Isophthalic acid
Isophthalic acid is an organic compound with the molecular formula C8H6O4.
- Formula
- C8H6O4
- Functional group
- Carboxylic acids; Dicarboxylic acids
- Molar mass
- 166.13 g/mol
- Also known as
- benzene-1,3-dicarboxylic acid, 1,3-Benzenedicarboxylic acid, m-Phthalic acid, m-Benzenedicarboxylic acid, Acide isophtalique, Kyselina isoftalova
Overview
Isophthalic acid is an organic compound with the molecular formula C8H6O4.
Identifiers
- Formula
- C8H6O4
- Functional group
- Carboxylic acids; Dicarboxylic acids
- Molar mass
- 166.13 g/mol
- Also known as
- benzene-1,3-dicarboxylic acid, 1,3-Benzenedicarboxylic acid, m-Phthalic acid, m-Benzenedicarboxylic acid, Acide isophtalique, Kyselina isoftalova
Chemical identifiers
- SMILES
- C1=CC(=CC(=C1)C(=O)O)C(=O)O
- InChI
- InChI=1S/C8H6O4/c9-7(10)5-2-1-3-6(4-5)8(11)12/h1-4H,(H,9,10)(H,11,12)
- PubChem CID
- 8496
Properties
- Melting Point
- 347 °C
- Sublimation
- Sublimes
- Relative density (water = 1)
- Relative density (water = 1): 1.54
- Water solubility
- In water, 5400 mg/L at 14 °C (pH adjusted water for complete dissociation)
Related compounds
- Carboxylic acids
Isophthalic acid is an organic compound with the molecular formula C8H6O4.
- Dicarboxylic acids
Isophthalic acid is an organic compound with the molecular formula C8H6O4.
References
- PubChem Compound Summary: Isophthalic acid (CID 8496)National Center for Biotechnology Information · PubChem
Identity, molecular formula, molecular weight and aliases retrieved via PUG REST on 2026-09-08.
- Hazardous Substances Data Bank (HSDB): Isophthalic acid — melting pointHazardous Substances Data Bank (HSDB)
Retrieved through PubChem PUG View on 2026-09-08. https://pubchem.ncbi.nlm.nih.gov/compound/8496#section=Melting-Point. Source value, complete property clause or compact miscibility statement retained; absent pressure, temperature or phase conditions are not inferred. Original reference: Haynes, W.M. (ed.) CRC Handbook of Chemistry and Physics. 91st ed. Boca Raton, FL: CRC Press Inc., 2010-2011, p. 3-312
- Hazardous Substances Data Bank (HSDB): Isophthalic acid — boiling pointHazardous Substances Data Bank (HSDB)
Retrieved through PubChem PUG View on 2026-09-08. https://pubchem.ncbi.nlm.nih.gov/compound/8496#section=Boiling-Point. Source value, complete property clause or compact miscibility statement retained; absent pressure, temperature or phase conditions are not inferred. Original reference: Haynes, W.M. (ed.) CRC Handbook of Chemistry and Physics. 91st ed. Boca Raton, FL: CRC Press Inc., 2010-2011, p. 3-312
- ILO-WHO International Chemical Safety Cards (ICSCs): Isophthalic acid — densityILO-WHO International Chemical Safety Cards (ICSCs)
Retrieved through PubChem PUG View on 2026-09-08. https://pubchem.ncbi.nlm.nih.gov/compound/8496#section=Density. Source value, complete property clause or compact miscibility statement retained; absent pressure, temperature or phase conditions are not inferred.
- Hazardous Substances Data Bank (HSDB): Isophthalic acid — solubilityHazardous Substances Data Bank (HSDB)
Retrieved through PubChem PUG View on 2026-09-08. https://pubchem.ncbi.nlm.nih.gov/compound/8496#section=Solubility. Source value, complete property clause or compact miscibility statement retained; absent pressure, temperature or phase conditions are not inferred. Original reference: UNEP Chemicals; OECD Screening Information Datasets (SIDS) for High Volume Chemicals; on-line access as of Oct 13, 2011: https://www.chem.unep.ch/irptc/sids/oecdsids/sidspub.html