ferrous salt

Radical initiators include potassium persulfate and hydroperoxides in combination with ferrous salts.

Prussian blue can be used in laundry bluing to correct the yellowish tint left by ferrous salts in water.

Treatment of ferricyanide with ferrous salts affords the brilliant, long-lasting pigment Prussian blue, the traditional color of blueprints.

DHA may be prepared, along with glyceraldehyde, by the mild oxidation of glycerol, for example with hydrogen peroxide and a ferrous salt as catalyst.

He is remembered, however, in the context of Fenton's reagent - hydrogen peroxide containing a trace of ferrous salt, used to convert α-hydroxy acids to α-keto acids.

As the carbon dioxide escaped, the ferrous salt absorbed oxygen from the air and the hydrated ferric oxide separated as a "yellowish red turbidity," which settled after a short period, leaving behind a clear brine.

The presence of reddish or orange mottles indicates localised re-oxidation of ferrous salts in the soil matrix, and is often associated with root channels, animal burrows or cracking of the soil material during dry spells.