Alfa Aesar Diethylaminosulfur trifluoride, 95%
Manufacturer: Alfa Aesar A1199206
Diethylaminosulfur trifluoride (DAST) is used as a precursor to prepare 2,6-dimethoxybenzoyl fluoride and 2-thiazolines. It is a useful fluorinating agent used for a variety of compounds including alcohols, thioethers, alkenols and cyanohydrins. It also serves as a catalyst for Friedel-Crafts allylation reaction using tertiary cyclopropyl silyl ethers and in the rearrangement of homoallylic alcohols to unsaturated aldehydes. It plays an important role for gem difluorination of ketopipecolinic acids.
Miscible with water, ethanol, benzene and acetonitrile.
Store in cool place. Moisture sensitive. It reacts with water and ethanol. Incompatible with water, acids and bases.
|30° to 32°C (3mmHg)|
Safety and Handling
SDS & Safety Documents
GHS H Statement
Toxic if inhaled.
Causes severe skin burns and eye damage.
Causes serious eye damage.
Flammable liquid and vapor.
GHS P Statement
Wear protective gloves/protective clothing/eye protection/face protection.
IF ON SKIN (or hair): Remove/Take off immediately all contaminated clothing. Rinse skin with water/shower.
IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do.
Immediately call a POISON CENTER or doctor/physician.
Store in a dry place.
DOTInformation : Transport Hazard Class: 8; Packing Group: I; Proper Shipping Name: CORROSIVE LIQUIDS, FLAMMABLE, N.O.S.
Recommended Storage : 2°C to 8°C