Lawesson reagent , 97% , 19172-47-5

Synonym(s):
2,4-Bis-(4-methoxyphenyl)-1,3-dithia-2,4-diphosphetane 2,4-disulfide;2,4-Bis(4-methoxyphenyl)-2,4-dithioxo-1,3,2,4-dithiadiphosphetane;4-Methoxyphenylthiophosphoric cyclic di(thioanhydride);LR

CAS NO.：19172-47-5

Empirical Formula: C14H14O2P2S4

Molecular Weight: 404.47

MDL number: MFCD00005171

EINECS: 242-855-4

PRODUCT Properties

• Melting point: 228-230 °C(lit.)
• Boiling point: 525.8±60.0 °C(Predicted)
• Density: 1.48±0.1 g/cm3(Predicted)
• storage temp.: Inert atmosphere,2-8°C
• solubility: Chloroform (Slightly)
• form: Powder
• color: White to almost white
• Water Solubility: Decomposition
• Sensitive: Moisture Sensitive
• Merck: 14,5391
• BRN: 1024888
• InChI: InChI=1S/C14H14O2P2S4/c1-15-11-3-7-13(8-4-11)17(19)21-18(20,22-17)14-9-5-12(16-2)6-10-14/h3-10H,1-2H3
• InChIKey: CFHGBZLNZZVTAY-UHFFFAOYSA-N
• SMILES: S1P(=S)(C2=CC=C(OC)C=C2)SP1(=S)C1=CC=C(OC)C=C1
• CAS DataBase Reference: 19172-47-5(CAS DataBase Reference)
• EPA Substance Registry System: 1,3,2,4-Dithiadiphosphetane, 2,4-bis(4-methoxyphenyl)-, 2,4-disulfide (19172-47-5)

Description and Uses

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.

Safety

• Symbol(GHS): GHS02
• Signal word: Danger
• Hazard statements: H261
• Precautionary statements: P231+P232-P422
• Hazard Codes: Xn-F,Xi,Xn,F
• Risk Statements: 20/21/22-15/29-37
• Safety Statements: 8-43-36/37-22-38-7/8
• RIDADR: 3278
• WGK Germany: 3
• F: 13-21
• TSCA: Yes
• HazardClass: 4.3
• PackingGroup: III
• HS Code: 29349990