ChemicalBook CAS DataBase List 7789-28-8

7789-28-8

Name	IRON (II) FLUORIDE
CAS	7789-28-8
EINECS(EC#)	232-155-7
Molecular Formula	F2Fe
MDL Number	MFCD00016093
Molecular Weight	93.84
MOL File	7789-28-8.mol

Chemical Properties

Appearance	brown fine crystalline powder
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
Merck	14,4045
Stability:	hygroscopic
CAS DataBase Reference	7789-28-8(CAS DataBase Reference)
EPA Substance Registry System	Iron fluoride (FeF2) (7789-28-8)

Safety Data

Hazard Codes	C
Risk Statements	R34:Causes burns. less more
Safety Statements	S26:In case of contact with eyes, rinse immediately with plenty of water and seek medical advice . S36/37/39:Wear suitable protective clothing, gloves and eye/face protection . S45:In case of accident or if you feel unwell, seek medical advice immediately (show label where possible) . less more
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 Information

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.
.

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.

Uses

Iron(II) fluoride is used for proteomics research applications. It is also a chemical intermediate.

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.

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7789-28-8

Chemical Properties

Safety Data

Hazard Information

Chemical Properties

Chemical Properties

Physical properties

Uses

Uses

Structure and conformation

Questions And Answer

Preparation

Spectrum Detail

Well-known Reagent Company Product Information

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