Name: Diethylsulfate.

Synonym:ParecoxibSodiumImpurity28;Diaethylsulfat;Diethylesterkyselinysirove;diethylesterkyselinysirove;diethyltetraoxosulfate;DS;Ethylsulpate;sulfatediethylique.

CAS No: 64-67-5.

Molecular formula: C4H10O4S.

Molecular weight: 154.18.

Appearance: colorless transparent liquid.

Purity: 99%.

Melting point:-24 °C.

Boiling point: 208 °C (lit.).

Density: 1.177 g/mL at 25 °C (lit.).

Vapor density: 5.3 (vs air).

Vapor pressure: < 0.01 mm Hg (20 °C).

Refractive index: n20amp D 1.399 (lit.).

Uses: diethyl sulfate is a highly reactive ethyl agent, which is widely used in the production of dyes, pharmaceuticals and other fine chemical products. It is also used in the synthesis of quaternary ammonium salt, as dehydrating agent, volatile oil extractant and so on.