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Molecule record

propylene glycol

C3H8O2

76.09 g/mol

2D structure for propylene glycol

Molecular properties

Formula
C3H8O2
Molar mass
76.09 g·mol−1
Exact mass
76.0524 Da
0
2
2
40.50 Ų
-0.9 (PubChem computed XLogP3-AA descriptor)
CAS
57-55-6
PubChem CID
1030

Interactions

Polarity
Often polar; exact polarity depends on size, substitution, and ionization state.
Acid-base behavior
Review ionizable groups and pKa data where available; ChemForge does not infer definitive acid-base state from identity alone.
Intermolecular forces
Assess dispersion, dipole interactions, hydrogen bonding, and ionic character from the functional groups shown.

Functional groups

Alcohol

Physical properties

PropertyValueConditionsSource
Logp-0.9PubChem computed XLogP3-AA descriptorPubChem(link only)

Common names and synonyms

  • (RS)-1,2-Propanediol
  • 1,2-Propylene glycol
  • 1,2-dihydroxypropane
  • 1,2-propanediol
  • 2-Hydroxypropanol
  • 57-55-6
  • DL-1,2-Propanediol
  • Dowfrost
Show all 23 synonyms
  • Isopropylene glycol
  • Methyl glycol
  • Methylethyl glycol
  • Methylethylene glycol
  • Monopropylene glycol
  • Propylene Glycol USP
  • Sentry Propylene Glycol
  • Sirlene
  • Solar Winter BAN
  • Solargard P
  • Trimethyl glycol
  • Ucar 35
  • alpha-Propyleneglycol
  • dl-Propylene glycol
  • propane-1,2-diol

Structure identifiers

Canonical SMILES
CC(CO)O
Isomeric SMILES
CC(CO)O
InChI
InChI=1S/C3H8O2/c1-3(5)2-4/h3-5H,2H2,1H3
InChIKey
DNIAPMSPPWPWGF-UHFFFAOYSA-N
PubChem CID
1030

Spectroscopy

Tabs appear only for spectra stored with clear provenance.

Open library

IR spectrum

ChemArche Original Educational Content(redistributable)

Simulated FTIR trace

Predicted FTIR / %T

4 cm-1 resolution / deterministic instrument profile

Hover for cursor
4000350030002500200015001000500100500wavenumber (cm−1)transmittance (%)

Peak assignments

3350 cm−1broad O-H (simulated)
2960 cm−1sp3 C-H (simulated)

Simulated NMR

On-demand educational prediction for propylene glycol; not experimental data.

Simulated EI mass spectrum

On-demand educational fragmentation for propylene glycol; not experimental data.

Sources

Molecule identity

Retrieved 8/7/2026. Reuse status is summarized by the badge; open the source for full details.

PubChem(link only)

simulated IR

ChemForge original educational simulation.

ChemArche Original Educational Content(redistributable)
Open source record