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375616 Sigma-Aldrich

Sulfuric acid, fuming

ACS reagent, 15% free SO3 basis

Synonym: Oleum

  • CAS Number 8014-95-7

  • Linear Formula H2SO4 · (SO3)x

  • Molecular Weight 98.08

  •  Beilstein Registry Number 2037554

  •  MDL number MFCD00137792

  •  PubChem Substance ID 24863393

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Properties

Related Categories Acids, Acids & Bases, Chemical Synthesis, Inorganic Acids, Synthetic Reagents More...
grade   ACS reagent
vapor density   3 (vs air)
vapor pressure   2 mmHg ( 25 °C)
InChI Key   HIFJUMGIHIZEPX-UHFFFAOYSA-N
assay   12.0-17.0% free SO3 basis (ACS specification)
  15% free SO3 basis
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

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Safety & Documentation

Safety Information

Symbol 
Signal word 
Danger
Hazard statements 
Precautionary statements 
Supplemental Hazard Statements 
Reacts violently with water.
RIDADR 
UN1831- class 8 - PG 1- Sulfuric acid, fuming with less than 30 percent free sulfur trioxide
WGK Germany 
1
RTECS 
WS5605000
Protocols & Articles

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