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12302

Sigma-Aldrich

Ammonium iron(III) oxalate trihydrate

≥98%

Synonym(s):

Ammonium ferric oxalate, Iron ammonium oxalate

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About This Item

Linear Formula:
(NH4)3[Fe(C2O4)3] · 3H2O
CAS Number:
13268-42-3
Molecular Weight:
428.06
EC Number:
220-952-2
MDL number:
MFCD00150137
UNSPSC Code:
12352100
PubChem Substance ID:
57646981
NACRES:
NA.22

assay

≥98%

form

solid

density

1.78 g/mL at 25 °C (lit.)

anion traces

chloride (Cl-): ≤50 mg/kg
sulfate (SO42-): ≤1000 mg/kg

SMILES string

N.N.N.O.O.O.OC(=O)C(=O)O[Fe](OC(=O)C(O)=O)OC(=O)C(O)=O

InChI

1S/3C2H2O4.Fe.3H3N.3H2O/c3*3-1(4)2(5)6;;;;;;;/h3*(H,3,4)(H,5,6);;3*1H3;3*1H2/q;;;+3;;;;;;/p-3

InChI key

LVWHKVQBJNDDEL-UHFFFAOYSA-K

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General description

Ammonium ferric oxalate trihydrate decomposes completely at 275°C giving Fe2O3 and has been investigated by thermogravimetry and differential thermal analysis.

pictograms

Exclamation mark
GHS07

signalword

Warning

Hazard Classifications

Acute Tox. 4 Dermal - Acute Tox. 4 Oral

wgk_germany

WGK 1

flash_point_f

Not applicable

flash_point_c

Not applicable

ppe

dust mask type N95 (US), Eyeshields, Gloves

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Physicochemical investigation of the decomposition products of ammonium metal carboxylates: ammonium ferric oxalate hydrate.
Hussein GAM, et al.
Journal of Analytical and Applied Pyrolysis, 31, 157-167 (1995)

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