MG_878-738-969-12 (Decane under MolGod ID MG_878-738-969-12) - PubChem CID: 15600 (https://pubchem.ncbi.nlm.nih.gov/compound/15600) - Wikidata: Q150717 (https://www.wikidata.org/wiki/Q150717) - EC number: 204-686-4 - ChemSpider ID: 14840 - InChIKey: DIOQZVSQGTUSAI-UHFFFAOYSA-N - SMILES: CCCCCCCCCC

Required attribution (CC BY-SA 4.0): "Decane 3D model by MolGod.org — https://molgod.org/molecule/124-18-5/ — CC BY-SA 4.0" Licence text: https://creativecommons.org/licenses/by-sa/4.0/