Ammonium iron(III) sulfate dodecahydrate (CAS 7783-83-7)

(Based on popularity)

Application:	An oxidation resistant analytical standard
CAS Number:	7783-83-7
Purity:	99%
Molecular Weight:	482.19
Molecular Formula:	FeH₄NO₈S₂•12H₂O

Ordering Information

Product Name	Catalog #	Unit	Price
Ammonium iron(III) sulfate dodecahydrate	sc-202941	25 g	$39
Ammonium iron(III) sulfate dodecahydrate	sc-202941A	500 g	$59
Ammonium iron(III) sulfate dodecahydrate	sc-202941B	2.5 kg	$188

Description

Ammonium iron(III) sulfate dodecahydrate is often employed as an analytical standard, and has been used in a variety of other applications from nanomaterials to general redox reactions. This product is much less affected by oxygen in the air than iron(II) sulfate (sc-228358), making it more desirable for titration purposes, where iron(II) might be oxidized to iron(III). The oxidation of iron(II) to iron(III) is pH dependent, and the reaction occurs more rapidly at higher pH; this product lowers the pH of solutions slightly, thereby preventing oxidation from occurring.

Technical Information

Appearance:	Light yellow to purple powder
Physical State:	Solid
Solubility:	Soluble in water:hydrochloric acid (99:1)
Storage:	Store at room temperature

Safety and Reference Information

PubChem CID:	16211144
MDL Number:	MFCD00150004
EC Number:	233-382-4
SMILES:	N.O.O.O.O.O.O.O.O.O.O.O.O.OS(=O)(=O)[O-].[O-]S(=O)(=O)[O-].[Fe+3]

For Research Use Only. Not Intended for Diagnostic or Therapeutic Use.

References

1. Surmann, P., et al. 1996. Anal Bioanal Chem. 356: 192-196. PMID: 15048351
2. Summers, D.P. 2005. Orig Life Evol Biosph. 35: 299-312. PMID: 16228644
3. Suzuki, T., et al. 2010. J Nanosci Nanotechnol. 10: 3924-3928. PMID: 20355392

SDS

Datasheet/SDS