Ammonium iron(II) sulfate

Mohr's salt

Weak bluish- green crystals

• 284.05 g · mol -1 ( anhydrous)
• 392.13 g · mol -1 ( as hexahydrate )

Fixed

1.86 g · cm -3

100 ° C ( decomposition)

Well in water ( 269 g · l-1 at 20 ° C)

3250 mg · kg -1 ( LD50, rat, oral)

Template: Infobox chemical / molecular formula search is not possible

Ammonium iron (II ) sulphate ( formerly Mohr's salt ) is the sulphate of ammonium and iron, it forms water- soluble, light green monoclinic crystals. It is commercially available as ammonium iron (II ) sulfate hexahydrate, usually with six molecules of water of crystallization.

Use

Due to its greater oxidation insensitivity compared to iron ( II ) sulfate and the subsequent purer representability it is used for setting the standard solutions of potassium permanganate.