Propargyl alcohol
An alcohol, C3H4O, 56.064 g/mol. Boiling point 236.5 °F at 760 mmHg, melting point -48 to -52 °C, as published.
Identifiers
- Molecular formula
- C₃H₄O
- Molecular weight
- 56.064 g/mol
- Exact mass
- 56.026215 g/mol
- IUPAC name
- prop-2-yn-1-ol
- C#CCO
- InChI=1S/C3H4O/c1-2-3-4/h1,4H,3H2
- TVDSBUOJIPERQY-UHFFFAOYSA-N
Measured properties
- Boiling Point
- 236.5 °F at 760 mmHg (NTP, 1992)
- 114-115 °C at 760 mm Hg; 100 °C at 490.3 mm Hg; 70 °C at 147.6 mm Hg; 20 °C at 11.6 mm Hg
- Melting Point
- -54 °F (NTP, 1992)
- -48 to -52 °C
- Density
- 0.9485 at 68 °F (USCG, 1999) - Less dense than water; will float
- 0.9715 at 20 °C/4 °C
- Solubility
- Miscible (NIOSH, 2024)
- Miscible with benzene, chloroform, ethanol, 1,2-dichloroethane, ether, acetone, dioxane, tetrahydrofuran, pyridine; moderately sol in carbon tetrachloride
- Vapor Pressure
- 12 mmHg (NIOSH, 2024)
- 15.6 [mmHg]
- LogP
- log Kow = -0.38
- -0.38
- Flash Point
- 91 °F (NTP, 1992)
- 97 °F
- Viscosity
- 1.68 centipoise at 20 °C
- Refractive Index
- Index of refraction: 1.43064 at 20 °C/D
Calculated properties
- Molecular weight
- 56.06 g/mol
- Exact mass
- 56.026214747 Da
- XLogP3
- -0.4
- Polar surface area
- 20.2 Ų
- Complexity
- 38
- H-bond donors
- 1
- H-bond acceptors
- 1
- logP
- -0.3881
- Topological polar surface area
- 20.23 Ų
- H-bond donors
- 1
- H-bond acceptors
- 1
- Rotatable bonds
- 0
- Molar refractivity
- 15.9188 cm³/mol
- Fraction sp³ carbons
- 0.3333
- QED drug-likeness
- 0.3747
What it is made of
Elements
Structure
- Heavy atoms, hydrogen excluded
- 4
- Total atoms, hydrogen included
- 8
- Rings
- 0
- Aromatic rings
- 0
- Stereocentres
- 0
- Formal charge
- 0
Functional groups
Alcohol
Alkyne
The molecule in three dimensions
The drawing above is a diagram of what is bonded to what. A molecule is not flat, and the model here is one low-energy shape generated from the connectivity — useful for seeing which groups can reach each other, and not a measured structure. A real sample is a population of conformations, interconverting.
Reactions it appears in
Other names for it
The systematic name on this record is prop-2-yn-1-ol.
The sources also call it Prop-2-yn-1-ol, 2-Propyn-1-ol, 1-Propyn-3-ol, 2-Propynyl alcohol, Ethynylcarbinol, 2-Propynol, Ethynyl carbinol, Propynyl alcohol, Methanol, ethynyl-, 3-Propynol, 1-Hydroxy-2-propyne.
Structurally related
Seen alongside it in reaction records
Molecules that appear in the same recorded reactions as Propargyl alcohol. This says nothing about structure: most of them are the bases, solvents, ligands and catalysts the chemistry needed, and they are here because somebody put them in the same flask.
1,2-Dimethoxyethane
used as a reactant
C₄H₁₀O₂, 90.122 g/mol.
1,8-Diazabicyclo(5.4.0)undec-7-ene
used as a reactant
C₉H₁₆N₂, 152.241 g/mol.
(7-Chloro-2-methylimidazo[2,1-a]isoquinolin-3-yl)methyl-trimethylazanium
used as a reactant
C₁₆H₁₉ClN₃+, 288.802 g/mol.
({4-[(Prop-2-yn-1-yl)oxy]butoxy}methyl)benzene
formed as a product
C₁₄H₁₈O₂, 218.296 g/mol.
Where these values came from
chemistry engine
What this page does not claim
Identifiers are copied from the source record, measured values are reported as published, and calculated values are marked as calculated. Nothing here is a hazard, purity or handling assessment — how the library is checked.
Where to next
More molecules under P
The rest of this shelf, a hundred names at a time.
Molar mass calculator
Work with C3H4O in a calculation, with every element's contribution shown.
Molarity calculator
Grams of Propargyl alcohol for a volume and a concentration, or the concentration a mass gives.
Open in ReactionLens
The full record in the workstation: every atom, every bond, and the reactions it appears in.