Sulfur trioxide-triethylamine complex （CAS# 761-01-3)
| Hazard Symbols | C – Corrosive |
| Risk Codes | 34 – Causes burns |
| Safety Description | 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.) |
| UN IDs | UN 3261 8/PG 2 |
| WGK Germany | 3 |
| FLUKA BRAND F CODES | 3-10-21 |
| HS Code | 29211990 |
| Hazard Class | 8 |
| Packing Group | II |
Introduction
Sulfur trioxide-triethylamine complex(Sulfur trioxide-triethylamine complex) is an organic sulfur compound. Its chemical formula is (C2H5)3N · SO3. The complex has the following properties:
1. Structural stability: The complex is solid at room temperature and has good stability.
2. catalyst: the complex is often used as a catalyst for acylation, esterification, amidation and other reactions in organic synthesis.
3. High activity: Sulfur trioxide-triethylamine complex is a highly active sulfate group donor, which can effectively catalyze multiple reactions in organic synthesis.
4. solvent of ionic liquid: Sulfur trioxide-triethylamine complex can be used as solvent of ionic liquid in some reactions, providing good catalytic environment.
The preparation methods of the complex are as follows:
1. Direct mixing method: directly mix sulfur trioxide and triethylamine in a certain molar ratio, stir and react at an appropriate temperature, and finally get Sulfur trioxide-triethylamine complex.
2. sedimentation method: first sulfur trioxide and triethylamine are dissolved in an appropriate solvent, the commonly used solvent is carbon chloride or benzene. The complex is present in solution in the form of a solution phase and is separated and purified by settling.
About safety information:
1. Sulfur trioxide-triethylamine complex is corrosive and irritating to skin and eyes. Wear protective gloves, glasses and chemical protective clothing during operation.
2. The compound can produce toxic gases at high temperatures. Attention should be paid to ventilation conditions and avoid contact with combustibles.
3. During storage and use, Sulfur trioxide-triethylamine complex should be isolated from water, oxygen and other oxidants to avoid violent reactions.
Before performing any experimental operation, please be sure to understand the nature and safety information of the compound in detail, and follow the corresponding operating procedures and safety measures.
