Acetic Anhydride 3D Model — CAS 108-24-7

Acetic Anhydride (C4H6O3, CAS 108-24-7) — a free educational 3D molecular model for teachers and students, by MolGod.org. Every atom carries its engraved element symbol (C, H, O, N...), so no colour key is needed.

There is not a single ring in Acetic Anhydride; 13 atoms are linked by 12 bonds in an open chain (10 single and 2 double). Hand the model round and let students tally the engraved atoms: 4 C + 6 H + 3 O, 13 in total. On the printed model, students can point to the acid anhydride group (-CO-O-CO-). A good fit for lessons on the carbonyl group (C=O). Same formula, different structure: put it next to Propylene Carbonate (CAS 108-32-7) from the same collection and ask students what changed.

Free for education: MolGod.org publishes engraved molecular models for teachers, students and schools. Teachers: use it as a hands-on starter before drawing the structural formula on the board.

Full record and more free models: https://molgod.org/molecule/108-24-7/?utm_source=myminifactory&utm_medium=referral&utm_campaign=edu-3d-models Licence & provenance: https://molgod.org/licenses/stl/108-24-7/ Same file on Wikimedia Commons: https://commons.wikimedia.org/wiki/File:Acetic_Anhydride-3D-molecular-model-engraved-CAS-108-24-7.stl

A ball-and-stick model of Acetic Anhydride 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: 169,672 triangles, closed (watertight) single solid. Coordinates in ångström (STL stores no unit) — scale the model deliberately in your slicer.

Names in other languages: Essigsäureanhydrid (de); anhydride acétique (fr); anidride acetica (it); azijnzuuranhydride (nl); bezwodnik octowy (pl); 乙酸酐 (zh).

Chemical identity - CAS Registry Number: 108-24-7 - Molecular formula: C4H6O3 - Molar mass: 102.09 g/mol (exact mass 102.031694049) - IUPAC name: acetyl acetate - MolGod ID: MG_710-013-299-79 (https://molgod.org/id/MG_710-013-299-79) - PubChem CID: 7918 (https://pubchem.ncbi.nlm.nih.gov/compound/7918) - Wikidata: Q407775 (https://www.wikidata.org/wiki/Q407775) - EC number: 203-564-8 - ChemSpider ID: 7630 - InChIKey: WFDIJRYMOXRFFG-UHFFFAOYSA-N - SMILES: CC(=O)OC(=O)C

Required attribution (CC BY-SA 4.0): "Acetic Anhydride 3D model by MolGod.org — https://molgod.org/molecule/108-24-7/ — CC BY-SA 4.0" Licence text: https://creativecommons.org/licenses/by-sa/4.0/