Citric acid

CAS 77-92-9  ·  C6H8O7  ·  MW 192.12 g/mol

Full record: Citric acid — Safety Data Sheet →

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3D model Citric Acid, CAS 77-92-9, molecular formula C6H8O7, molar mass 192.12 g/mol

Model views

  • Citric acid (CAS 77-92-9) – ball-and-stick 3D model, MolGod Viewer
    ball-and-stick 3D model
  • Citric acid (CAS 77-92-9) – skeletal 3D model, MolGod Viewer
    skeletal 3D model
  • space-filling 3D model – rotation animation
  • Citric acid (CAS 77-92-9) – 2D structure, MolGod Viewer
    2D structure

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citric acid, C6H8O7, CAS 77-92-9 - 3D molecular model
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About Citric acid

Citric acid is a chemical compound registered under number CAS 77-92-9, with the molecular formula C6H8O7, and a molar mass of 192.12 g/mol.

The molecule contains 21 atoms connected by 20 chemical bonds. The full systematic IUPAC name of this compound is 2-hydroxypropane-1,2,3-tricarboxylic 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 = -1.7 (negative value, a hydrophilic compound), polar surface area PSA = 132 Ų, 4 donors and 7 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 formulaC6H8O7
Molar mass192.12 g/mol
IUPAC2-hydroxypropane-1,2,3-tricarboxylic acid
SMILESC(C(=O)O)C(CC(=O)O)(C(=O)O)O
InChIKeyKRKNYBCHXYNGOX-UHFFFAOYSA-N
logP (XLogP3)-1.7
PSA132 Ų
HBD / HBA4 / 7
PubChem CIDCID 311 ↗
GHS safety

Signal word: Warning

GHS07
GHS07

H335 — May cause respiratory irritation

H319 — Causes serious eye irritation

Scientific literature

Related literature

5 articles · 5 open access · Sources: PubMed, OpenAlex, Semantic Scholar

Filters:Export:📄 BibTeX📑 RIS📋 EndNote🔧 CSL-JSON

📈 Publication timeline (number of articles: 5)

2009: number of articles 120092013: number of articles 12016: number of articles 120162017: number of articles 12026: number of articles 12026

Bar height = number of articles in a given year. Hover over a bar to see details.

Data from PubMed (NIH NLM), OpenAlex (CC0), Semantic Scholar (AI2). AI Summary generated by Semantic Scholar TLDR. Articles marked with require paid access.

Synonyms
citric acid · 77-92-9 · 2-hydroxypropane-1,2,3-tricarboxylic acid · Citric acid, anhydrous · Aciletten · Anhydrous citric acid · Citro · Citretten · Citric acid anhydrous · Chemfill · Hydrocerol A · 1,2,3-Propanetricarboxylic acid, 2-hydroxy- · 2-hydroxy-1,2,3-propanetricarboxylic acid · Kyselina citronova · 2-Hydroxytricarballylic acid
Data sources
Related molecules
📜 License & provenanceMolGod_License_1
COMPUTED — PubChem3D · 3D conformer computed by PubChem using OMEGA; not an experimental structure.
Model
citric acid · 77-92-9
InChIKey
KRKNYBCHXYNGOX-UHFFFAOYSA-N
License
CC BY-SA 4.0 International
Attribution
MolGod Scientific — citric acid (CAS 77-92-9)
License & provenance record
citric acid (CAS 77-92-9) →
MolGod molecule record
citric acid →
Source data
PubChem CID 311 ↗
Model information
STL generated by MolGod · MolGod STL Exporter build 48804cd20b0d · generated 2026-10-14
SHA-256 (STL)
85b8b9e3f9ab4e5c01cabb5082e94bcc423b66e73c4b66a4ed422ce33f8ebcd7
MD5 (STL)
7ef7a5c9e6b60a43f4a2a6893526682c
MolGod Identification Number
MG_743-584-222-82
Transformation
MolGod Scientific ball-and-stick mesh
Changes
Converted into a triangulated molecular mesh; atomic coordinates and connectivity unchanged.
Wikimedia Commons
not published yet
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