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Periodic Table/Compounds/Citric Acid

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© Melvin Olsson 2025–2026
Data: IAEA & PubChem

Citric Acid

C₆H₈O₇·192.123 g/mol·Organic·CID 311
Food ChemistryCommon

A tricarboxylic acid central to the citric acid cycle (Krebs cycle) in metabolism. Gives citrus fruits their sour taste. Widely used as a food preservative, flavoring agent, and chelating agent.

2D structure of Citric Acid

Molecular Structure

Molecular Propertiesmass · H-bonds · stereo

GHS Hazard Classification

Warning
Irritant
Irritant
Hazards
  • H319Causes serious eye irritation
  • H335May cause respiratory irritation
  • H315Causes skin irritation

Source: PubChem GHS Classification. Always consult the SDS for handling.

Constituent Elements

C
CarbonZ=6
H
HydrogenZ=1
O
OxygenZ=8

External Resources

PubChem ↗Wikipedia ↗