Iron(II) sulfate heptahydrate

grade

ACS reagent

Quality Level

300

Agency

reag. ISO
reag. Ph. Eur.

product line

EMSURE^®

Assay

99.5-102.0% (manganometric)

form

solid

potency

319 mg/kg LD₅₀ oral (Rat)

impurities

≤0.01% Insoluble matter

pH

3-4 (20 °C 50 g/L in H₂O)

mp

>60 °C (Elimination of water of crystallisation)

density

1.89 g/cm³ at 20 °C

bulk density

600 kg/m³

anion traces

chloride (Cl^–): ≤0.0005%
phosphate (PO₄^3-): ≤0.001%

cation traces

As: ≤0.0002%
Ca: ≤0.005%
Co: ≤0.0025%
Cr: ≤0.0050%
Cu: ≤0.001%
Fe³⁺: ≤0.02%
K: ≤0.002%
Mg: ≤0.002%
Mn: ≤0.05%
N: ≤0.001%
Na: ≤0.02%
Ni: ≤0.0050%
Pb: ≤0.0005%
Zn: ≤0.0050%
heavy metals (as Pb): ≤0.005%

storage temp.

15-25°C

InChI

1S/Fe.H2O4S.7H2O/c;1-5(2 3)4;;;;;;;/h;(H2 1 2 3 4);7*1H2/q+2;;;;;;;;/p-2

InChI key

SURQXAFEQWPFPV-UHFFFAOYSA-L