Ferro(II) solfato eptaidrato, per analisi, ExpertQ®, ACS, ISO, Reag. Ph Eur

- Synonyms: Iron vitriol
- FeSO4·7H2O
- M = 278,02 g/mol
- CAS [7782-63-0]
- EINECS-No.: 231-753-5
- Solub. in water: (20 ºC): 665 g/l
- Melting point: > 60 ºC (release of crystalline water)
- LD 50 (oral, rat): 319 mg/kg (anhydrous substance)
- GHS-signal word: Warning
- GHS-H sentences: H302 - H315 - H319
- GHS-P sentences: P280 - P305+P351+P338 - P321 - P301+P312 - P332+P313 - P501a
- Tariff number: 2833 29 80 80
- Applications: analytical chemistry, determining COD.

SPECIFICATIONS
assay (cerimetric): 98,0 - 105,0 %
assay (KMnO4): min. 99,0 %
Identification iron: passes test
Identification sulfates: passes test
insoluble matter: max. 0,01 %
pH (5 %, H2O): 3,0 - 4,0
chlorides (Cl): max. 10 ppm
phosphates (as PO4): max. 10 ppm
total nitrogen (as N): max. 0,001 %
arsenic (As): max. 2 ppm
calcium (Ca): max. 10 ppm
chromium (Cr): max. 50 ppm
cobalt (Co): max. 25 ppm
copper (Cu): max. 25 ppm
iron (III) (Fe (III)): max. 0,025 %:
lead (Pb): max. 25 ppm
magnesium (Mg): max. 20 ppm
manganese (Mn): max. 0,05 %
nickel (Ni): max. 50 ppm
potassium (K): max. 20 ppm
sodium (Na): max. 200 ppm
zinc (Zn): max. 50 ppm
substances not precipitated by ammonium hydroxide: max. 0,1 %