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Ammonium iron(III) sulfate dodecahydrate is a reagent that is used as a mordant in dyeing and textile printing. It is also utilized in analytical chemistry as an iron standard. In biochemistry, ammonium ferric sulfate is used as a catalyst for the generation of free radicals. Increased xanthine oxidase and xanthine oxidoreductase activity in cultured rat cells has been demonstrated in the presence of ammonium ferric sulfate. It may be used as an iron source to restore enzymatic activity in apoenzymes, such as for soybean lipoxygenase.
T.G.Gleason; J.C.Walker. Mossbauer-effect study of the ferroelectric transitions in potassium ferrocyanide trihydrate and ferric ammonium sulfate dodecahydrate. Phys. Rev. 1969, 188, 893
P.A.Montano; H.Shechter. Mossbauer study on ferroelectric properties of ferric ammonium sulfate dodecahydrate (FAS) single crystals. Solid State Communications. 1971, 9, (23),2029-2032
Hazard Statements: H315-H319
Causes skin irritation. Causes serious eye irritation.
Precautionary Statements: P264b-P280-P302+P352-P305+P351+P338-P332+P313-P337+P313-P362
Wash face, hands and any exposed skin thoroughly after handling Wear protective gloves/protective clothing/eye protection/face protection. IF ON SKIN: Wash with plenty of soap and water. IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing. If skin irritation occurs: Get medical advice/attention. If eye irritation persists: Take off contaminated clothing and wash before reuse.