Sulfur trioxide pyridine complex, technical, 48-50% active SO3, Thermo Scientific Chemicals

Product Code	Brand	Quantity	Packaging
10496950	Thermo Scientific Acros 132870250	25 g	Plastic bottle
10376730	Thermo Scientific Acros 132871000	100 g	Plastic bottle
10115643	Thermo Scientific Acros 132875000	500 g	Plastic bottle
11986291	Thermo Scientific Acros 132870025	2.5 kg	Plastic bottle

Description

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

Lewis acid

Chemical Identifiers

• CAS: 26412-87-3
• Molecular Weight (g/mol): 159.16
• InChI Key: UDYFLDICVHJSOY-UHFFFAOYSA-N
• PubChem CID: 168533

• Molecular Formula: C5H5NO3S
• MDL Number: MFCD00012437
• 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
• SMILES: O=S(=O)=O.C1=CC=NC=C1

Specifications

• CAS: 26412-87-3
• Color: White to Beige
• Molecular Formula: C5H5NO3S
• MDL Number: MFCD00012437
• Fieser: 01,1127; 02,393; 03,275; 04,473; 08,391
• Solubility Information: Solubility in water: reacts. Other solubilities: soluble in conc. h2so4,hcl and hclo4,soluble in dmf
• SMILES: O=S(=O)=O.C1=CC=NC=C1
• Molecular Weight (g/mol): 159.16
• Formula Weight: 159.16
• Grade: Technical
• Chemical Name or Material: Sulfur trioxide pyridine complex, 48.8 to 50.3% active SO₃

• Melting Point: 155.0°C
• Infrared Spectrum: Authentic
• Linear Formula: SO₃·C₅H₅N
• Beilstein: 20,19
• 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
• InChI Key: UDYFLDICVHJSOY-UHFFFAOYSA-N
• IUPAC Name: pyridine;sulfur trioxide
• PubChem CID: 168533
• Percent Purity: 48-50% active SO3
• Physical Form: Powder

Safety and Handling

GHS H Statement
Harmful if swallowed.
Causes skin irritation.
Causes serious eye irritation.

GHS P Statement
IF SWALLOWED: rinse mouth.
Do NOT induce vomiting.
Wear protective gloves/protective clothing/eye protection/face protection.
Call a POISON CENTER or doctor/physician if you feel unwell.
IF ON SKIN: Wash with plen

GHS Signal Word: Warning

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Product Identifier

• Sulfur trioxide pyridine complex, 48-50% active SO3

Signal Word

• Warning

Hazard Category

• Acute toxicity Category 4
• Serious eye damage/eye irritation Category 2
• Skin corrosion/irritation Category 2

Hazard Statement

• H315-Causes skin irritation.
• H319-Causes serious eye irritation.
• H302-Harmful if swallowed.

Precautionary Statement

• P280-Wear protective gloves/protective clothing/eye protection/face protection.
• P301+P330+P331-IF SWALLOWED: rinse mouth. Do NOT induce vomiting.
• P302+P352-IF ON SKIN: Wash with plenty of water/.
• P312-Call a POISON CENTER/doctor/if you feel unwell.
• P337+P313-If eye irritation persists: Get medical advice/attention.

RUO – Research Use Only