Dimethyl Disulfide (DMDS) An Effective Product In The Sulfiding Process

Product Identification:
Chemical Formula : C2H6S2
CAS# : 624-92-0
Molecular Weight : 94.2 g/mole

Physical and Chemical Properties:
Physical State                      : Light yellow liquid with stimulate odor
Density (20/40C)                : 1.062
Purity, wt%                         : 99.0 min.
Sulfur Content, wt%           : 68.1 ± 0.5
Moisture, %                        : 0.06 max.
Methyl Mercaptan, %          : 0.05 max.
Cloud Point, 0C                  : ≤ -5
Flash Point, 0C                   : 16
Boiling Point, 0C                : 108 – 1100C
Refractive Index                 : 1.526 (200C), 1.508 (300C)
Solubility                            : Slightly soluble in water - 2.500 ppm at 200C
Soluble in light alcohols, ethers, aliphatic and aromatic hydrocarbons

Dimethyl Disulfide is a stable pale yellow liquid which works as an effective product in the sulfiding process because of its high sulphur content. It is soon becoming the sulfiding industry’s sulfiding reagent of choice because it offers more sulphur per pound of reagent when compared to its nearest competitor Dimethyl Sulfide.

The uses of Dimethyl Disulfide in the industry are many and vaired according to the application it is used in. It is used in the preparation of Para (methylthio) phenol which is the title compound used in the production of various pesticides by reacting the dimethyl disulfide and chlorine with borontriflouride phenolate. Thiophene and dimethyl disulfide are blended with combustible hydrocarbon fuel gas to impart a gassy odor to the fuel gas. Dimethyl disulfide is used in each of these patents as a sulfiding reagent to control catalyst activity. The sulfide is used to either pretreat the catalyst or is fed in dilute amounts on to the catalyst bed with the reactants. Ortho (methylthio) phenol is produced from the reaction of dimethyl disulfide and phenol in the presence of aluminum phenoxide. Dimethyl disulfide is used as a sulfur donor in the presence of a variety of reagents to produce the intermediate methyl thionophosphoric acid dichlorides. Dimethyl disulfide is used to alpha substitute 2-methylfuran-acrolein to produce a food stuff used inconcentrations from 0.02 ppm up to 50 ppm. Dimethyl Disulfide also works as an effective product for operators in the petrochemicals industry who must protect their steam-cracking coils against the formation of coke and carbon monoxide.

Global Trust Enterprises FZCO is currently supplying world class Dimethyl Disulfide to many petrochemical plants in this region. They are a leading general trading company in Dubai who have been meeting the varied needs of their client in the steel, aluminium and petrochemical industries in the Middle East and the North Africa region. They are one of the largest suppliers in the region with a large global network sourcing chemicals, equipment, spares and industrial greases and lubricants from world renowned manufacturers offering them nothing but the best. They will even help out when their clients require savings in cost to make their end product competitive by working from concept to completion and giving them the best possible alternatives in supplies consisting of equivalent quality. To know more about Global Trust Enterprises, kindly visit them online at: www.globaltrustenterprises.com

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