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

Properties

• 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
• vapor pressure: 105 hPa ( 20 °C)
• 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
• Quality Level: 200

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: GHS05,GHS07
• signalword: Danger
• hcodes: H290 - H314 - H335
• pcodes: P234 - P261 - P271 - P280 - P303 + P361 + P353 - P305 + P351 + P338
• Hazard Classifications: Eye Dam. 1 - Met. Corr. 1 - Skin Corr. 1 - 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: WGK 1
• flash_point_f: Not applicable
• flash_point_c: Not applicable