Lawesson's reagent
Agent Name
Lawesson's reagent
CAS Number
19172-47-5
Formula
C14-H14-O2-P2-S4
Major Category
Other Classes
Synonyms
2,4-Bis(4-methoxyphenyl)-1,3,2,4-dithiadiphosphetane-2,4-disulfide; 1,3,2,4-Dithiadiphosphetane, 2,4-bis(4-methoxyphenyl)-, 2,4-disulfide; 2,4-Bis(4-methoxyphenyl)-1,3-dithia-2,4-diphosphetane 2,4-disulphide; [ChemIDplus] Lawesson reagent; 2,4-Bis-(4-methoxyphenyl)-1,3-dithia-2,4-diphosphetane 2,4-disulfide; LR; 2,4-Bis(4-methoxyphenyl)-2,4-dithioxo-1,3,2,4-dithiadiphosphetane; 4-Methoxyphenylthiophosphoric cyclic di(thioanhydride); [Sigma-Aldrich MSDS] UN3134
Category
Sulfur Compounds
Description
Off-white, light yellow, or light brown powder with a stench; [Sigma-Aldrich MSDS]
Sources/Uses
Used as a thionating agent to convert carbonyls into thiocarbonyls; [Merck Index]
Comments
Reacts violently with water evolving flammable gases; May cause irritation; [Sigma-Aldrich MSDS]
Biomedical References
Exposure Assessment
Explanatory Notes
The Guide in the Emergency Response Guidebook is for "Water-reactive solid, toxic, n.o.s."
Diseases, Processes, and Activities Linked to This Agent
Other Information
No other related information on this agent was found.