Synonym:
Oleum
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CAS Number 8014-95-7
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Linear Formula H2SO4 · (SO3)x
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Molecular Weight 98.08
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Beilstein Registry Number 2037554
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MDL number MFCD00137792
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PubChem Substance ID 329756351
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Popular Documents: Specification Sheet (PDF)
Properties:
Related Categories |
Acids,
Acids & Bases,
Analytical Reagents,
Analytical Reagents for General Use,
Analytical/Chromatography,
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grade
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reagent grade
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vapor density
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3 (vs air)
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vapor pressure
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2 mmHg ( 25 °C)
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InChI Key
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HIFJUMGIHIZEPX-UHFFFAOYSA-N
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assay
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20% free SO3 basis
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density
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1.925 g/mL at 25 °C(lit.)
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Description:
Packaging
500 g in glass bottle
Application
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
General description
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.
Safety:
Symbol
GHS05, GHS06
Hazard statements
H314-H330-H335
Precautionary statements
P260-P280-P284-P305 + P351 + P338-P310
Supplemental Hazard Statements
Reacts violently with water.
RIDADR
UN1831- class 8 - PG 1- Sulfuric acid, fuming with less than 30 percent free sulfur trioxide