Description
Dimethyl disulfide, also called DMDS, is a colourless oily liquid that has a distinctive smell, which is used as an agrochemical and food additive. Methanol (CH3S2), it is converted to DMDS when the hydrogens in one of the hydrogen atoms have been substituted with methyldisulfanyl (CH3S2-) groups.
In its natural state, it forms part of the global sulphur cycle.
Applications
It is mainly used in the refinery industry as a sulphur agent to improve the efficiency of olefin furnaces, reduce catalyst consumption, and to increase the rate of thermal cracking and facilitate the conversion of hydrocarbons, as well as to prevent the occurrence of coking on the inner surfaces of reactor coils.