2,4-Bis(4-methoxyphenyl)-2,4-dithioxo-1,3,2,4- dithiadiphosphetane

LC563 2,4-Bis(4-methoxyphenyl)-2,4-dithioxo-1,3,2,4- dithiadiphosphetane
for synthesis

Product information
Synonyms	2,4-Bis(4-methoxyphenyl)-1,3,2,4-dithiadiphosphetane 2,4-disulfide, Lawesson’s reagent, p-Methoxyphenylthiophosphine sulfide (dimer)
Hill Formula	C₁₄H₁₄O₂P₂S₄
Chemical formula	4-(CH₃O)C₆H₄-P₂S₄-C₆H₄-4-(OCH₃)
HS Code	2931 00 99
EC number	242-855-4
Molar mass	404.47 g/mol
CAS number	19172-47-5

Safety information
R Phrase	R 15/29 Contact with water liberates toxic, extremely flammable gas.
S Phrase	S 7/8-43 Keep container tightly closed and dry.In case of fire, use powder extinguisher. Never use water.
Categories of danger	highly flammable
Hazard Symbol	Flammable
Storage class	4.3 Materials that form flammble gases in contact with water
WGK	WGK 3 highly water endangering
Disposal	25 Red phosphorus must not come into contact with oxidizing substances: Container I. Phosphorus compounds should be oxidized under an inert gas in an efficient hood with the front screen closed. From each gram of phosphorus compound measure out a 100-ml aliquot of 5 % Sodium hypochlorite solution (Cat.No. 105614) containing 5 ml of 50 % Sodium hydroxide solution (Cat. No. 106462) and carefully add the substance solution to be neutralized, a drop at a time, cooling with ice. Add Calcium hydroxide (Cat.No. 102047) and filter off the precipitated phosphates. Precipitate: Container I. Aqueous solutions: Container D.

Transport information
Declaration (transport by sea) IMDG-Code	UN 3464 ORGANOPHOSPHORUS COMPOUND, TOXIC, SOLID, N.O.S.(2,4-BIS(4-METHOXYPHENYL)-2,4-DITHIOXOL-1,3,2,4-DITHIA DIPHOSPHETANE), 6.1, II
Declaration (transport by air) IATA-DGR	UN 3464 ORGANOPHOSPHORUS COMPOUND, TOXIC, SOLID, N.O.S.(2,4-BIS(4-METHOXYPHENYL)-2,4-DITHIOXOL-1,3,2,4-DITHIA DIPHOSPHETANE), 6.1, II