应用
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.

备注
Store in cool place. Moisture sensitive. It reacts with water and ethanol. Incompatible with water, acids and bases.

基本信息

MDL
MFCD00000363

EINECS
253-771-2

分子式
C₄H₁₀F₃NS

分子量
161.19

沸点
30-32°/3mm

闪点
23°(73°F)

密度
1.23

折射率
1.4115

灵敏度
Keep Cold. Moisture Sensitive. Store under Nitrogen.

形态
Liquid

溶解性
Miscible with water, ethanol, benzene and acetonitrile.

Beilstein
1849066

GHS危害和防范说明

GHS符号

Hazard Statements
H226-H331-H314-H318
Flammable liquid and vapour.Toxic if inhaled.Causes severe skin burns and eye damage.Causes serious eye damage.

Precautionary Statements
P280-P303+P361+P353-P305+P351+P338-P310a-P402
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. Continue rinsing.IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.Store in a dry place.

安全信息

危险等级
8

包装组
I

危险类别
5-10-14-23-35
Heating may cause an explosion.Flammable.Reacts violently with water.Toxic by inhalation.Causes severe burns.

安全等级
4-8-9-20-23-26-30-36/37/39-45-60
Keep away from living quarters.Keep container dry.Keep container in a well-ventilated place.When using do not eat or drink.Do not breathe gas/fumes/vapour/spray (appropriate wording to be specified by the manufacturer).In case of contact with eyes, rinse immediately with plenty of water and seek medical advice.Never add water to this product.Wear suitable protective clothing, gloves and eye/face protection.In case of accident or if you feel unwell, seek medical advice immediately (show the label where possible).This material and its container must be disposed of as hazardous waste

TSCA
否