DMS (Dimethyl Sulfide)

Dimethyl Sulfide (DMS) is used in the petrochemical industry, in the synthesis of fine chemicals, and as a food flavoring agent. Gaylord Chemical offers three product grades which are manufactured to meet the requirements of these very different applications.

DMS Product Grades

DMS Exact-S™ Grade is the standard olefins sulfidation agent in North America. It is added to gas and liquid feedstocks as they enter steamcracking furnaces. DMS Exact-S™ Grade regulates the formation of carbon monoxide and controls the rate at which coke develops.

DMS Exact-S™ Grade is manufactured in a way to minimize feedstock contaminant impurities which cause problems in steamcracking furnaces and downstream processes. These include carbon disulfide, methyl mercaptan, carbonyl sulfide and problematic metals.

Key Applications

DMS Exact-S™ Grade is also used as a presulfiding agent for the treatment of hydrodenitrification (HDN), Hydrodesulfurization (HDS) and cracking catalysts.

DMS FNF Grade is a dimethyl sulfide product suitable for use as a flavoring and fragrance component. DMS FNF Grade is the highest purity dimethyl sulfide product available. It is manufactured to minimize impurities which are inappropriate in consumer formulations.

Key Applications

Dimethyl Sulfide (DMS) is used as a constituent of various fragrances. Additionally, DMS is a component of specific flavors for dairy products and for enhancing corn-related flavors. It is listed in the US Food Chemical Codex, and as a synthetic flavoring substance and adjuvant (CFR 21 §172.515).

DMS Industrial Grade has applications as a reagent, in the production of reducing (BH3-DMS adduct) and epoxidation reagents (trimethylsulfonium salts). DMS Industrial Grade product is available for such applications in which there may be less concern about

Key Applications

DMS Industrial Grade also plays a role in synthesis, both as a solvent and as a reducing agent. Alkylated derivatives of DMS are useful epoxidation reagents. Many organic reactions utilize a borane-Dimethyl Sulfide complex.

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