Trimesic acid

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Trimesic acid
Skeletal formula
Ball-and-stick model
IUPAC name
benzene-1,3,5-tricarboxylic acid
3D model (JSmol)
ECHA InfoCard 100.008.253
EC Number 209-077-7
Molar mass 210.14034
Acidity (pKa) 3.12, 3.89, 4.70[1]
Safety data sheet Oxford MSDS
R-phrases (outdated) R36 R37 R38
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Infobox references

Trimesic acid, also known as benzene-1,3,5-tricarboxylic acid, is a benzene derivative with three carboxylic acid groups.

Trimesic acid is a planar molecule (and is one of only four benzenecarboxylic acids with that property).[2]

Trimesic acid can be combined with para-hydroxypyridine to make a water-based gel, stable up to 95 °C.[3]

Trimesic acid crystallizes from water in a hydrogen-bonded hydrated network with wide unidimensional empty channels.[4]

See also[edit]


  1. ^ Brown, H.C., et al., in Baude, E.A. and Nachod, F.C., Determination of Organic Structures by Physical Methods, Academic Press, New York, 1955.
  2. ^ ZORAN MARKOVIĆ, DALIBOR BADJUK and IVAN GUTMAN (2004), Geometry and conformations of benzenecarboxylic acids. J. Serb. Chem. Soc. volume 69 issue 11, pages 877–882 (paper JSCS 3214), UDC 547.584/.585:539.193:54.02
  3. ^ Li Ming Tang and Yu Jiang Wang (2009), Highly stable supramolecular hydrogels formed from 1,3,5-benzenetricarboxylic acid and hydroxyl pyridines. Chinese Chemical Letters volume 20, issue 10, pp. 1259–1262. doi:10.1016/j.cclet.2009.04.030
  4. ^ F.H. Herbstein (1987), Structural Parsimony and Structural Variety Among Inclusion Complexes, Top. Curr. Chem., volume 140, p. 107