C
2
H
2
O
Related molecular formulas
C
2
H
4
O
C
O
C
2
H
2
O
C
3
H
4
O
C
2
O
C
2
H
2
C
2
H
2
O
2
The
molecular formula
C
2
H
2
O
(molar mass: 42.04 g/mol, exact mass: 42.0106 u) may refer to:
Ethenone
, or ketene
Ethynol
, or hydroxylacetylene
Oxirene