Terephthalic Acid

CAS 100-21-0  ·  C8H6O4  ·  MW 166.13 g/mol

Full record: Terephthalic Acid — Safety Data Sheet →

Loading molecule...
3D model Terephthalic Acid, CAS 100-21-0, molecular formula C8H6O4, molar mass 166.13 g/mol

Model views

  • Terephthalic Acid (CAS 100-21-0) – ball-and-stick 3D model, MolGod Viewer
    ball-and-stick 3D model
  • Terephthalic Acid (CAS 100-21-0) – skeletal 3D model, MolGod Viewer
    skeletal 3D model
  • space-filling 3D model – rotation animation
  • Terephthalic Acid (CAS 100-21-0) – 2D structure, MolGod Viewer
    2D structure

© 2026 MolGod.org. All rights reserved. · Image rights

🖨️ 3D print model & licenseMolGod_Print3D_1
Terephthalic Acid (CAS 100-21-0), C8H6O4 - 3D ball-and-stick molecular model, engraved element symbols (C H O), MolGod STL previewDownload image

MG_864-993-681-12 · engraved · 259,018 △ · 12 MB · SHA-256 43de579386ce2b5b

Download 3D model: Terephthalic Acid, C8H6O4, CAS 100-21-0 · ENGRAVED (C, H, O) · 12 MB

Terephthalic Acid (CAS 100-21-0), C8H6O4 - 3D ball-and-stick molecular model, MolGod STL previewDownload image

MG_864-993-681-12 · normal · 7,968 △ · 389 KB · SHA-256 a208abed27d6d638

Download 3D model: Terephthalic Acid, C8H6O4, CAS 100-21-0 · NORMAL · 389 KB

License & provenance ↓

⚠️ The MolGod.org name and logo, including the raised logo on the base, are our trademark. The CC BY-SA 4.0 licence does not cover trademarks (section 2(b)(2)). Do not use the MolGod.org logo to brand your own products, in advertising, or in any way that suggests our endorsement without our written permission.

About Terephthalic Acid

Terephthalic Acid is a chemical compound registered under number CAS 100-21-0, with the molecular formula C8H6O4, and a molar mass of 166.13 g/mol.

The molecule contains 18 atoms connected by 18 chemical bonds. The full systematic IUPAC name of this compound is terephthalic acid. The interactive 3D model above lets you view the spatial arrangement of the atoms — you can rotate it with the mouse, zoom with the scroll wheel, and switch between skeletal / Ball & Stick / Space Fill visualization modes.

In terms of physicochemical properties, the partition coefficient logP = 2 (positive value, a lipophilic compound), polar surface area PSA = 74.6 Ų, 2 donors and 4 hydrogen bond acceptors. These parameters are key when assessing bioavailability and interaction with biomolecules.

Chemical data for this compound comes from PubChem (NIH NLM NCBI), one of the world's largest chemical databases. All information is updated automatically and enriched with GHS hazard statement translations compliant with the CLP Regulation (EC 1272/2008). The interactive 3D model and the viewer images are protected by copyright (© MolGod.org) — terms of use: molgod.org/copyright/.

Physicochemical properties
Molecular formulaC8H6O4
Molar mass166.13 g/mol
IUPACterephthalic acid
SMILESC1=CC(=CC=C1C(=O)O)C(=O)O
InChIKeyKKEYFWRCBNTPAC-UHFFFAOYSA-N
logP (XLogP3)2
PSA74.6 Ų
HBD / HBA2 / 4
PubChem CIDCID 7489 ↗
GHS safety

Signal word: Danger

GHS07
GHS07
GHS08
GHS08

H319 — Causes serious eye irritation

H335 — May cause respiratory irritation

H372 — Causes damage to organs through prolonged or repeated exposure

H302 — Harmful if swallowed

H361 — Suspected of damaging fertility or the unborn child

H373 — May cause damage to organs through prolonged or repeated exposure

Scientific literature

Brak articles naukowych dla CAS 100-21-0 w PubMed / OpenAlex / Semantic Scholar.

Synonyms
TEREPHTHALIC ACID · 100-21-0 · p-Phthalic acid · 1,4-Benzenedicarboxylic acid · benzene-1,4-dicarboxylic acid · p-Dicarboxybenzene · 1,4-dicarboxybenzene · Acide terephtalique · p-Benzenedicarboxylic acid · p-Carboxybenzoic acid · Tephthol · para-Phthalic acid · Kyselina tereftalova · 4-Carboxybenzoic Acid · TA-33MP
Data sources
Related molecules
📜 License & provenanceMolGod_License_1
COMPUTED — PubChem3D · 3D conformer computed by PubChem using OMEGA; not an experimental structure.
Model
Terephthalic Acid · 100-21-0
InChIKey
KKEYFWRCBNTPAC-UHFFFAOYSA-N
License
CC BY-SA 4.0 International
Attribution
MolGod Scientific — Terephthalic Acid (CAS 100-21-0)
License & provenance record
Terephthalic Acid (CAS 100-21-0) →
MolGod molecule record
Terephthalic Acid →
Source data
PubChem CID 7489 ↗
Model information
STL generated by MolGod · MolGod STL Exporter build 48804cd20b0d · generated 2026-10-14
SHA-256 (STL)
a208abed27d6d638f2d4ab7f7c642173c28aadb23df585277af6eaece7be7eb6
MD5 (STL)
60571d6541299ea7afdabfc043003a78
MolGod Identification Number
MG_864-993-681-12
Transformation
MolGod Scientific ball-and-stick mesh
Changes
Converted into a triangulated molecular mesh; atomic coordinates and connectivity unchanged.
Wikimedia Commons
STL · PNG
Free printable molecule model
Download the model, print it and use it in education. When you publish a photo, a material or an adaptation, the CC BY-SA 4.0 International licence requires you to credit “MolGod Scientific” as the author of the model, link to the original and to the licence text, indicate any changes you made and share adaptations under the same licence. A ready-to-use attribution text is in this section. No sign-up, no fees and no obligation to leave a review.

This license applies to the MolGod-created STL mesh, not automatically to third-party source material.

This 3D model is also published on: Zenodo (DOI 10.5281/zenodo.23454216) · Wikimedia Commons
Included in datasets: Figshare (DOI 10.6084/m9.figshare.34657527) · Hugging Face · OSF project index
Source structure: PubChem (CID 7489)
—