1.00720

Sulfuric acid fuming 65% SO3

• Synonym(s): Sulfuric acid fuming 65% SO3, Oleum
• Empirical Formula (Hill Notation): H₂O₄S · SO₃ (1:2)
• CAS Number: 8014-95-7
• UNSPSC Code: 12352301
• NACRES: NA.21
• MDL number: MFCD00137792
• Concentration: 64-66% (acidimetric, free SO₃)
• Form: viscous liquid

Properties

• vapor pressure: 105 hPa ( 20 °C)
• Quality Segment: 200
• form: viscous liquid
• concentration: 64-66% (acidimetric, free SO₃)
• ign. residue: ≤0.02%
• color: clear to turbid colorless to brownish
• pH: <1 (20 °C, 100 g/L in H₂O)
• bp: 64 °C/1013 hPa
• mp: 1 °C
• density: 1.99 g/cm³ at 20 °C
• storage temp.: 2-30°C
• SMILES string: [S](=O)(=O)(O)O.[S](=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

Description

Analysis Note

Color (visual): colourless to brownish
Appearance of substance (visual): clear to turbid
Content of free SO₃ (acidimetric): 64 - 66 %
Residue on ignition: ≤ 0.02 %
The product may be present as a cloudy viscous liquid and form fine suspended particles

Safety Information

• Pictograms: GHS06,GHS05
• Signal Word: Danger
• Precautionary Statements: 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
• Flash Point (°F): Not applicable
• Flash Point (°C): Not applicable
• Hazard Codes: H314,H330,H335
• Storage Class: 6.1B - Non-combustible acute toxic Cat. 1 and 2 / very toxic hazardous materials