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Ditantalpentaoxid

Tantalum pentoxide Struktur
1314-61-0
CAS-Nr.
1314-61-0
Bezeichnung:
Ditantalpentaoxid
Englisch Name:
Tantalum pentoxide
Synonyma:
TANTALUM OXIDE;TANTALUM(V) OXIDE;Ta2-O5;tantalic oxide;Tantalum(Ⅴ)oxide;TANTALUM(+5)OXIDE;tatalum pentoxide;Ditantalpentaoxid;TANTALUM PENTOXIDE;tantalumpentaoxide
CBNumber:
CB1282629
Summenformel:
O5Ta2
Molgewicht:
441.89
MOL-Datei:
1314-61-0.mol

Ditantalpentaoxid Eigenschaften

Schmelzpunkt:
1872 °C
Dichte
8.2 g/mL at 25 °C(lit.)
storage temp. 
Sealed in dry,Room Temperature
L?slichkeit
insoluble in H2O, ethanol, acid solutions; sHF
Aggregatzustand
lumps
Farbe
White to white-beige
Wichte
8.2
Widerstand (resistivity)
1.0 ∞ 10*12 (ρ/μΩ.cm)
Wasserl?slichkeit
Insoluble in water.
Crystal Structure
Trigonal
crystal system
Nogata
Merck 
14,9056
Space group
Pmm2
Lattice constant
a/nmb/nmc/nmα/oβ/oγ/oV/nm3
0.38884.0290.61989090900.9709
Dielectric constant
11.6(Ambient)
Expositionsgrenzwerte
OSHA: TWA 5 mg/m3
NIOSH: IDLH 2500 mg/m3; TWA 5 mg/m3; STEL 10 mg/m3
InChI
InChI=1S/5O.2Ta
InChIKey
PBCFLUZVCVVTBY-UHFFFAOYSA-N
SMILES
[Ta](=O)(=O)O[Ta](=O)=O
CAS Datenbank
1314-61-0(CAS DataBase Reference)
EPA chemische Informationen
Tantalum oxide (Ta2O5) (1314-61-0)
Sicherheit
  • Risiko- und Sicherheitserkl?rung
  • Gefahreninformationscode (GHS)
Kennzeichnung gef?hrlicher Xi
R-S?tze: 36/37/38
S-S?tze: 37/39-26
WGK Germany  -
RTECS-Nr. WW5855000
TSCA  Yes
HS Code  28259085
Toxizit?t LD50 orally in rats: 8000 mg/kg (Cochran)
Bildanzeige (GHS) GHS hazard pictograms
Alarmwort Warnung
Gefahrenhinweise
Code Gefahrenhinweise Gefahrenklasse Abteilung Alarmwort Symbol P-Code
H320 Causes eye irritation Serious eye damage/eye irritation Category 2B Warnung P264, P305+P351+P338,P337+P313
Sicherheit
P264 Nach Gebrauch gründlich waschen.
P264 Nach Gebrauch gründlich waschen.
P305+P351+P338 BEI KONTAKT MIT DEN AUGEN: Einige Minuten lang behutsam mit Wasser spülen. Eventuell vorhandene Kontaktlinsen nach M?glichkeit entfernen. Weiter spülen.
P337+P313 Bei anhaltender Augenreizung: ?rztlichen Rat einholen/?rztliche Hilfe hinzuziehen.

Ditantalpentaoxid Chemische Eigenschaften,Einsatz,Produktion Methoden

R-S?tze Betriebsanweisung:

R36/37/38:Reizt die Augen, die Atmungsorgane und die Haut.

S-S?tze Betriebsanweisung:

S37/39:Bei der Arbeit geeignete Schutzhandschuhe und Schutzbrille/Gesichtsschutz tragen.
S26:Bei Berührung mit den Augen sofort gründlich mit Wasser abspülen und Arzt konsultieren.

Chemische Eigenschaften

Tantalum pentoxide, Ta2O5, is a white powder existing in two thermodynamically stable modifications. The orthorombic b-phase changes at 1,360 °C (2,480 °F) into the tetragonal a-modification. The existence of an e-modification has also been reported. Tantalum pentoxide reacts slowly with hot hydrofluoric acid but is insoluble in water and in most solutions of acids and alkalies. For analytical purposes, it can be dissolved by fusion with alkali hydroxides, alkali carbonates, and potassium pyrosulfate.

Physikalische Eigenschaften

White orthorhombic crystal or powder; density 8.20 g/cm3; melts at 1,785°C; insoluble in water, ethanol and practically all acids; soluble in hydrofluoric acid; solubilized by fusion with caustic potash or potassium hydrogen sulfate.

Physikalische Eigenschaften

Dielectric used in film supercapacitors. Tantalum oxide is a high-refractiveindex, low-absorption material used in making optical coatings in the near-UV (350 nm) to IR (8 μm). Insoluble in most chemicals except HF, HF-HNO3 mixtures, oleum, fused alkali hydroxides (e.g., NaOH, KOH), and molten pyrosulfates.

Verwenden

Tantalum pentoxide is used in making high refractive index optical glass; as a dielectric film on tantalum for its use as a capacitor component and rectifier; and for preparing tantalum metal, its carbide, and many other tantalum compounds.

synthetische

Tantalum pentoxide is obtained as an intermediate in extracting tantalum from the columbite-tantalite series of minerals. Also, the oxide can be made by heating Ta metal in oxygen or air at elevated temperatures.

Allgemeine Beschreibung

Tantalum pentoxide is dielectric in nature making it useful for making capacitors in the electronics industry.

Hazard

TLV: 5 mg/m3.

Sicherheitsprofil

Mildly toxic by ingestion. Incompatible with ClF3, BrF3, Li. See also TANTALUM.

Ditantalpentaoxid Upstream-Materialien And Downstream Produkte

Upstream-Materialien

Downstream Produkte


Ditantalpentaoxid Anbieter Lieferant Produzent Hersteller Vertrieb H?ndler.

Global( 266)Lieferanten
Firmenname Telefon E-Mail Land Produktkatalog Edge Rate
Beijing Rehoboth New Materials Co., Ltd
+undefined18833660223
18833660223@163.com China 1 58
Shaanxi Dideu Medichem Co. Ltd
+86-29-81148696 +86-15536356810
1022@dideu.com China 3882 58
Henan Tianfu Chemical Co.,Ltd.
+86-0371-55170693 +86-19937530512
info@tianfuchem.com China 21634 55
career henan chemical co
+86-0371-86658258 +8613203830695
sales@coreychem.com China 29880 58
Hubei Jusheng Technology Co.,Ltd.
18871490254
linda@hubeijusheng.com CHINA 28172 58
Shandong chuangyingchemical Co., Ltd.
18853181302
sale@chuangyingchem.com CHINA 5906 58
Chongqing Chemdad Co., Ltd
+86-023-6139-8061 +86-86-13650506873
sales@chemdad.com China 39894 58
Hefei TNJ Chemical Industry Co.,Ltd.
+86-0551-65418671 +8618949823763
sales@tnjchem.com China 34563 58
ANHUI WITOP BIOTECH CO., LTD
+8615255079626
eric@witopchemical.com China 23541 58
Xi'an MC Biotech, Co., Ltd.
029-89275612 +8618991951683
mcbio_sales@163.com China 2251 58

1314-61-0(Ditantalpentaoxid)Verwandte Suche:


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