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citric acid

File:Zitronensäure_-_Citric_acid.svg · Wikimedia Commons · See Wikimedia Commons

EntityQ159683· pop 79· linked from 1,401 articles

citric acid

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Also known as H3cit, E330, 2-hydroxypropane-1,2,3-tricarboxylic acid, E 330, anhydrous citric acid, beta-hydroxytricarballylic acid, 3-carboxy-3-hydroxypentane-1,5-dioic acid, 2-hydroxytricarballylic acid

weak organic acid

OverviewAI-generated

Citric acid is a chemical compound with the formula C₆H₈O₇. Its IUPAC name is 2-hydroxypropane-1,2,3-tricarboxylic acid. The substance has a density of 1.665 and a mass of 192.027. It melts at 154 and decomposes at 175. The pKa value is 3.14, and the molecule carries a charge of 0. It was discovered in 1784.

The compound features four hydrogen bond donors and seven hydrogen bond acceptors. Its topological polar surface area is 132, and the xlogp value is -1.7. The canonical SMILES notation is C(C(=O)O)C(CC(=O)O)(C(=O)O)O. Citric acid is classified under the MCN code 2918.14.00.

In scientific literature, citric acid is the subject of 37,204 PubMed entries. It is also referenced by 1,401 other encyclopedia articles. A Commons category exists for the substance.

Synthesized by Vinony from 24 facts across 4 sources: Wikidata, PubChem, PubMed, Vinony graph. Generated from structured data (not the Wikipedia text) and checked against those facts — may still contain errors.

Chemical data

Formula
C6H8O7
Molecular weight
192.12 g/mol
IUPAC name
2-hydroxypropane-1,2,3-tricarboxylic acid
SMILES
C(C(=O)O)C(CC(=O)O)(C(=O)O)O
InChIKey
KRKNYBCHXYNGOX-UHFFFAOYSA-N
XLogP
-1.7
Polar surface area
132 Ų
H-bond donors
4
H-bond acceptors
7
Formal charge
0

via PubChem

Research

37,204 papers

via PubMed

~18 min read

Encyclopedic overview

Crystal sample from the saturated citric acid solution.

Names

Excerpted from Wikipedia’s “citric acid” article, available under the CC BY-SA 4.0 licence.

Gallery (12)

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