435597

Schwefelsäure, rauchend

reagent grade, 20%, as free SO₃

• Synonym(e): Oleum
• Lineare Formel: H₂SO₄ · (SO₃)_x
• CAS-Nummer: 8014-95-7
• Molekulargewicht: 98.08
• Beilstein: 2037554
• MDL-Nummer: MFCD00137792
• UNSPSC-Code: 12352106
• PubChem Substanz-ID: 329756351
• NACRES: NA.21

Eigenschaften

• Qualität: reagent grade
• Qualitätsniveau: 100
• Dampfdichte: 3 (vs air)
• Dampfdruck: 2 mmHg ( 25 °C)
• Form: liquid
• Konzentration: 20% (free SO₃)
• Dichte: 1.925 g/mL at 25 °C (lit.)
• SMILES String: 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);
• InChIKey: HIFJUMGIHIZEPX-UHFFFAOYSA-N

Beschreibung

Allgemeine Beschreibung

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.

Anwendung

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

Sicherheitshinweise

• Piktogramme: GHS06,GHS05
• Signalwort: Danger
• H-Sätze: H314,H330,H335
• P-Sätze: P260 - P271 - P280 - P303 + P361 + P353 - P304 + P340 + P310 - P305 + P351 + P338
• Gefahreneinstufungen: Acute Tox. 2 Inhalation - Skin Corr. 1A - STOT SE 3
• Zielorgane: Respiratory system
• Zusätzliche Gefahrenhinweise: EUH014
• Lagerklassenschlüssel: 6.1A - Combustible acute toxic Cat. 1 and 2 / very toxic hazardous materials
• WGK: WGK 1
• Flammpunkt (°F): Not applicable
• Flammpunkt (°C): Not applicable