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Periodic Table/Compounds/Acetylene-d2

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© Melvin Olsson 2025–2026
Data: IAEA & PubChem

Acetylene-d2

C₂H₂·28.050 g/mol·CID 136829

IUPAC: 1,2-dideuterioethyne

Also known as: 1070-74-2, DTXSID00147868, RefChem:109146, DTXCID1070359, UN3167 (+7 more)

2D structure of Acetylene-d2

Molecular Structure

Molecular Propertiesmass · H-bonds · stereo

Molecular Weight

28.050g/mol

Exact Mass

28.028204Da

Monoisotopic Mass

28.028204Da

XLogP

0.4

Polar Surface Area

0.0Ų

Complexity

8

Formal Charge

0

H-Bond Donors

0

H-Bond Acceptors

0

Rotatable Bonds

0

Heavy Atoms

2

Stereo Centers

0

Bond Stereo

0

Drug-Likeness (Lipinski's Rule of Five)

✓ 28.1 g/mol
MW ≤ 500
✓ 0.4
LogP ≤ 5
✓ 0
H-bond donors ≤ 5
✓ 0
H-bond acceptors ≤ 10

Passes all rules — good oral bioavailability predicted

GHS Hazard Classification

Danger
Flammable
Flammable
Compressed Gas
Compressed Gas
Hazards
  • H220Extremely flammable gas
  • H280Contains gas under pressure; may explode if heated

Source: PubChem GHS Classification. Always consult the SDS for handling.

Chemical IdentifiersSMILES · InChI

InChI

InChI=1S/C2H2/c1-2/h1-2H/i1D,2D

Isomers8 compounds with formula C₂H₂

2D structure of acetylene

acetylene

CID 6326 · 26.0 g/mol

2D structure of deuterioethyne

deuterioethyne

CID 137497 · 27.0 g/mol

2D structure of (1,2-13C2)ethyne

(1,2-13C2)ethyne

CID 10877042 · 28.0 g/mol

2D structure of CID 6432236

CID 6432236

CID 6432236 · 26.0 g/mol

2D structure of 1,2-ditritioethyne

1,2-ditritioethyne

CID 12198473 · 30.1 g/mol

2D structure of (111C)ethyne

(111C)ethyne

CID 450700 · 25.0 g/mol

2D structure of (114C)ethyne

(114C)ethyne

CID 12198470 · 28.0 g/mol

2D structure of (113C)ethyne

(113C)ethyne

CID 12198471 · 27.0 g/mol

External Resources

PubChem ↗Wikipedia ↗