Acetylene

C₂H₂CAS 74-86-226.04 g/mol

Open in Covalent MOL file

Properties

Molecular formula: C₂H₂
Molar mass: 26.04 g/mol
Exact mass: 26.0157 Da
Density: 0.6208 g/mL (at −82 °C)
Melting point: −80.8 °C
Boiling point: −84 °C
Flash point: -18.15 °C (closed cup)
Water solubility: 1.2 g/L (25 °C)
logP: 0.25Crippen estimate
Polar surface area: 0.0 Å²
H-bond donors / acceptors: 0 / 0
Rotatable bonds: 0

Hazards

Danger

H220 Extremely flammable gasFlammable gases

Harmonised EU classification (CLP Annex VI, index 601-015-00-0), via PubChem.

Precautionary statements

P203, P210, P222, P280, P377, P381, P403

Identifiers

CAS number

74-86-2

SMILES

C#C

InChIKey

HSFWRNGVRCDJHI-UHFFFAOYSA-N

InChI

InChI=1S/C2H2/c1-2/h1-2H

Weigh it out

Type any one amount. The others follow from the molar mass and density.

Names and synonyms

4 names

Ethyne
Vinylene
Ethine
Narcylen

Reactions

DIETHYL (DICHLOROMETHYL)PHOSPHONATE. PREPARATION AND USE IN THE SYNTHESIS OF ALKYNES: (4-METHOXYPHENYL)ETHYNE (Phosphonic acid, (dichloromethyl)-, diethyl ester to prepare Benzene, 1-ethylnyl-4-methoxy-)product

Work with Acetylene

Predict the NMR spectrum1H and 13C shifts with multiplicities Make a solutionWhat to weigh for any molarity and volume Check drug-likenessLipinski, Veber and lead-likeness Boiling point under vacuumAt any pressure, from its normal boiling point Isotope patternExact mass and the mass spectrum pattern

Elsewhere

PubChem CAS Common Chemistry NIST WebBook Wikipedia