应用
Lawesson's reagent is a thiation agent used to convert carbonyl compounds into thiocarbonyls. It is also used to thionate enones, esters, lactones, amides, lactams and quinones. Further, it is used to prepare thiols from alcohols. It is associated with silver perchlorate and utilized as and oxophilic Lewis acid catalyst for Diels-Alder reaction of dienes with alfa, beta-unsaturated aldehydes.
备注
Incompatible with strong oxidizing agents.
基本信息
MDL
MFCD00005171
EINECS
242-855-4
分子式
C14H14O2P2S4
分子量
404.47
熔点
221-225°
灵敏度
Moisture Sensitive. Ambient temperatures.
形态
Crystalline powder
溶解性
Insoluble in water.
Beilstein
1024888
Merck
14,5391
GHS危害和防范说明
GHS符号
Hazard Statements
H261-H302-H331-H315-H319-H335
In contact with water releases flammable gas.Harmful if swallowed.Toxic if inhaled.Causes skin irritation.Causes serious eye irritation.May cause respiratory irritation.
Precautionary Statements
P231+P232-P261-P280a-P305+P351+P338-P405-P501a
Handle under inert gas. Protect from moisture.Avoid breathing dust/fume/gas/mist/vapours/spray.Wear protective gloves and eye/face protection.IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.Store locked up.Dispose of contents/container in accordance with local/regional/national/international regulations.
安全信息
危险等级
4.3
包装组
II
危险类别
15/29-20/22-36/37/38
Harmful by inhalation and if swallowed.Irritating to eyes, respiratory system and skin.
安全等级
7/8-9-26-33-36/37-43
Keep container tightly closed and dry.Keep container in a well-ventilated place.In case of contact with eyes, rinse immediately with plenty of water and seek medical advice.Take precautionary measures against static discharges.Wear suitable protective clothing and gloves.In case of fire, use ... (indicate in the space the precise type of fire fighting equipment. If water increases risk, odd 'Never use water')
欧盟危险品标志
TSCA
是
