Ferrous Sulfate Heptahydrate 500gm Merck Germany

Iron (II) sulfate heptahydrate for analysis EMSURE ACS, ISO, Reag. Ph Eur. CAS 7782-63-0, EC Number 233-336-3, chemical formula FeSO * 7HO.
Catalog Number 103965
Packing: 500 gr
Replaces FX0260-1
Synonyms Iron vitriol
Description Iron (II) sulfate heptahydrate
CAS number 7782-63-0
EC index number 026-003-01-4
EC number 233-336-3
Grade ACS, ISO, Reag. Ph Eur
Hill Formula FeOS * 7HO
Chemical formula FeSO * 7HO
Molar Mass 278.02 g / mol
HS Code 2833 29 80
Specifications
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 (PO) 0.001%
Total nitrogen (N) 0.001%
Heavy metals as Pb 0.005%
As (Arsenic) 0.0002%
Ca (Calcium) 0.005%
Cr (Chromium) 0.005%
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) 0.005%
Pb (Lead) 0.0005%
Zn (Zinc) 0.005%
Substance not precipitated by ammonium hydroxide 0.1%