435597

Sulfuric acid, fuming

reagent grade, 20%, as free SO₃

• Synonyme(s) : Oleum
• Formule linéaire : H₂SO₄ · (SO₃)_x
• Numéro CAS: 8014-95-7
• Poids moléculaire : 98.08
• Numéro Beilstein : 2037554
• Numéro MDL: MFCD00137792
• Code UNSPSC : 12352106
• ID de substance PubChem : 329756351
• Nomenclature NACRES : NA.21

Propriétés

• Qualité: reagent grade
• Niveau de qualité: 100
• Densité de vapeur: 3 (vs air)
• Pression de vapeur: 2 mmHg ( 25 °C)
• Forme: liquid
• Concentration: 20% (free SO₃)
• Densité: 1.925 g/mL at 25 °C (lit.)
• Chaîne SMILES: O=S(=O)=O.OS(O)(=O)=O
• InChI: 1S/H2O4S.O3S/c1-5(2,3)4;1-4(2)3/h(H2,1,2,3,4);
• Clé InChI: HIFJUMGIHIZEPX-UHFFFAOYSA-N

Description

Description générale

Fuming sulfuric acid is an inorganic acid, that can be produced by the addition of sulfur trioxide to concentrated sulfuric acid. It is commonly used as a sulfonating reagent in sulfonation reactions. When fuming sulfuric acid is employed as reaction medium, bromination takes place only in the pyridine nucleus of isomeric methylpyridines and 2,6-dimethylpyridine. It can also oxidize fullerene C₆₀ to form fullerene polymers.

Application

Fuming sulfuric acid may be used as a sulfonating agent for the synthesis of:

• sulfonated poly(1,4-phenylene sulfide)
• water-soluble polyphosphazene polyelectrolyte
• sulfated graphene

Informations sur la sécurité

• Pictogrammes: GHS06,GHS05
• Mention d'avertissement: Danger
• Mentions de danger: H314,H330,H335
• Conseils de prudence: P260 - P271 - P280 - P303 + P361 + P353 - P304 + P340 + P310 - P305 + P351 + P338
• Classification des risques: Acute Tox. 2 Inhalation - Skin Corr. 1A - STOT SE 3
• Organes cibles: Respiratory system
• Risques supp: EUH014
• Code de la classe de stockage: 6.1A - Combustible acute toxic Cat. 1 and 2 / very toxic hazardous materials
• Classe de danger pour l'eau (WGK): WGK 1
• Point d'éclair (°F): Not applicable
• Point d'éclair (°C): Not applicable