Structure via PubChem · Public domain (PubChem)
Oleum
Sign in to saveAlso known as fuming sulfuric acid, fuming sulphuric acid, Nordhausen acid
Oleum (Latin oleum, meaning oil), or fuming sulfuric acid, is a term referring to solutions of various compositions of sulfur trioxide in sulfuric acid, or sometimes more specifically to disulfuric acid (also known as pyrosulfuric acid).
Chemical data
- Formula
- H2O7S2
- Molecular weight
- 178.15 g/mol
- IUPAC name
- sulfuric acid;sulfur trioxide
- SMILES
- OS(=O)(=O)O.O=S(=O)=O
- InChIKey
- HIFJUMGIHIZEPX-UHFFFAOYSA-N
- Polar surface area
- 135 Ų
- H-bond donors
- 2
- H-bond acceptors
- 7
- Formal charge
- 0
via PubChem
Wikidata facts
- Instance of
- solution
- Has part
- sulfur trioxide
- Mass
- 98.082
- Image
- Oleum fuming.jpg
Show 7 more facts
- chemical formula
- H₂SO₄
- pKa
- -3
- refractive index
- 1.397
- density
- 1.8356
- boiling point
- 279.6
- melting point
- -10.38
- electric dipole moment
- 2.72
Sources (2)
via Wikidata · CC0