Citric acid

About This Item

Molecular Formula	C₆H₈O₇
CAS Number	77-92-9

FC-0179908

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Properties

Chemical Identifiers

IUPAC Name	2-hydroxypropane-1,2,3-tricarboxylic acid
SMILES	C(C(=O)O)C(CC(=O)O)(C(=O)O)O
InChI Key	KRKNYBCHXYNGOX-UHFFFAOYSA-N
InChI	InChI=1S/C6H8O7/c7-3(8)1-6(13,5(11)12)2-4(9)10/h13H,1-2H2,(H,7,8)(H,9,10)(H,11,12)

Physical Properties

Boiling Point	Decomposes (NTP, 1992)
Melting Point	153 °C
Flash Point	100 °C
Density	1.54 at 68 °F (USCG, 1999) - Denser than water; will sink

Safety Information

Hazard Class

Warning

Flash Point

100 °C

Please refer to the Safety Data Sheet (SDS) for complete handling, storage, and disposal instructions. Follow all applicable regulations when working with this chemical reagent.