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Nickel fluoride Struktur

Nickeldifluorid

Bezeichnung:Nickeldifluorid

CAS-Nr10028-18-9

Englisch Name:Nickel fluoride

CBNumberCB6714561

SummenformelF2Ni

Molgewicht96.69

MOL-Datei10028-18-9.mol

Synonyma

Nickeldifluorid

Nickeldifluorid physikalisch-chemischer Eigenschaften

Schmelzpunkt

1380℃(lit.)

Siedepunkt

1498.77°C (estimate)

Dichte

4.72 g/mL at 25 °C(lit.)

Dampfdruck

0.001Pa at 20℃

Löslichkeit

diethyl ether: insoluble(lit.)

Aggregatzustand

Crystalline

pka

0.019[at 20 ℃]

Wichte

4.72

Farbe

Pale yellow

Wasserlöslichkeit

2.51 g/100 mL

Sensitive

Hygroscopic

Crystal Structure

Rutile type

crystal system

square

Merck

14,6508

Space group

P42/mnm

Lattice constant

a/nm	b/nm	c/nm	α/o	β/o	γ/o	V/nm3
0.465	0.465	0.3084	90	90	90	0.0667

Expositionsgrenzwerte

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

Stabilität

hygroscopic

Sicherheit

Kennzeichnung gefährlicher	T,Xi,Xn,N
R-Sätze:	45-36/37/38-42/43-40-68-50/53-48/23-41-38-25-61-49
S-Sätze:	53-26-36/37/39-45-36/37-61-60-22
RIDADR	3288
WGK Germany	3
RTECS-Nr.	QR6825000
Hazard Note	Irritant
TSCA	Yes
HazardClass	6.1
PackingGroup	III
HS Code	2826199090
Giftige Stoffe Daten	10028-18-9(Hazardous Substances Data)
Toxizität	LD50 i.v. in mice: 130 mg/kg (Nat. Acad. Sci.)

Gefahreninformationscode (GHS)

Nickel fluoride Chemische Eigenschaften,Einsatz,Produktion Methoden

R-Sätze Betriebsanweisung:
R45:Kann Krebs erzeugen.
R36/37/38:Reizt die Augen, die Atmungsorgane und die Haut.
R42/43:Sensibilisierung durch Einatmen und Hautkontakt möglich.
R40:Verdacht auf krebserzeugende Wirkung.
S-Sätze Betriebsanweisung:
S53:Exposition vermeiden - vor Gebrauch besondere Anweisungen einholen.
S26:Bei Berührung mit den Augen sofort gründlich mit Wasser abspülen und Arzt konsultieren.
S36/37/39:Bei der Arbeit geeignete Schutzkleidung,Schutzhandschuhe und Schutzbrille/Gesichtsschutz tragen.
S45:Bei Unfall oder Unwohlsein sofort Arzt zuziehen (wenn möglich, dieses Etikett vorzeigen).
S36/37:Bei der Arbeit geeignete Schutzhandschuhe und Schutzkleidung tragen.
Chemische Eigenschaften
Green crystalline powder
Chemische Eigenschaften
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.
Verwenden
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.
synthetische
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
Sicherheitsprofil
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.

Nickel fluoride Upstream-Materialien And Downstream Produkte

Nickeldifluorid Anbieter Lieferant Produzent Hersteller Vertrieb Händler.

10028-18-9, Nickel fluoride Verwandte Suche:

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