Ascorbic acid

Ascorbic acid is an organic compound with the molecular formula C6H8O6.

Formula
C6H8O6
Molar mass
176.12 g/mol
Also known as
(2R)-2-[(1S)-1,2-dihydroxyethyl]-3,4-dihydroxy-2H-furan-5-one, l-ascorbic acid, vitamin C, L(+)-Ascorbic acid, Ascoltin, Ascorbicap, Cevitamic acid

Overview

Ascorbic acid is an organic compound with the molecular formula C6H8O6.

Identifiers

Formula
C6H8O6
Molar mass
176.12 g/mol
Also known as
(2R)-2-[(1S)-1,2-dihydroxyethyl]-3,4-dihydroxy-2H-furan-5-one, l-ascorbic acid, vitamin C, L(+)-Ascorbic acid, Ascoltin, Ascorbicap, Cevitamic acid
Chemical identifiers
SMILES
C([C@@H]([C@@H]1C(=C(C(=O)O1)O)O)O)O
InChI
InChI=1S/C6H8O6/c7-1-2(8)5-3(9)4(10)6(11)12-5/h2,5,7-10H,1H2/t2-,5+/m0/s1
PubChem CID
54670067

Properties

Melting / decomposition
190-192 °C (some decomposition)
Density
1.65 g/cu cm at 25 °C
Water solubility
Solubility in water: 80% at 100 °C, 40% at 45 °C
Data availability

Not published: Boiling Point.

References

  1. PubChem Compound Summary: Ascorbic acid (CID 54670067)National Center for Biotechnology Information · PubChem

    Identity, molecular formula, molecular weight and aliases retrieved via PUG REST on 2026-09-08.

  2. Hazardous Substances Data Bank (HSDB): Ascorbic acid — melting pointHazardous Substances Data Bank (HSDB)

    Retrieved through PubChem PUG View on 2026-09-08. https://pubchem.ncbi.nlm.nih.gov/compound/54670067#section=Melting-Point. Source value, complete property clause or compact miscibility statement retained; absent pressure, temperature or phase conditions are not inferred. Original reference: O'Neil, M.J. (ed.). The Merck Index - An Encyclopedia of Chemicals, Drugs, and Biologicals. Whitehouse Station, NJ: Merck and Co., Inc., 2006., p. 136

  3. Hazardous Substances Data Bank (HSDB): Ascorbic acid — densityHazardous Substances Data Bank (HSDB)

    Retrieved through PubChem PUG View on 2026-09-08. https://pubchem.ncbi.nlm.nih.gov/compound/54670067#section=Density. Source value, complete property clause or compact miscibility statement retained; absent pressure, temperature or phase conditions are not inferred. Original reference: Lide, D.R. CRC Handbook of Chemistry and Physics 88TH Edition 2007-2008. CRC Press, Taylor & Francis, Boca Raton, FL 2007, p. 3-28

  4. Hazardous Substances Data Bank (HSDB): Ascorbic acid — solubilityHazardous Substances Data Bank (HSDB)

    Retrieved through PubChem PUG View on 2026-09-08. https://pubchem.ncbi.nlm.nih.gov/compound/54670067#section=Solubility. Source value, complete property clause or compact miscibility statement retained; absent pressure, temperature or phase conditions are not inferred. Original reference: O'Neil, M.J. (ed.). The Merck Index - An Encyclopedia of Chemicals, Drugs, and Biologicals. Whitehouse Station, NJ: Merck and Co., Inc., 2006., p. 136