Thermo Scientific Chemicals Lawesson's Reagent, 97%

Catalog No.	Quantity
AAA1453006	5 g
AAA1453014	25 g
AAA1453022	100 g
AAA1453036	500 g

Catalog No. AAA1453006 Supplier Thermo Scientific Chemicals Supplier No. A1453006

Description

CAS: 19172-47-5 | C14H14O2P2S4 | 404.452 g/mol

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.

This Thermo Scientific Chemicals brand product was originally part of the Alfa Aesar product portfolio. Some documentation and label information may refer to the legacy brand. The original Alfa Aesar product / item code or SKU reference has not changed as a part of the brand transition to Thermo Scientific Chemicals.

Applications
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.

Solubility
Insoluble in water.

Notes
Incompatible with strong oxidizing agents.

Specifications

Chemical Identifiers

• CAS: 19172-47-5
• Molecular Formula: C14H14O2P2S4
• Molecular Weight (g/mol): 404.452
• MDL Number: MFCD00005171
• InChI Key: CFHGBZLNZZVTAY-UHFFFAOYSA-N
• Synonym: lawesson's reagent, lawesson reagent, 2,4-bis 4-methoxyphenyl-1,3,2,4-dithiadiphosphetane 2,4-disulfide, unii-a4125mq8rx, 1,3,2,4-dithiadiphosphetane, 2,4-bis 4-methoxyphenyl-, 2,4-disulfide, 2,4-bis 4-methoxyphenyl-2,4-dithioxo-1,3,2,4-dithiadiphosphetane, 2,4-bis 4-methoxyphenyl-1,3,2,4-dithiadiphosphetane-2,4-disulfide, 2,4-bis 4-methoxyphenyl-1,3-dithia-2,4-diphosphetane 2,4-disulfide, 2,4-bis 4-methoxyphenyl-1,3-dithia-2,4-diphosphetane 2,4-disulphide, 4-methoxyphenylthiophosphoric cyclic di thioanhydride
• PubChem CID: 87949
• IUPAC Name: 2,4-bis(4-methoxyphenyl)-2,4-bis(sulfanylidene)-1,3,2$l^{5},4$l^{5}-dithiadiphosphetane
• SMILES: COC1=CC=C(C=C1)P2(=S)SP(=S)(S2)C3=CC=C(C=C3)OC

• Melting Point: 221°C to 225°C
• Quantity: 5 g
• UN Number: UN3134
• Beilstein: 1024888
• Sensitivity: Moisture sensitive
• Merck Index: 14,5391
• Solubility Information: Insoluble in water.
• Formula Weight: 404.47
• Percent Purity: 97%
• Chemical Name or Material: Lawesson's Reagent

Safety and Handling

Hazard Category	H261
Hazard Statement	GHS H Statement H331-H261-H302-H315-H319-H335 Toxic if inhaled. In contact with water releases flammable gas. Harmful if swallowed. Causes skin irritation. Causes serious eye irritation. May cause respiratory irritation.
Precautionary Statement	P223-P231+P232-P280-P335+P334-P370+P378q-P501c
DOTInformation	Hazard Class: 4.3; Packaging Group: II
EINECSNumber	242-855-4
TSCA	Yes
Recommended Storage	Ambient temperatures

SDS

RUO – Research Use Only