Ammonium iron (II) sulfate
Structural formula | |||||||||||||||||||
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General | |||||||||||||||||||
Surname | Ammonium iron (II) sulfate | ||||||||||||||||||
other names |
Moroccan salt |
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Molecular formula | (NH 4 ) 2 Fe (SO 4 ) 2 | ||||||||||||||||||
Brief description |
pale bluish green crystals |
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properties | |||||||||||||||||||
Molar mass | |||||||||||||||||||
Physical state |
firmly |
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density |
1.86 g cm −3 |
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Melting point |
100 ° C (decomposition) |
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solubility |
good in water (269 g l −1 at 20 ° C) |
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safety instructions | |||||||||||||||||||
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Toxicological data | |||||||||||||||||||
As far as possible and customary, SI units are used. Unless otherwise noted, the data given apply to standard conditions . |
Ammonium iron (II) sulfate (formerly also Mohr 's salt ) is the sulfate of ammonium and iron , it forms water-soluble, light green monoclinic crystals. It is usually available commercially as ammonium iron (II) sulfate hexahydrate with six molecules of crystal water . It is a double salt from the group of Tutton salts .
use
Due to its lower sensitivity to oxidation compared to iron (II) sulphate and the consequent purer displayability, it is used to adjust potassium permanganate standard solutions.
Individual evidence
- ↑ a b Entry on ammonium iron (II) sulfate. In: Römpp Online . Georg Thieme Verlag, accessed on July 15, 2014.
- ↑ a b c d e Entry on ammonium iron (II) sulfate in the GESTIS material database of the IFA , accessed on December 19, 2019(JavaScript required) .
- ↑ a b Data sheet ammonium iron (II) sulfate (PDF) from Merck , accessed on January 19, 2011.