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HomeProduct name listNickel fluoride

Nickel fluoride

Synonym(s):Nickel difluoride;Nickel fluoride;Nickelous fluoride

  • CAS NO.:10028-18-9
  • Empirical Formula: F2Ni
  • Molecular Weight: 96.69
  • MDL number: MFCD00016263
  • EINECS: 233-071-3
  • SAFETY DATA SHEET (SDS)
  • Update Date: 2024-10-30 18:52:02
Nickel fluoride Structural

What is Nickel fluoride?

Chemical properties

Green crystalline powder

Chemical properties

Nickel(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.

The Uses of Nickel fluoride

Nickel 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.

Preparation

Nickel 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 Explosibility

Non flammable

Safety Profile

NTP 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.

Properties of Nickel fluoride

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.)
pka 0.019[at 20 ℃]
form  Crystalline
Specific Gravity 4.72
color  Pale yellow
Water Solubility  2.51 g/100 mL
Sensitive  Hygroscopic
Merck  14,6508
Exposure limits ACGIH: 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 Reference 10028-18-9(CAS DataBase Reference)
NIST Chemistry Reference Nickel difluoride(10028-18-9)
EPA Substance Registry System Nickel fluoride (NiF2) (10028-18-9)

Safety information for Nickel fluoride

Signal word Danger
Pictogram(s)
ghs
Corrosion
Corrosives
GHS05
ghs
Skull and Crossbones
Acute Toxicity
GHS06
ghs
Health Hazard
GHS08
ghs
Environment
GHS09
GHS Hazard Statements H315:Skin corrosion/irritation
H317:Sensitisation, Skin
H318:Serious eye damage/eye irritation
H334:Sensitisation, respiratory
H341:Germ cell mutagenicity
H350:Carcinogenicity
H372:Specific target organ toxicity, repeated exposure
H410:Hazardous to the aquatic environment, long-term hazard
Precautionary Statement Codes P273:Avoid release to the environment.
P280:Wear protective gloves/protective clothing/eye protection/face protection.
P301+P310:IF SWALLOWED: Immediately call a POISON CENTER or doctor/physician.
P302+P352:IF ON SKIN: wash with plenty of soap and water.
P305+P351+P338:IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing.

Computed Descriptors for Nickel fluoride

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