Ferrous tungstate

Ferrous tungstate

Names
IUPAC names Iron(2+) dioxido(dioxo)tungsten [ACD/IUPAC Name] Tungsten, diolatodioxo-, iron(2+) salt (1:1) [ACD/Index Name]
Other names Iron(II) tungstate
Identifiers
CAS Number	20405-35-0
3D model (JSmol)	Interactive image
ChemSpider	11214118
ECHA InfoCard	100.034.188
PubChem CID	22178528
CompTox Dashboard (EPA)	DTXSID00623278
InChI InChI=1S/Fe.4O.W/q+2;;;2*-1; Key: SSWAPIFTNSBXIS-UHFFFAOYSA-N
SMILES [O-][W](=O)(=O)[O-].[Fe+2]
Properties
Chemical formula	FeWO4, sometimes expressed FeO4W
Molar mass	303.68 g/mol
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Infobox references

Ferrous tungstate (FeWO₄) is an inorganic compound. It can be synthesized from iron(III) chloride and sodium tungstate under hydrothermal conditions with the presence of L-cysteine reduces Fe³⁺ to Fe²⁺.^[1] Ferberite is composed of this compound.^[2]

The hydrothermal process^{[definition needed]} is a method for synthesizing ${\displaystyle {\ce {FeWO4}}}$ crystals. Reagents used in this process are: - Ethylenediamine tetraacetic acid disodium salt ${\displaystyle {\ce {(Na2EDTA)}}}$and Hexamethylenetetramine ${\displaystyle {\ce {(HMT)}}}$. ${\displaystyle {\ce {Na2EDTA}}}$ helps in controlling the morphology of ${\displaystyle {\ce {FeWO4}}}$ crystals by binding to metal ions and preventing their premature precipitation and ${\displaystyle {\ce {HMT}}}$ acts as a pH buffer and a source of ammonia.^[3]

• Ferberite

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