Input interpretation
oleum
Chemical names and formulas
formula | H_2SO_4SO_3 Hill formula | H_2O_7S_2 name | oleum IUPAC name | sulfuric acid; sulfur trioxide alternate names | disulfuric acid | dithionic acid | fuming sulfuric acid | oleum iodisum | sulfuric acid, fuming mass fractions | H (hydrogen) 1.13% | O (oxygen) 62.9% | S (sulfur) 36%
Structure diagram
Structure diagram
Basic properties
molar mass | 178.1 g/mol phase | liquid (at STP) melting point | 1 °C boiling point | 142 °C density | 1.94 g/cm^3 solubility in water | reacts
Units
Liquid properties (at STP)
density | 1.94 g/cm^3 vapor pressure | 2 mmHg (at 25 °C)
Units
Chemical identifiers
CAS number | 8014-95-7 PubChem CID number | 24681 SMILES identifier | OS(=O)(=O)O.O=S(=O)=O InChI identifier | InChI=1/H2O4S.O3S/c1-5(2, 3)4;1-4(2)3/h(H2, 1, 2, 3, 4);/f/h1-2H; Gmelin number | 27144 RTECS number | WS5605000
NFPA label
NFPA label
NFPA health rating | 3 NFPA fire rating | 0 NFPA reactivity rating | 2 NFPA hazards | water reactive
Toxicity properties
RTECS classes | tumorigen