Home Molecular Weight Glycolic acid

Molecular Weight of Glycolic acid (C2H4O3)

Identification of Glycolic acid Chemical Compound

2D chemical structure image of glycolic acid
Chemical Formula C2H4O3
Molecular Weight 76.05136 g/mol
IUPAC Name 2-hydroxyacetic acid
SMILES String OCC(O)=O
InChI InChI=1S/C2H4O3/c3-1-2(4)5/h3H,1H2,(H,4,5)
InChIKey AEMRFAOFKBGASW-UHFFFAOYSA-N

Molecular Weight Description

The glycolic acid molecule consists of 4 Hydrogen atom(s), 2 Carbon atom(s) and 3 Oxygen atom(s) – a total of 9 atom(s). The molecular weight of glycolic acid is determined by the sum of the atomic weights of each constituent element multiplied by the number of atoms, which is calculated to be:

$$ 76.05136 · \frac{g}{mol} $$

The exact term of the above molecular weight is “molar mass”, which is based on the atomic mass of each element. Molecular weight is actually an older term of “relative molar mass” or “molecular mass”, which is a dimensionless quantity equal to the molar mass divided by the molar mass constant defined by 1 g/mol.

Molecular masses are calculated from the standard atomic weights of each nuclide, while molar masses are calculated from the atomic mass of each element. The atomic mass takes into account the isotopic distribution of the element in a given sample.

Ball-and-stick model of glycolic acid
Ball-and-stick model of glycolic acid

Additional Information for Identifying Glycolic acid Molecule


  • InChI (IUPAC International Chemical Identifier) information of glycolic acid

    In addition to the molecular weight information, the structural information of glycolic acid in a textual expression is available via InChi. The full standard InChI of glycolic acid is given below:

    InChI=1S/C2H4O3/c3-1-2(4)5/h3H,1H2,(H,4,5)

    It can provide a way to encode the molecular information of glycolic acid to facilitate the search for the compound information in databases and on the web.

    The condensed, 27 character standard InChIKey (hashed version of the full standard InChI) of glycolic acid is:

    InChIKey=AEMRFAOFKBGASW-UHFFFAOYSA-N

    It may allow easier web searches for glycolic acid. The InChIKey, however, needs to be linked to the full InChI as well in order to get back to the original structure of the glycolic acid as the full standard InChI cannot be reconstructed from the InChIKey.

  • Other names (synonyms) or registry numbers of glycolic acid

    There may be different names of the glycolic acid compound depending on the various situations of industrial applications, which are given below including the registry numbers if available:

    • ARONIS23902
    • glycolic acid
    • hydroxyacetic acid
    • 2-Hydroxyacetic acid
    • 79-14-1
    • Hydroxyethanoic acid
    • Glycollic acid
    • Acetic acid, hydroxy-
    • glycolate
    • Caswell No. 470
    • Kyselina glykolova
    • Kyselina glykolova [Czech]
    • Kyselina hydroxyoctova
    • glycolicacid
    • HOCH2COOH
    • Kyselina hydroxyoctova [Czech]
    • Glycocide
    • alpha-Hydroxyacetic acid
    • POLYGLYCOLIC ACID
    • EPA Pesticide Chemical Code 000101
    • GlyPure
    • GlyPure 70
    • GLYCOLLATE
    • C2H4O3
    • 2-Hydroxyethanoic acid
    • Acetic acid, hydroxy-, homopolymer
    • Acetic acid, 2-hydroxy-
    • .alpha.-Hydroxyacetic acid
    • Acetic acid, 2-hydroxy-, homopolymer
    • MFCD00004312
    • Glycolic acid-13C2
    • Polyglycollic acid
    • 26009-03-0
    • 26124-68-5
    • GOA
    • Dexon (polyester)
    • 259744-22-4
    • Poly(L-glycolic acid)
    • Glycolic acid homopolymer
    • Polyglycolide
    • Hydroxyacetic acid homopolymer
    • Hydroxyethanoate
    • a-Hydroxyacetate
    • Dicarbonous acid
    • hydroxy-acetic acid
    • alpha-Hydroxyacetate
    • hydroxyl acetic acid
    • a-Hydroxyacetic acid
    • Glycolic Acid 70%
    • 2-hydroxy acetic acid
    • 2-hydroxy-acetic acid
    • omega-Hydroxy fatty acid
    • 2-hydroxyl ethanoic acid
    • Glycolic acid, polyesters
    • bmse000245
    • Glycolic acid (7CI,8CI)
    • GLYCOLIC ACID, CRYST
    • ETHYLDIOXY, 2-OXO-
    • Glycolic acid, p.a., 98%
    • 0WT12SX38S
    • Acetic acid, hydroxy- (9CI)
    • HMDB00115
    • Glycolic acid solution, 56-58%
    • Glycolic acid, >=97.0% (T)
    • ANW-37261
    • 1932-50-9 (mono-potassium salt)
    • 39663-84-8 (mono-lithium salt)
    • Glycolic acid, ReagentPlus(R), 99%
    • 35249-89-9 (mono-ammonium salt)
    • Glycolic acid solution, puriss., 70%
    • RTR-037849
    • CAS-79-14-1
    • TRA-0184681
    • 2836-32-0 (mono-hydrochloride salt)
    • K398
    • Glycolic acid solution, CP, 70% in H2O
    • 25904-89-6 (unspecified potassium salt)
    • G0110
    • G0196
    • Glycolic acid, SAJ special grade, >=98.0%
    • Glycolic Acid, pharmaceutical secondary standard
    • Glycolic acid, Vetec(TM) reagent grade, 98%
    • M-7418
    • Glycolic acid, BioXtra, >=98.0% (titration)
    • Glycolic acid solution, technical, ~55% in H2O
    • I04-1094
    • J-509661
    • F2191-0224
    • Glycolic acid solution, high purity, 70 wt. % in H2O
    • Z1259155884
    • 287EB351-FF9F-4A67-B4B9-D626406C9B13
    • Glycolic acid solution, technical grade, 70 wt. % in H2O
    • Glycolic acid, certified reference material, TraceCERT(R)
    • Glycolic acid, anhydrous, free-flowing, Redi-Dri(TM), ReagentPlus(R), 99%
    • ALPHA/BETA HYDROXY ACIDS (GLYCOLIC ACID) (SEE ALSO ALPHA/BETA HYDROXY ACIDS)
    • 1033720-45-4
    • 1033720-48-7
    • 702627-33-6
    • BBC/181
    • ZX-AS004398
    • BBV-39824206
    • EN300-19242

Glycolic acid Identification Summary Frequently Asked Questions (FAQs)

  • What’s the formula of glycolic acid?

    C2H4O3
  • How many atoms and what are the elements in the glycolic acid molecule?

    9 atom(s) – 4 Hydrogen atom(s), 2 Carbon atom(s) and 3 Oxygen atom(s)
  • How many chemical bonds and what types of bonds are in the glycolic acid structure?

    8 bond(s) – 4 non-H bond(s), 1 multiple bond(s), 1 rotatable bond(s), 1 double bond(s), 1 carboxylic acid(s) (aliphatic), 2 hydroxyl group(s) and 1 primary alcohol(s)
  • What’s the molar mass of glycolic acid?

    76.05136 g/mol
  • What’s the SMILES format of glycolic acid?

    OCC(O)=O
  • What’s the InChI format of glycolic acid?

    InChI=1S/C2H4O3/c3-1-2(4)5/h3H,1H2,(H,4,5)
  • What’s the InChIKey string of glycolic acid?

    AEMRFAOFKBGASW-UHFFFAOYSA-N

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Source: Mol-Instincts Chemical Database, Predicted on Quantum.
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