Diethyl Phthalate, C₁₂H₁₄O₄, 84-66-2

Diethyl Phthalate (C12H14O4, CAS 84-66-2) — 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. Colour keys break down in 3D printing, because an STL holds geometry alone and most classroom printers use one filament at a time. MolGod adds what the STL format leaves out by engraving the element symbol into each atom of the printed structure. The aim of this scientific education project is to help students identify the atoms of a molecule faster and so grasp its chemistry and 3D geometry sooner. No CAD skills are needed on the teacher's side; the structure, geometry and labels come ready in one file. Read why we engrave the atoms, and which studies inspired the project: The story behind these engraved molecule models. At its heart, Diethyl Phthalate is built around one aromatic 6-membered ring. The model shows 30 bonds: 22 single, 2 double and 6 aromatic, drawn in Kekulé form. Use the engraved letters like a register: call out each element and tick it off until the class reaches 12 C + 14 H + 4 O (30 atoms altogether). Topics it supports in class: aromaticity and delocalised electrons, as well as the carbonyl group (C=O). Place it beside Ethyl benzoate (CAS 93-89-0) and Dibutyl Phthalate (CAS 84-74-2) and ask students which features are shared and which are not. Before any theory, let students hunt on the model for the two ester groups (-COO-). MolGod.org publishes its molecular models free of charge for teachers and students. Teachers: hand out printed copies and ask students to rebuild the structural formula from the model. Free to print and free to bring into any classroom. When you publish a photo, a worksheet or a remix, CC BY-SA 4.0 requires you to credit "MolGod.org" as the author of the model, link to the original and to the licence, indicate any changes and share remixes under the same licence (the ready attribution line is below). No sign-up, no fees and no review required. Printed it? Used it in class? Please share a quick review in the comments and suggest how we can make our molecules even more useful for learning. You can also contact us at Ask us for another molecule. Have an idea for a lesson built around this molecule? Share it in the comments so other teachers can use it too. Looking for another compound? We gladly create an engraved 3D model for any CAS number you send us. Full record and more free models: Molecule page for Diethyl Phthalate (CAS 84-66-2) Licence & provenance: Where this Diethyl Phthalate model comes from and how you may use it Same file on Wikimedia Commons: https://commons.wikimedia.org/wiki/File:Diethyl_Phthalate-3D-molecular-model-engraved-CAS-84-66-2.stl Plain-text record for AI assistants: Machine-readable Diethyl Phthalate record (CAS 84-66-2) A ball-and-stick model of Diethyl Phthalate 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: 382,952 triangles, closed (watertight) single solid. Coordinates in ångström (STL stores no unit) — scale the model deliberately in your slicer. Names in other languages: Diethylphthalat (de); phtalate de diéthyle (fr); diethylftalaat (nl); ftalan dietylu (pl); 鄰苯二甲酸二乙酯 (zh). Chemical identity - CAS Registry Number: 84-66-2 - Molecular formula: C12H14O4 - Molar mass: 222.24 g/mol (exact mass 222.08920892) - IUPAC name: diethyl benzene-1,2-dicarboxylate - MolGod ID: MG_318-205-460-03 (Diethyl Phthalate under MolGod ID MG_318-205-460-03) - PubChem CID: 6781 (https://pubchem.ncbi.nlm.nih.gov/compound/6781) - Wikidata: Q419811 (https://www.wikidata.org/wiki/Q419811) - EC number: 201-550-6 - ChemSpider ID: 13837303 - InChIKey: FLKPEMZONWLCSK-UHFFFAOYSA-N - SMILES: CCOC(=O)C1=CC=CC=C1C(=O)OCC

Required attribution (CC BY-SA 4.0): "Diethyl Phthalate 3D model by MolGod.org — https://molgod.org/molecule/84-66-2/ — CC BY-SA 4.0" Licence text: https://creativecommons.org/licenses/by-sa/4.0/