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  7. Sulfur trioxide-pyridine complex, 98%, active SO3 ca 48-50%

Sulfur trioxide-pyridine complex, 98%, active SO3 ca 48-50%

Catalog No. p-7081981
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Catalog No. Quantity
AAA1220209 10 g
AAA1220218 50 g
AAA1220230 250 g
AAA122020B 1000 g
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Catalog No. AAA1220209

Supplier: Thermo Scientific Chemicals A1220209

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Description

CAS: 26412-87-3 | C5H5NO3S | 159.16 g/mol

Sulfur trioxide-pyridine complex is used for sulfations of alcohols, sulfonations, deoxygenations and other reductions, oxidations with dimethyl sulfoxide. It is also used as a source of sulfur trioxide especially in the preparation of sulfate esters. Further, it is used as an activating electrophile in a Parikh-Doering oxidation. In addition to this, it is also used in the preparation and anticoagulation test of sulfated silk fibroin.

This Thermo Scientific Chemicals brand product was originally part of the Alfa Aesar product portfolio. Some documentation and label information may refer to the legacy brand. The original Alfa Aesar product / item code or SKU reference has not changed as a part of the brand transition to Thermo Scientific Chemicals.

Applications
Sulfur trioxide-pyridine complex is used for sulfations of alcohols, sulfonations, deoxygenations and other reductions, oxidations with dimethyl sulfoxide. It is also used as a source of sulfur trioxide especially in the preparation of sulfate esters. Further, it is used as an activating electrophile in a Parikh-Doering oxidation. In addition to this, it is also used in the preparation and anticoagulation test of sulfated silk fibroin.

Solubility
Soluble in polar organic solvents.

Notes
Moisture sensitive. Incompatible with strong oxidizing agents.

Chemical Identifiers

CAS 26412-87-3
Molecular Formula C5H5NO3S
Molecular Weight (g/mol) 159.16
MDL Number MFCD00012437
InChI Key UDYFLDICVHJSOY-UHFFFAOYSA-N
Synonym pyridine sulfur trioxide, sulfur trioxide pyridine complex, pyridine; sulfur trioxide, pyridine sulfotrioxide, pyridine compound with sulfur trioxide 1:1, sulfur trioxide, compd. with pyridine, pyridine-sulfur trioxide complex, active sulfure trioxide, sulfur trioxide-pyridine, pyridine-sulfur trioxide
PubChem CID 168533
SMILES O=S(=O)=O.C1=CC=NC=C1

Specifications

Melting Point ∼155°C to 165°C
Quantity 10 g
UN Number UN3261
Beilstein 3704116
Sensitivity Moisture sensitive
Solubility Information Soluble in polar organic solvents.
IUPAC Name pyridine;sulfur trioxide
Formula Weight 159.16
Percent Purity 98%
Chemical Name or Material Sulfur trioxide-pyridine complex, Active SO3 ≈48 to 50%

Safety and Handling

Hazard Category H302-H315-H319
Hazard Statement GHS H Statement
H314-H318-H302
Causes severe skin burns and eye damage.
Causes serious eye damage.
Harmful if swallowed.
Precautionary Statement P264b-P270-P280-P301+P312-P302+P352-P305+P351+P338-P330-P332+P313-P362-P501c
DOTInformation Transport Hazard Class: 8; Packing Group: II; Proper Shipping Name: CORROSIVE SOLID, ACIDIC, ORGANIC, N.O.S.
EINECSNumber 247-683-3
TSCA Yes
Recommended Storage Ambient temperatures; Store under Nitrogen

RUO – Research Use Only