ferrous sulphate

British  

noun

1. Systematic name: iron (II) sulphate.  Also called: copperas.   green vitriol.  an iron salt with a saline taste, usually obtained as greenish crystals of the heptahydrate, which are converted to the white monohydrate above 100°C: used in inks, tanning, water purification, and in the treatment of anaemia. Formula: FeSO 4

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Example Sentences

Tea and coffee were adulterated with sand, chicory, and spent grounds treated in ferrous sulphate and sheep’s dung.

From The Guardian

Faraday compared the intensity of its action with that of ferrous sulphate, and this led to an explanation of the diurnal variations of the compass-needle based on the sun's heat diminishing the magnetic permeability of the oxygen of the air.

From Project Gutenberg

From this last term comes the modern melanterite, native hydrous ferrous sulphate.

From Project Gutenberg

The specific gravity of gold obtained by precipitation from solution by ferrous sulphate is from 19.55 to 20.72.

From Project Gutenberg

The precipitants in use are: ferrous sulphate, charcoal and sulphuretted hydrogen, either alone or mixed with sulphur dioxide; the use of copper and iron sulphides has been suggested, but apparently these substances have achieved no success.

From Project Gutenberg