Phthalic Anhydride

CAS 85-44-9  ·  C8H4O3  ·  MW 148.11 g/mol

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3D model Phthalic Anhydride, CAS 85-44-9, molecular formula C8H4O3, molar mass 148.11 g/mol
About Phthalic Anhydride

Phthalic Anhydride is a chemical compound registered under number CAS 85-44-9, with the molecular formula C8H4O3, and a molar mass of 148.11 g/mol.

The molecule contains 15 atoms connected by 16 chemical bonds. The full systematic IUPAC name of this compound is 2-benzofuran-1,3-dione. 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 = 1.3 (positive value, a lipophilic compound), polar surface area PSA = 43.4 Ų, 0 donors and 3 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 widget above may be used for educational, research and commercial purposes.

Physicochemical properties
Molecular formulaC8H4O3
Masa molowa148.11 g/mol
IUPAC2-benzofuran-1,3-dione
SMILESC1=CC=C2C(=C1)C(=O)OC2=O
InChIKeyLGRFSURHDFAFJT-UHFFFAOYSA-N
logP (XLogP3)1.3
PSA43.4 Ų
HBD / HBA0 / 3
PubChem CIDCID 6811 ↗
GHS safety

Signal word: Danger

GHS05
GHS05
GHS07
GHS07

H302 — Działa szkodliwie po połknięciu

H335 — Może powodować podrażnienie dróg oddechowych

H315 — Działa drażniąco na skórę

H318 — Powoduje poważne uszkodzenie oczu

H334 — Może powodować objawy alergii lub astmy lub trudności w oddychaniu w następstwie wdychania

H317 — Może powodować reakcję alergiczną skóry

Scientific literature

Related literature

10 articles · 2 open access · Sources: PubMed, OpenAlex, Semantic Scholar

Filtry:Eksport:📄 BibTeX📑 RIS📋 EndNote🔧 CSL-JSON

📈 Publication timeline (10 articles)

1986: 1 articles19862007: 1 articles2008: 1 articles2013: 1 articles2016: 1 articles20162018: 1 articles2020: 2 articles2023: 1 articles2025: 1 articles2025

Bar height = number of articles per year. Hover dla szczegółów.

Dane z PubMed (NIH NLM), OpenAlex (CC0), Semantic Scholar (AI2). AI Summary wygenerowane przez Semantic Scholar TLDR. Artykuły z ikoną wymagają płatnego dostępu.

Synonyms
PHTHALIC ANHYDRIDE · 85-44-9 · 1,3-Isobenzofurandione · 2-Benzofuran-1,3-dione · Phthalandione · Retarder esen · 1,3-Dioxophthalan · 1,3-Phthalandione · Phthalic acid anhydride · Retarder AK · Retarder PD · o-Phthalic acid anhydride · Phthalsaeureanhydrid · ESEN · Vulkalent B/C
Data sources
Related molecules
📜 License & provenanceMolGod_License_1
Phthalic Anhydride (CAS 85-44-9), C8H4O3 - 3D ball-and-stick molecular model, engraved element symbols (C H O), MolGod STL previewPobierz obraz

MG-STL-85-44-9-GRAVERED · 227,070 △ · 11 MB · SHA-256 a0be266cb2290e24

Download 3D model · C H O

Phthalic Anhydride (CAS 85-44-9), C8H4O3 - 3D ball-and-stick molecular model, MolGod STL previewPobierz obraz

MG-STL-85-44-9-NORMAL · 6,336 △ · 309 KB · SHA-256 055efe9489302751

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Model
Phthalic Anhydride · 85-44-9
InChIKey
LGRFSURHDFAFJT-UHFFFAOYSA-N
License
CC BY-SA 4.0 International
Attribution
MolGod Scientific — Phthalic Anhydride (CAS 85-44-9)
License & provenance record
Phthalic Anhydride (CAS 85-44-9) →
MolGod molecule record
Phthalic Anhydride →
Source data
PubChem CID 6811 ↗
Model information
STL generated by MolGod · MolGod STL Exporter @ 8b6dfdd · generated 2026-09-25
SHA-256 (STL)
055efe9489302751c5bd99b16c82d4c281a86eefdba98b8141ff2784bccbb9ea
MD5 (STL)
8000732563be260c24a40535cc7a15fc
Model identifier
MG-STL-85-44-9
Transformation
MolGod Scientific ball-and-stick mesh
Changes
Converted into a triangulated molecular mesh; atomic coordinates and connectivity unchanged.
Wikimedia Commons
not published yet

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

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