Epsom salts

(redirected from MgSO4 7H20)
Also found in: Dictionary, Thesaurus, Medical.

Epsom salts,

common name for magnesium sulfate heptahydrate, MgSO4·7H2O, a water-soluble bitter-tasting compound that occurs as white or colorless needle-shaped crystals. It was first prepared from the waters of mineral springs at Epsom, England; it also occurs as the mineral epsomite. Epsom salts is used medicinally as a purgative; it is also used in leather tanning, mordant dyeing, and as a filler in cotton goods and paper.

Epsom salts

a medicinal preparation of hydrated magnesium sulphate, used as a purgative