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]

Exposure Assessment
Explanatory Notes

The Guide in the Emergency Response Guidebook is for "Water-reactive solid, toxic, n.o.s."

Links to Other NLM Databases
Toxicity Information

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Other Information

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