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1.03776 Supelco

Ammonium iron(III) sulfate dodecahydrate

for analysis EMSURE® ACS,ISO,Reag. Ph Eur

Synonym: Alum iron, Ferric ammonium sulfate, Iron alum, Iron(III) ammonium sulfate, Ammonium iron(III) sulfate dodecahydrate

  • CAS Number 7783-83-7

  • Linear Formula (NH4)Fe(SO4)2 · 12H2O

  • Molecular Weight 482.19

  •  MDL number MFCD00150004

  •  EC Index Number 233-382-4

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Properties

Quality Level   300
grade   ACS reagent
Agency/Method   reag. ISO
  reag. Ph. Eur.
assay   99.0-102.0% (iodometric)
form   solid
pH   1.8 (20 °C, 100 g/L in H2O)
mp   39-41 °C
bulk density   750 kg/m3
anion traces   chloride (Cl-): ≤0.0005%
  nitrate (NO3-): ≤0.01%
cation traces   Ca: ≤ 0.01%
  Cu: ≤ 0.001%
  Fe2+: ≤ 0.001%
  K: ≤ 0.005%
  Mg: ≤ 0.001%
  Mn: ≤ 0.005%
  Na: ≤ 0.01%
  Pb: ≤ 0.0005%
  Zn: ≤ 0.001%
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
storage conditions   Store below +15°C.

Description

Linkage

Replaces: FX0205; FX0205-1; FX0205-20; FX0205-3

Analysis Note

Assay (iodometric): 99.0 - 102.0 %
Insoluble matter: ≤ 0.005 %
Chloride (Cl): ≤ 0.0005 %
Nitrate (NO₃): ≤ 0.01 %
Cu (Copper): ≤ 0.001 %
Fe II (Iron II): ≤ 0.001 %
Ca (Calcium): ≤ 0.01 %
K (Potassium): ≤ 0.005 %
Mg (Magnesium): ≤ 0.001 %
Mn (Manganese): ≤ 0.005 %
Na (Sodium): ≤ 0.01 %
Pb (Lead): ≤ 0.0005 %
Zn (Zinc): ≤ 0.001 %
Corresponds to ACS, ISO, Reag. Ph. Eur.

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