Difference between sulphur and unsulphur
- treat with sulphur in order to preserve
- an abundant tasteless odorless multivalent nonmetallic element; best known in yellow crystals; occurs in many sulphide and sulphate minerals and even in native form (especially in volcanic regions)
The beneficial properties of the sulphureous springs which could weaken muscle and articular diseases and skin illnesses, were already well-known by the 5th century B.C.
Iron, in contrast, combines with elements such as oxygen and sulphur to make mineral ores.
The most important of the salts, formed by the combinations of the sulphuric acid, are, first, _sulphat of potash_, formerly called _sal polychrest_: this is a very bitter salt, much used in medicine; it is found in the ashes of most vegetables, but it may be prepared artificially by the immediate combination of sulphuric acid and potash.