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IRON (II) FLUORIDE

Preparation

IRON (II) FLUORIDE

CAS No.7789-28-8
Chemical Name:IRON (II) FLUORIDE
CBNumber:CB8250423
Molecular Formula:F2Fe
Formula Weight:93.84
MOL File:7789-28-8.mol

IRON (II) FLUORIDE Property

Melting point >1000°C
Density 4,09 g/cm³
solubility slightly soluble in H2O; soluble in dilute HF; insoluble in EtOH, ethyl ether
form Powder
color White
Specific Gravity 4.09
Water Solubility Insoluble in water.
Sensitive Air Sensitive & Hygroscopic
Crystal Structure Rutile type
crystal system square
Merck 14,4045
Space group P42/mnm
Lattice constant
a/nm b/nm c/nm α/o β/o γ/o V/nm3
0.47 0.47 0.331 90 90 90 0.0731
Stability hygroscopic
CAS DataBase Reference 7789-28-8(CAS DataBase Reference)
FDA UNII NP4W87HLVO
EPA Substance Registry System Iron fluoride (FeF2) (7789-28-8)
UNSPSC Code 12352302
NACRES NA.23

a/nm	b/nm	c/nm	α/o	β/o	γ/o	V/nm3
0.47	0.47	0.331	90	90	90	0.0731

Safety

Hazard Codes :C
Risk Statements :34
Safety Statements :26-36/37/39-45
RIDADR :UN 3260 8/PG 2
WGK Germany :3
F :3
Hazard Note :Corrosive
TSCA :Yes
HazardClass :6.1
PackingGroup :III
HS Code :2826199090

Hazard and Precautionary Statements (GHS)

Symbol(GHS)
Signal wordDanger
Hazard statements H314
Precautionary statements P260-P280-P303+P361+P353-P304+P340+P310-P305+P351+P338

IRON (II) FLUORIDE Price More Price(5)

Brand: Sigma-Aldrich
Product number: 399841
Product name : Iron(II) fluoride
Purity: 98%
Packaging: 10G
Price: ₹5423.33
Updated: 2022/06/14
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Brand: Sigma-Aldrich(India)
Product number: 399841
Product name : Iron(II) fluoride
Purity: 98%
Packaging: 10G
Price: ₹5423.33
Updated: 2022/06/14
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Brand: ALFA India
Product number: ALF-011486-18
Product name : Iron(II) fluoride, anhydrous, 98%
Purity:
Packaging: 50g
Price: ₹21240
Updated: 2022/05/26
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Brand: ALFA India
Product number: ALF-011486-09
Product name : Iron(II) fluoride, anhydrous, 98%
Purity:
Packaging: 10g
Price: ₹7140
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Brand: ottokemi
Product number: F 0162
Product name : Ferrous fluoride
Purity: 98%
Packaging: 10gm
Price: ₹6219
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IRON (II) FLUORIDE Chemical Properties,Usage,Production

Preparation Anhydrous iron(II) fluoride may be prepared by passing hydrogen fluoride gas over iron at a high temperature:
2HF + Fe → FeF2 + H2
Alternative methods of preparation of anhydrous salt involve the reduction of iron(III) fluoride with hydrogen; or by passing fluorine gas over anhydrous iron(II) chloride in the cold:
2FeF3 + H2 → 2FeF2 + 2HF
FeCl2 + F2 → FeF2 + Cl2
The tetrahydrate may be prepared by dissolving iron metal in aqueous hydrofluoric acid.
Chemical Properties brown fine crystalline powder
Chemical Properties Iron(II) fluoride is prepared by passing hydrogen fluoride over iron at red heat or over iron(II) chloride at a somewhat lower temperature. It is sparingly soluble in water with some hydrolysis, and is insoluble in alcohol, ether and benzene. The boiling point is about 1100°C and the melting point only a little below this temperature.
Physical properties White tetragonal crystal; density 4.09g/cm³; melts at 1100°C; slightly soluble in water; insoluble in ethanol and ether; dissolves in dilute hydrofluoric acid. Tetrahydrate crystals are hexagonal shape; density 2.20g/cm³; decomposes at 100°C.
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Uses Iron(II) fluoride is used for proteomics research applications. It is also a chemical intermediate.
Uses Iron(II) fluoride is used as a catalyst in organic fluorination reactions. Other applications are in ceramics; and in the preparation of fluoride salts of other metals.
Structure and conformation Iron(II) fluoride crystallizes in the rutile structure, the iron atom being surrounded tetragonally91 by 4F- at 2·12 ? and 2F- at 1·99 ?. Iron(II) fluoride is reduced to iron by hydrogen at red heat, but is stable to hydrogen at 400°—and can be prepared by reduction of iron(III) fluoride with hydrogen at this temperature. It reacts violently when heated with metals such as sodium and aluminium, but undergoes no visible reaction with bromine, iodine or sulphur. The ammoniates FeF2.5NH3,H20, FeF2.NH3.H20 and FeF2.0·5NH3.H2O are obtained in the reactions of gaseous ammonia with the tetrahydrate at various temperatures.