DiChloromethyl sulphate

By bubbling a current of sulphur trioxide through dichloromethyl ether cooled in ice and salt, besides monochloromethyl chlorosulphonate, dichloromethyl sulphate is formed as follows ... 

Dichloromethyl sulphate is a colourless, odourless liquid with b.p. 96° to 97° C. at 14 mm. of mercury and density 1-60 at ordinary temperatures. It is readily soluble in - the common organic solvents, though only shghtly in petroleum ether. Unlike dimethyl sulphate, it has no physiopathological action. 

Further, a chlorinated derivative of dimethyl sulphate has been prepared, dichloromethyl sulphate (see p. 257). This is a colourless liquid boiling at 96° to 97° C. at 14 mm. of mercury. Unlike dimethyl sulphate, this compound is completely destitute of toxic power. ... 

On heating formaldehyde to about 70° C. with chlorosulphonic acid, dichloromethyl sulphate and also dichloromethyl ether are formed ... 

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