The high purity dimethyl fumarate contains no more than trace amounts of dimethyl sulfate.

Sulfuric acid, dimethyl ester (CAS Registry No. 77-78-1), hereafter referred to as “dimethyl sulfate”; and

In 1900 he introduced dimethyl sulfate as an alkylating agent.

Diethyl sulfate and dimethyl sulfate are subject to various risk management actions internationally.

They are produced by quaternizing corresponding carboxylic acid alcanol amine esters, preferably with methyl chloride or dimethylsulphate.

Exposure to diethyl sulfate is expected to be very low and occur predominantly through inhalation of air.

Preferred quaternary ammonium compounds include dialkyl dimethyl ammonium salts such as di(hydrogenated)tallow dimethyl ammonium chloride and/or di(hydrogenated)tallow dimethyl ammonium methyl sulfate.

Exposure to dimethyl sulfate is expected to be very low and occur predominantly through inhalation of ambient air.

90459-62-4 Octadecanoic acid, reaction products with diethylenetriamine, di-Me sulfate-quaternized

A process for preparing theobromine by methylating 3-methyl xanthine disodium salt comprises reacting 3-methyl xanthine disodium salt with dimethyl sulfate by using acetone as solvent in the presence of sodium carbonate and acidifying.

[0362] the copolymers of acrylamide and dimethylaminoethyl methacrylate quaternized with dimethyl sulfate, or with a dimethyl halogenide such as that sold under the name HERCOFLOC by the company HERCULES,

copolymers of acrylamide and of dimethylaminoethyl methacrylate quaternized with dimethyl sulfate or with a dimethyl halide, such as the product sold under the name Hercofloc by the company Hercules,

[0181] copolymers of acrylamide and of dimethylaminoethyl methacrylate quaternized with dimethyl sulfate or with a dimethyl halide, such as the product sold under the name HERCOFLOC by the company Hercules,

Alternatively, it is prepared from the reaction of dimethyl sulfate with potassium iodide in the presence of calcium carbonate:[6]

copolymers of acrylamide and of dimethylaminoethyl methacrylate quaternized with an entity chosen from dimethyl sulfate and dimethyl halides, such as the product sold under the name Hercofloc by the company Hercules,