Sulfuric Acid 3D Molecular Model — CAS 7664-93-9
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Free educational Sulfuric Acid model (H2O4S, CAS 7664-93-9) with an engraved element symbol on every atom.
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Sulfuric Acid (H2O4S, CAS 7664-93-9) — a free educational 3D molecular model for teachers and students, by MolGod.org. Each atom is labelled with its own engraved element symbol: no colour chart needed.
Ask the class whether Sulfuric Acid contains a ring. It does not: 7 atoms and 6 bonds (4 single and 2 double) make up an open structure. Students work from the model back to the formula H2O4S: the symbol count is 2 H + 4 O + 1 S, or 7 atoms all told. This molecule gives students these functional groups to identify: sulfonic acid group (-SO3H). Natural follow-up models: Methanesulfonic Acid (CAS 75-75-2) and dimethyl sulfone (CAS 67-71-0), close enough in structure for a spot-the-difference task.
MolGod.org builds and releases these models at no cost for chemistry teaching. Teachers: let students set the model beside a skeletal formula and list what the drawing omits.
Full record and more free models: https://molgod.org/molecule/7664-93-9/?utm_source=printables&utm_medium=referral&utm_campaign=edu-3d-models
Licence & provenance: https://molgod.org/licenses/stl/7664-93-9/
Same file on Wikimedia Commons: https://commons.wikimedia.org/wiki/File:Sulfuric_Acid-3D-molecular-model-engraved-CAS-7664-93-9.stl
A ball-and-stick model of Sulfuric 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: 103,656 triangles, closed (watertight) single solid. Coordinates in ångström (STL stores no unit) — scale the model deliberately in your slicer.
Names in other languages: Schwefelsäure (de); acide sulfurique (fr); acido solforico (it); zwavelzuur (nl); kwas siarkowy (pl); 硫酸 (zh).
Chemical identity
CAS Registry Number: 7664-93-9
Molecular formula: H2O4S
Molar mass: 98.08 g/mol (exact mass 97.96737971)
IUPAC name: sulfuric acid
MolGod ID: MG_679-274-140-44 (https://molgod.org/id/MG_679-274-140-44)
PubChem CID: 1118 (https://pubchem.ncbi.nlm.nih.gov/compound/1118)
Wikidata: Q4118 (https://www.wikidata.org/wiki/Q4118)
EC number: 231-639-5
ChemSpider ID: 1086
InChIKey: QAOWNCQODCNURD-UHFFFAOYSA-N
SMILES: OS(=O)(=O)O
Required attribution (CC BY-SA 4.0): "Sulfuric Acid 3D model by MolGod.org — https://molgod.org/molecule/7664-93-9/ — CC BY-SA 4.0"
Licence text: https://creativecommons.org/licenses/by-sa/4.0/