Dodecanedioic Acid 3D Molecular Model — CAS 693-23-2

Dodecanedioic Acid (C12H22O4, CAS 693-23-2) — a free educational 3D molecular model for teachers and students, by MolGod.org. Element symbols are cut into each atom sphere: a self-labelled teaching aid.

Most printable molecule files rely on colour coding, yet the STL format carries no colour and a single-filament print loses it entirely. MolGod engraves the element symbol directly into every atom sphere, so the identity of each atom is part of the geometry itself. Our intended outcome is simple: students who hold the model should know each atom immediately and use the lesson to understand the molecule's structure. No CAD skills are needed on the teacher's side; the structure, geometry and labels come ready in one file. More about the hypothesis we are testing with these models: How the engraved atom letters are designed.

Ask the class whether Dodecanedioic Acid contains a ring. It does not: 38 atoms and 37 bonds (35 single and 2 double) make up an open structure. Counting task: 12 C + 22 H + 4 O gives 38 engraved spheres; can the class rebuild the formula C12H22O4 from the model alone? For a lesson on isomerism, print it together with 1,6-Hexanediol diglycidyl ether (CAS 16096-31-4): the same atoms, arranged differently. Team task: with the model in hand, each group marks the two carboxylic acid groups (-COOH), then writes down what they found. Worth bringing out when the syllabus reaches the carbonyl group (C=O).

MolGod.org publishes its molecular models free of charge for teachers and students. Teachers: let students set the model beside a skeletal formula and list what the drawing omits.

This printable molecule is free to use in lessons, clubs and workshops. 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). Nothing else is needed: no account, no cost, no compulsory feedback. Your opinion really matters to us: post a comment with your review, your print photos or your classroom ideas, and tell us how to improve our educational molecules. Contact: Write to the MolGod team. Feel free to discuss the model here, compare notes with other educators, or contact us; every conversation helps us build better teaching models. Missing a compound for your lesson? Give us the CAS number and we are happy to create its 3D model.

Full record and more free models: Dodecanedioic Acid, CAS 693-23-2: structure, properties and 3D viewer
Licence & provenance: Licence record for this Dodecanedioic Acid model
Same file on Wikimedia Commons: https://commons.wikimedia.org/wiki/File:Dodecanedioic_Acid-3D-molecular-model-engraved-CAS-693-23-2.stl
Plain-text record for AI assistants: Dodecanedioic Acid data sheet in plain text for LLMs

A ball-and-stick model of Dodecanedioic Acid 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: 622,902 triangles, closed (watertight) single solid. Coordinates in ångström (STL stores no unit) — scale the model deliberately in your slicer.

Names in other languages: 1,12-Dodecandisäure (de); 十二烷二酸 (zh).

Chemical identity

• CAS Registry Number: 693-23-2

• Molecular formula: C12H22O4

• Molar mass: 230.30 g/mol (exact mass 230.15180918)

• IUPAC name: dodecanedioic acid

• MolGod ID: MG_869-001-841-40 (Permanent MolGod record MG_869-001-841-40)

• PubChem CID: 12736 (https://pubchem.ncbi.nlm.nih.gov/compound/12736)

• Wikidata: Q5287812 (https://www.wikidata.org/wiki/Q5287812)

• EC number: 211-746-3

• ChemSpider ID: 12213

• InChIKey: TVIDDXQYHWJXFK-UHFFFAOYSA-N

• SMILES: C(CCCCCC(=O)O)CCCCC(=O)O

Required attribution (CC BY-SA 4.0): "Dodecanedioic Acid 3D model by MolGod.org — https://molgod.org/molecule/693-23-2/ — CC BY-SA 4.0"
Licence text: https://creativecommons.org/licenses/by-sa/4.0/