The Sublimation Process: Sublimed Flowers of Sulphur
Everitt Ltd is the Largest UK importer and distributor of sublimed flowers of sulphur - the purest form of sulphur available - what's the secret behind flowers of sulphur? How they are made.
In simple terms purification by sublimation is achieved by conversion of solid sulphur into a gas and condensing the gas to produce only sublimed crystals or flowers of sulphur (rather similar to the distillation process to purify liquids)
The purification of sulphur by " sublimation," with formation of flowers of sulphur, can be carried out easily as the triple point pressure (the temperature and pressure at which a substance can co-exist in equilibrium in the liquid, solid, and gaseous states) of sulphur is low. When sulphur is boiled in an ordinary glass retort the formation of small quantities of flowers of sulphur may be observed in the upper part of the retort before the air has been expelled, but when, after expulsion of the air, the vapour condenses in the neck of the retort, liquid sulphur is formed.
Flowers of sulphur is the purest form of sulphur and is recommended for products intended for internal use.
On a large scale crude sulphur is melted in the pot a (Fig. 1), whence it flows, at a rate regulated by the valve B, through the pipe c into the retort d. It is there boiled and the vapour passes through the wide pipe E into the large brick chamber F. The sulphur vapour diffuses into the air so that its partial pressure rapidly falls and, so long as the temperature of the chamber is well below the melting point of sulphur, condensation with formation of flowers of sulphur takes place. The chamber can be shut off from the retort by means of the valve J, and the chamber F can be accessed through a side door to obtain the flowers of sulphur
Suppliers have attempted to sell powdered sulphur as flowers of sulphur and this deception continues. - see Royal Society of Chemistry website who recently posted a legal note about this deception. Ensure your product is of the highest quality in the nutrition and treatment of humans and animals by buying only genuine flowers of sulphur. Everitt are the main UK importers and distributors of flowers of sulphur and we can provide you with a certificate of analysis as a guarantee your purchase is genuine.
A full certificate of analysis is available on request to verify that all batches comply with BP and EP strictures.
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