221260

Ammonium iron(III) sulfate dodecahydrate

ACS reagent, 99%

• Synonym(s): Ammonium ferric sulfate dodecahydrate
• 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

Properties

• grade: ACS reagent
• 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

Description

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.

Safety Information

• pictograms: GHS05
• signalword: Danger
• hcodes: H318
• pcodes: P280 - P305 + P351 + P338
• Hazard Classifications: Eye Dam. 1
• Storage Class: 13 - Non Combustible Solids
• wgk_germany: WGK 1
• flash_point_f: Not applicable
• flash_point_c: Not applicable