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221260

Sigma-Aldrich

Ammonium iron(III) sulfate dodecahydrate

ACS reagent, 99%

Synonym(s):

Ammonium ferric sulfate dodecahydrate

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About This Item

Linear Formula:
NH4Fe(SO4)2 · 12H2O
CAS Number:
7783-83-7
Molecular Weight:
482.19
EC Number:
233-382-4
MDL number:
MFCD00150004
UNSPSC Code:
12352302
PubChem Substance ID:
329752253
NACRES:
NB.24

grade

ACS reagent

Quality Level

200

Assay

98.5-102.0% (ACS specification)
99%

form

crystals

reaction suitability

reagent type: catalyst
core: iron

impurities

≤0.01% insolubles
≤0.05% not NH4OH pptd.

pH

1 (25 °C, 482.2 g/L)

mp

39-41 °C (lit.)

anion traces

chloride (Cl-): ≤0.001%
nitrate (NO3-): ≤0.01%

cation traces

Cu: ≤0.003%
Fe2+:, passes test (limit about 0.001%)
Zn: ≤0.003%

storage temp.

2-8°C

SMILES string

N.O.O.O.O.O.O.O.O.O.O.O.O.[Fe+3].OS([O-])(=O)=O.[O-]S([O-])(=O)=O

InChI

1S/Fe.H3N.2H2O4S.12H2O/c;;2*1-5(2,3)4;;;;;;;;;;;;/h;1H3;2*(H2,1,2,3,4);12*1H2/q+3;;;;;;;;;;;;;;;/p-3

InChI key

LCPUDZUWZDSKMX-UHFFFAOYSA-K

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Application

Ammonium ferric sulfate dodecahydrate may be used as a catalyst to synthesize:
  • Isoamyl acetate from acetic acid and isoamyl alcohol.
  • 2-Amino-5-(5-nitro-2-thienyl)-1,3,4-thiadiazole from 5-nitrothiophene-2-carboxaldehyde thiosemicarbazone via oxidative cyclization.

Pictograms

Corrosion
GHS05

Signal Word

Danger

Hazard Statements

H318

Precautionary Statements

P280 - P305 + P351 + P338

Hazard Classifications

Eye Dam. 1

WGK

WGK 1

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Certificates of Analysis (COA)

Search for Certificates of Analysis (COA) by entering the products Lot/Batch Number. Lot and Batch Numbers can be found on a product’s label following the words ‘Lot’ or ‘Batch’.

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Antituberculosis agents VIII: Synthesis and in vitro antimycobacterial activity of alkyl a-[5-(5-nitro-2-thienyl)-1, 3, 4-thiadiazole-2-ylthio] acetates.
Foroumadi A, et al.
Il Farmaco (Societa Chimica Italiana : 1989), 58(11), 1073-1076 (2003)
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Contemporary Chemical Industry (2006)
Multi-pumping flow system for the determination, solid-phase extraction and speciation analysis of iron.
Pons C, et al.
Analytica Chimica Acta, 550(1), 33-39 (2005)
Tomasz Kleszczewski et al.
Journal of pharmaceutical and biomedical analysis, 29(4), 755-759 (2002-07-03)
A method for spectrophotometric determination of L-ascorbic acid (vitamin C) in tissues by flow injection analysis is reported. The procedure is based on the oxidation of analyse with iron(III) and 2,2'-dipyridyl. Concentrations of vitamin C in the range of 0.5-20
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