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| | Pyridine sulfur trioxide Basic information |
| | Pyridine sulfur trioxide Chemical Properties |
| Melting point | ~160 °C | | storage temp. | Store below +30°C. | | solubility | Soluble in polar organic solvents. | | form | Powder | | color | White to beige | | Water Solubility | reacts | | Sensitive | Moisture Sensitive | | BRN | 3704116 | | InChI | InChI=1S/C5H5N.O3S/c1-2-4-6-5-3-1;1-4(2)3/h1-5H; | | InChIKey | UDYFLDICVHJSOY-UHFFFAOYSA-N | | SMILES | C1=CC=NC=C1.S(=O)(=O)=O | | CAS DataBase Reference | 26412-87-3(CAS DataBase Reference) | | EPA Substance Registry System | Pyridine sulfur trioxide (26412-87-3) |
| Hazard Codes | C | | Risk Statements | 22-34 | | Safety Statements | 26-36/37/39-45 | | RIDADR | UN 3261 8/PG 2 | | WGK Germany | 3 | | F | 3-10-21 | | Autoignition Temperature | >350 °C | | TSCA | Yes | | HazardClass | 8 | | PackingGroup | II | | HS Code | 29420000 | | Toxicity | LD50 orally in Rabbit: 500 - 2000 mg/kg |
| | Pyridine sulfur trioxide Usage And Synthesis |
| Chemical Properties | white solid | | Uses | Usually used for sulfations of alcohols, sulfonations, deoxygenations and other reductions, oxidations with DMSO. | | Uses | Pyridine-Sulfur Trioxide Complex is used in the sulfation of squid ink polysaccharides (SIPs) as a potential candidate compound for the prevention of tumor metastasis. Pyridine-Sulfur Trioxide Complex
is also used in the preparation and anticoagulation test of sulfated silk fibroin. | | Uses | 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. | | Purification Methods | Wash the solid with a little CCl4, then H2O to remove traces of pyridine sulfate, and dry it over P2O5. [Baumgarten Chem Ber 59 1166 1926, Olah et al. Synthesis 59 1979, Beilstein 20/5 V 184]. |
| | Pyridine sulfur trioxide Preparation Products And Raw materials |
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