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26412-87-3

Basic Information
CAS No.: 26412-87-3
Name: Pyridine sulfur trioxide
Article Data: 11
Molecular Structure:
Molecular Structure of 26412-87-3 (Pyridine sulfur trioxide)
Formula: C5H5N.SO3
Molecular Weight: 159.166
Synonyms: Sulfur trioxide, compd. with pyridine (1:1);Sulphur trioxide pyridine (1:1);Pyridine sulfotrioxide;Pyridine-sulfur trioxide complex;Pyridine SO3 (1:1) complex;Pyridine, compd. with sulfur trioxide (1:1) (8CI)(9CI);Pyridine compound with sulfur trioxide (1:1);Pyridine sulfur trioxide complex;
EINECS: 247-683-3
Melting Point: ~160 °C
Boiling Point: 115.3 °C at 760 mmHg
Flash Point: 20 °C
Solubility: reacts with water
Appearance: white solid
Hazard Symbols: CorrosiveC
Risk Codes: 22-34
Safety: 26-36/37/39-45
Transport Information: UN 3261 8/PG 2
PSA: 96.19000
LogP: 1.37340
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Chemistry

Molecular Structure:

Molecular Formula: C5H5NO3S
Molecular Weight: 159.1631
IUPAC Name: Pyridine; sulfur trioxide
Synonyms of Pyridine sulfur trioxide (CAS NO.26412-87-3):  EINECS 247-683-3 ; NSC 75831 ; Pyridine compound with sulfur trioxide (1:1) ; Pyridine sulfotrioxide ; Pyridine, compd. with sulfur trioxide (1:1) ; Pyridine-sulfur trioxide complex ; Pyridine-sulfur trioxide complex (1:1) ; Sulfur trioxide pyridine complex ; Pyridine, compd. with sulfur trioxide (1:1) (8CI)(9CI) ; Sulfur trioxide, compd. with pyridine (1:1) ; Sulphur trioxide pyridine (1:1)
CAS NO: 26412-87-3
Product Categories: Pyridines ; Oxidation ; Sulfur Compounds (for Synthesis) ; Synthetic Organic Chemistry
Melting point: ~160 °C 
H bond acceptors: 1 
Polar Surface Area: 12.89 Å2
Flash Point: 20 °C
Enthalpy of Vaporization: 35.09 kJ/mol
Boiling Point: 115.3 °C at 760 mmHg
Vapour Pressure: 22.8 mmHg at 25°C

Uses

  Pyridine sulfur trioxide (CAS NO.26412-87-3) is used as sugar anhydride sodium intermediate. And it also can be used as a free agent, organic antioxidant and sulfating etc.

Safety Profile

Hazard Codes of Pyridine sulfur trioxide (CAS NO.26412-87-3): CorrosiveC
Risk Statements: 22-34 
R22: Harmful if swallowed. 
R34: Causes burns.
Safety Statements: 26-36/37/39-45 
S26: In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. 
S36/37/39: Wear suitable protective clothing, gloves and eye/face protection. 
S45: In case of accident or if you feel unwell, seek medical advice immediately (show the label whenever possible.)
RIDADR: UN 3261 8/PG 2
WGK Germany: 3
F: 3-10-21
HazardClass: 8
PackingGroup: II
HS Code: 29420000