Nickel fluoride

Nickel fluoride Basic information
Product Name:Nickel fluoride
Synonyms:Nickelous fluoride;NiF2;NICKEL FLUORIDE;NICKEL FLUORIDE (OUS);NICKEL(II) FLUORIDE;Nickel difluoride;Nickel(II) fluoride, anhydrous;Nickel Flouride
CAS:10028-18-9
MF:F2Ni
MW:96.69
EINECS:233-071-3
Product Categories:metal halide;Catalysis and Inorganic Chemistry;Chemical Synthesis;Materials Science;Metal and Ceramic Science;Nickel;Catalysis and Inorganic Chemistry;Chemical Synthesis;Nickel Salts;NickelMetal and Ceramic Science;Salts;Nickel Salts
Mol File:10028-18-9.mol
Nickel fluoride Structure
Nickel fluoride Chemical Properties
Melting point 1380℃(lit.)
Boiling point 1498.77°C (estimate)
density 4.72 g/mL at 25 °C(lit.)
vapor pressure 0.001Pa at 20℃
solubility diethyl ether: insoluble(lit.)
pka0.019[at 20 ℃]
form Crystalline
Specific Gravity4.72
color Pale yellow
Water Solubility 2.51 g/100 mL
Sensitive Hygroscopic
Merck 14,6508
Exposure limitsACGIH: TWA 2.5 mg/m3; TWA 0.1 mg/m3
NIOSH: IDLH 10 mg/m3; IDLH 250 mg/m3; TWA 2.5 mg/m3; TWA 0.015 mg/m3
Stability:hygroscopic
CAS DataBase Reference10028-18-9(CAS DataBase Reference)
NIST Chemistry ReferenceNickel difluoride(10028-18-9)
EPA Substance Registry SystemNickel fluoride (NiF2) (10028-18-9)
Safety Information
Hazard Codes T,Xi,Xn,N
Risk Statements 45-36/37/38-42/43-40-68-50/53-48/23-41-38-25-61-49
Safety Statements 53-26-36/37/39-45-36/37-61-60-22
RIDADR 3288
WGK Germany 3
RTECS QR6825000
Hazard Note Irritant
TSCA Yes
HazardClass 6.1
PackingGroup III
HS Code 2826199090
Hazardous Substances Data10028-18-9(Hazardous Substances Data)
ToxicityLD50 i.v. in mice: 130 mg/kg (Nat. Acad. Sci.)
MSDS Information
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Nickel fluoride English
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ACROS English
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Nickel fluoride Usage And Synthesis
Chemical PropertiesGreen crystalline powder
Chemical PropertiesNickel(II) fluoride has the tetragonal rutile structure with only slightly tetragonally compressed NiF6 octahedra; the Ni-F distances being 2.01 and 1.98 ?. Above the melting point it sublimes as a linear gaseous molecule. The anhydrous fluoride is rather unreactive towards concentrated acids; it is only slightly soluble in anhydrous hydrogen fluoride and is not attacked by electronegative elements such as chlorine, sulphur and phosphorus. The pale green tetrahydrate is slightly soluble in water; when heated, several intermediate hydrates are formed prior to N1F2.
UsesNickel fluoride?comprises the passivating surface that forms on nickel alloys, e.g. monel, which is why such materials are good to store or transport hydrogen fluoride or elemental fluorine.
PreparationNickel fluoride tetrahydrate [13940-83-5], NiF2.4H2O, and its anhydrous counterpart, nickel fluoride [10028-18-9], NiF2 , are the only known stable binary compounds of nickel and fluorine. The former is a greenish light yellow crystal or powder prepared by the addition of nickel carbonate to 30-50% aqueous HF solution. The nickel fluoride formed first goes into solution and then precipitates out as the tetrahydrate as the concentration of Nickel fluoride increases and that of HF decreases. When the addition of nickel is complete, the solution and the precipitates are dried at 75-100°C until all the water is expelled. The tetrahydrate has high solubility in aqueous HF, eg, 13.3 wt % in 30% HF. It is slightly soluble in water and insoluble in alcohol and ether.
Anhydrous Nickel fluoride, a light yellow colored powder, is prepared by the action of anhydrous HF on anhydrous NiCl2 , or nickel fluoride tetrahydrate at 300°C. It is also prepared by heating a mixture of NH4.HF2 and NiF2.4H2O. The other methods include the fluorination of metal salts using excess SF4 or using ClF3 at elevated temperatures, or the reaction of NiCO3 and anhydrous HF at 250°C.
Flammability and ExplosibilityNonflammable
Safety ProfileNTP 10th Report on Carcinogens. Reacts violently with potassium. Chronic exposure may cause mottling of teeth, changes in bones. Mutation data reported. When heated to decomposition it emits toxic fumes of F-. See also FLUORIDES and NICKEL COMPOUNDS.
Nickel fluoride Preparation Products And Raw materials
Raw materialsHydrochloric acid-->Nitric acid-->Sodium carbonate-->Nickel-->Hydrogen fluoride-->Nickel sulfate-->Nickel carbonate
Ammonium hydrogen difluoride POTASSIUM HEPTAFLUORONICKELATE Boron trifluoride POTASSIUM NICKEL FLUORIDE sodium fluoride Nickel NICKEL(II) FLUORIDE TETRAHYDRATE nickel POTASSIUM HEXAFLUORONICKELATE (IV) POTASSIUM FLUORIDE Boron trifluoride diethyl etherate Nickel fluoride Aluminum fluoride Sulfur hexafluoride hydrogen fluoride FLUORIDE STANDARD Hydrogen fluoride GERMAN SILVER Sodium fluoride

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