MilliporeSigma
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1.03965

Supelco

Iron(II) sulfate heptahydrate

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

Synonym(s):
Iron(II) sulfate heptahydrate, Iron vitriol
Empirical Formula (Hill Notation):
FeO4S · 7H2O
CAS Number:
Molecular Weight:
278.01
MDL number:
EC Index Number:
231-753-5

Quality Level

grade

ACS reagent

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 (PO43-): ≤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

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Related Categories

Linkage

Replaces: FX0260-1

Analysis Note

Assay (manganometric): 99.5 - 102.0 %
Identity: passes test
Appearance of solution: passes test
Insoluble matter: ≤ 0.01 %
pH-value (5 %; water): 3.0 - 4.0
Chloride (Cl): ≤ 0.0005 %
Phosphate (PO₄): ≤ 0.001 %
Total nitrogen (N): ≤ 0.001 %
Heavy metals as Pb: ≤ 0.005 %
As (Arsenic): ≤ 0.0002 %
Ca (Calcium): ≤ 0.005 %
Cr (Chromium): ≤ 0.0050 %
Cu (Copper): ≤ 0.001 %
Fe III (Iron III): ≤ 0.02 %
K (Potassium): ≤ 0.002 %
Mg (Magnesium): ≤ 0.002 %
Mn (Manganese): ≤ 0.05 %
Na (Sodium): ≤ 0.02 %
Ni (Nickel): ≤ 0.0050 %
Pb (Lead): ≤ 0.0005 %
Zn (Zinc): ≤ 0.0050 %
Co (Cobalt): ≤ 0.0025 %
Substance not precipitated by ammonium hydroxide: ≤ 0.1 %
Corresponds to ACS,ISO,Reag. Ph Eur

Legal Information

EMSURE is a registered trademark of Merck KGaA, Darmstadt, Germany

Pictograms

Exclamation mark

Signal Word

Warning

Hazard Statements

Hazard Classifications

Acute Tox. 4 Oral - Eye Irrit. 2 - Skin Irrit. 2

Storage Class Code

13 - Non Combustible Solids

WGK

WGK 1

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

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Certificate of Quality

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