Silberfluorid

Bezeichnung:Silberfluorid

CAS-Nr7775-41-9

Englisch Name:Silver fluoride

CBNumberCB1766727

SummenformelAgF

Molgewicht126.87

MOL-Datei7775-41-9.mol

Synonyma

Silberfluorid

Silberfluorid physikalisch-chemischer Eigenschaften

Schmelzpunkt

≥300 °C(lit.)

Siedepunkt

1150 °C

Dichte

5.852 g/mL at 25 °C(lit.)

Flammpunkt

1150°C

storage temp.

Keep in dark place,Inert atmosphere,Room temperature

Löslichkeit

Methanol (Slightly), Water (Slightly)

Aggregatzustand

solid

Farbe

orange to brown

Wichte

5.852

Wasserlöslichkeit

182 g/100 mL (15.5 ºC)

Sensitive

Moisture Sensitive & Hygroscopic

Crystal Structure

NaCl type

crystal system

Cube

Merck

14,8514

Space group

Fm3m

Lattice constant

a/nm	b/nm	c/nm	α/o	β/o	γ/o	V/nm3
0.493	0.493	0.493	90	90	90	0.1198

Expositionsgrenzwerte

ACGIH: TWA 0.01 mg/m3; TWA 2.5 mg/m3
NIOSH: IDLH 10 mg/m3; IDLH 250 mg/m3; TWA 0.01 mg/m3

Stabilität

Stable. Incompatible with strong oxidizing agents, strong acids, reducing agents. Light sensitive. Hygroscopic.

Sicherheit

Kennzeichnung gefährlicher	C
R-Sätze:	34-23/24/25-35
S-Sätze:	26-36/37/39-45-25-28
RIDADR	UN 3260 8/PG 2
WGK Germany	3
RTECS-Nr.	VW4250000
F	3-8-10-21
Hazard Note	Corrosive
TSCA	T
HazardClass	HYGROSCOPIC, CORROSIVE
HazardClass	8
HS Code	28432900

Gefahreninformationscode (GHS)

Silver fluoride Chemische Eigenschaften,Einsatz,Produktion Methoden

R-Sätze Betriebsanweisung:
R34:Verursacht Verätzungen.
R23/24/25:Giftig beim Einatmen, Verschlucken und Berührung mit der Haut.
S-Sätze Betriebsanweisung:
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).
S25:Berührung mit den Augen vermeiden.
S28:Bei Berührung mit der Haut sofort abwaschen mit viel . . . (vom Hersteller anzugeben).
Chemische Eigenschaften
orange to brown solid
Verwenden
Silver(I) fluoride is used as a fluorination and desilylation reagent in organic synthesis. In medical filed, it is used as topical caries in aqueous form in dentistry. It is employed in organofluorine chemistry for addition of fluoride across multiple bonds, especially to prepare perfluoroalkylsilver(I) by reacting with alkenes. Further, it is involved in the preparation of tetralkylammonium fluorides by the reaction with tetralkylammonium bromide. In addition to this, it is used as a desulfuration-fluorination reagent on thiourea derived substrates.
Verwenden
1. Silver fluoride is applied to convert organic Br and Cl Compounds to their fluoro analogs; as antiseptic.
2. Preparation of bromoacetylenes from bulky, trialkylsilylacetylenes.
3. Also used in a palladium-catalyzed cross coupling of acetanilides with trialkoxysilanes.
4. Silver(I) fluoride is used as a fluorination and desilylation reagent in organic synthesis. In medical filed, it is used as topical caries in aqueous form in dentistry. It is employed in organofluorine chemistry for addition of fluoride across multiple bonds, especially to prepare perfluoroalkylsilver(I) by reacting with alkenes.
5. Further, it is involved in the preparation of tetralkylammonium fluorides by the reaction with tetralkylammonium bromide. In addition to this, it is used as a desulfuration-fluorination reagent on thiourea derived substrates.
Verwenden

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Industry

Application

Role/benefit

Organic synthesis

Fluorination of alkyl halides

Fluorination agent/source of fluoride, both soluble in water and organic solvents

Desulfuration-fluorination of thiourea derived substrates

Inorganic synthesis

Preparation of tetralkylammonium fluorides

Reactant/reacts with tetralkylammonium bromide

Preparation of chandelier-like [Ag10]2+ cluster

Reactant/reacts with silver acetylide

Dental caries

Prevention of dental caries

Anti-caries agent/little used for the instability of concentrated AgF solutions

Preparation of anti-caries agent (Ag(NH₃)₂F) with good stability

Raw material/source of the effective component

Others

Coating silicon surface with uniform silver microlayer

Reactant/source of Ag
Definition
ChEBI: Silver monofluoride is a silver salt and a fluoride salt.
synthetische
Silver(I) fluoride was prepared by reacting hydrogen fluoride with the carbonate and with the oxide.
Allgemeine Beschreibung
Odorless yellow to gray solid. Sinks and mixes with water.
Air & Water Reaktionen
Water soluble.
Reaktivität anzeigen
Boron reacts explosively when ground with Silver fluoride; silicon reacts violently [Bretherick 1979 p, 197]. Dimethyl sulfoxide is violently reactive with fluorinating agents such as Silver fluoride [Chem. Eng. News 44(24):7 1956]. When Silver fluoride is ground with calcium hydride the mass becomes incandescent [Mellor 3:389 1946-1947]. CaH2 reacts incandescently with AgF if subject to friction. (Mellor, 1941, Vol. 3, 389, 651).
Hazard
Strong irritant.
Health Hazard
Inhalation of dust causes irritation of nose and throat. Ingestion may cause vomiting, salty taste, abdominal pain, diarrhea, convulsions, collapse, thirst, disturbed color vision, and acute toxic nephritis. Contact with eyes causes irritation. Skin may be blackened on prolonged exposure.
läuterung methode
The fluoride is a hygroscopic solid with a solubility of 135g/100mL of H2O at 15o, and forms an insoluble basic fluoride in moist air. Purify it by washing with AcOH and dry *C6H6, then keep it in a vacuum desiccator at room temperature to remove *C6H6, and store it in opaque glass bottles. The flaky hygroscopic crystals darken on exposure to light. It attacks bone and teeth. [Sharpe J Chem Soc 4538 1952, Kwasnik in Handbook of Preparative Inorganic Chemistry (Ed. Brauer) Academic Press Vol I p 240 1963.]

Silver fluoride Upstream-Materialien And Downstream Produkte

Silberfluorid Anbieter Lieferant Produzent Hersteller Vertrieb Händler.

7775-41-9, Silver fluoride Verwandte Suche:

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