270113

Sulfuric acid, fuming

ACS reagent, 30% free SO₃ basis

• Synonym(s): Oleum
• Linear Formula: H₂SO₄ · (SO₃)_x
• CAS Number: 8014-95-7
• Molecular Weight: 98.08
• Beilstein/REAXYS Number: 2037554
• MDL number: MFCD00137792
• UNSPSC Code: 12352106
• PubChem Substance ID: 24856355

Properties

• grade: ACS reagent
• vapor density: 3 (vs air)
• vapor pressure: 2 mmHg ( 25 °C)
• concentration: 30% (free SO₃)
• ign. residue: ≤0.002%
• color: colorless to very light brown
• density: 1.925 g/mL at 25 °C (lit.)
• anion traces: nitrate (NO₃^-): ≤1 ppm
• cation traces: As: ≤0.03 ppm; Fe: ≤2 ppm; NH₄⁺: ≤3 ppm
• 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);
• InChI key: HIFJUMGIHIZEPX-UHFFFAOYSA-N

Safety Information

• pictograms: GHS06,GHS05
• signalword: Danger
• hcodes: H314,H330,H335
• pcodes: P260 - P271 - P280 - P303 + P361 + P353 - P304 + P340 + P310 - P305 + P351 + P338
• Hazard Classifications: Acute Tox. 2 Inhalation - Skin Corr. 1A - STOT SE 3
• target_organs: Respiratory system
• supp_hazards: EUH014
• Storage Class: 6.1B - Non-combustible acute toxic Cat. 1 and 2 / very toxic hazardous materials
• wgk_germany: WGK 1
• flash_point_f: Not applicable
• flash_point_c: Not applicable
• ppe: Faceshields, Gloves, Goggles, type ABEK (EN14387) respirator filter