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Tribariumdinitrid

BARIUM NITRIDE Struktur
12047-79-9
CAS-Nr.
12047-79-9
Bezeichnung:
Tribariumdinitrid
Englisch Name:
BARIUM NITRIDE
Synonyma:
gettera;BARIUM NITRIDE;tribarium dinitride;bariumnitride(ba3n2);BariuM nitride (99.7%-Ba);azanidylidenebarium,barium(2+);BariuM nitride powder, -20 Mesh, 99.7% trace Metals basis, Sr: <0.8%
CBNumber:
CB8170031
Summenformel:
Ba3N2
Molgewicht:
439.99
MOL-Datei:
12047-79-9.mol

Tribariumdinitrid Eigenschaften

Siedepunkt:
1000, vacuum [ALF93]
Dichte
4.780
L?slichkeit
reacts with H2O
Aggregatzustand
Powder
Farbe
black
Wasserl?slichkeit
decomposed in H2O [CRC10]
EPA chemische Informationen
Barium nitride (Ba3N2) (12047-79-9)

Sicherheit

Kennzeichnung gef?hrlicher Xn
R-S?tze: 20/22
S-S?tze: 28
RIDADR  UN 2813 4.3 / PGI
WGK Germany  3
Toxizit?t LD50 orl-mus: 46,100 mg/kg TOIZAG 22,119,75

Tribariumdinitrid Chemische Eigenschaften,Einsatz,Produktion Methoden

Beschreibung

Barium nitride purportedly has the molecular formula of Ba3N2 and the molecular weight of 439.9944 g/mol. Its CAS number is 12047-79-9. It is offered for sale by several reputable manufacturers but the actual composition and identity may not coincide with the formula presented. Although Mg, Ca (and to some extent Sr) forms a number of compounds based upon the general formula M3N2, there is no report in the literature that or Ba forms such compositions. The literature is devoid of any data relating to Ba3N2 and the subnitride is mentioned only in the presence of Sr2N.
Barium nitride has been reported to be metastable and sublimes in the 915 to 1050 C temperature range. The reported equation for this behavior is: log P = 6.38 × 104/T(K) and it decomposes when heated beyond this range to form the metal and nitrogen gas, i.e. it is metastable. Thus, the existence of barium nitride is doubtful and no report of its formation or properties exists to date.

Chemische Eigenschaften

yellowish brown; -20 mesh, 99.7% purity [CER91] [CIC73]

Physikalische Eigenschaften

Barium–nitride–hydride is one of the fewdocumented H--ionic conductors. It crystallizes in the a-NaFeO2 structure (space group Rm) with distorted Ba-octahedra centered alternately by H- and N3-. Neutron diffraction shows that the hydrogen ions are distributed independent of temperature over lattice sites: 85% on (3a) and 15% on (6c). At T > 525 K a sharp increase of the ionic conductivity can be observed. The diffusion process takes place by uncorrelated jumps of hydrogen ions between regular lattice sites. Using quasielastic neutron scattering techniques and a planar jump diffusion model, we were able to determine the mean residence time on a H--site to be s = 20 ± 2d ps and the diffusion constant D to be 2.1×10-5 cm2/s at T = 823 K.
Ba2Nhas been used to produce other subnitrides. Bulk thermal or filament-initiated reactions of mixed powders of transition metal chlorides and Ba3N2 produces transition metal nitrides (TiN, ZrN, HfN, VN, V2N) in good yield. The products were characterized by X-ray powder diffraction, SEM/EDAX, FT-IR, microelemental analysis and imaging XPS. The effect of diluting the reaction by the addition of LiCl was used to lower reaction temperatures and in the case of WCI4 and Li3N produced WN. Reaction propagation was investigated by using various mixtures of nitriding reagent (Li3N, Mg3N2, Ca3N2), this was correlated with Tad(s), the maximum adiabatic combustion temperature for salt formation only.

Verwenden

Barium nitride is a ceramic that finds use as a dopant in optical materials such as white emitting LEDs. Ba3N2 is also used as a synthetic precursor for ternary metal nitrides and as a flux growth medium for GaN.

Sicherheitsprofil

A poison by ingestion. Flammableby spontaneous chemical reaction with water to liberateexplosive ammonia gas. Dangerous; explodes uponheating and by spontaneous chemical reaction, liberatingNH3 vapor which can form explosive mixtures with air.Violent

Synthese

3 Ba + N2 = Ba3N2
The nitriding temperatures for Ba is and 560°C. To achieve complete conversion to the nitride, the heating must be continued for a long time or the temperature must be raised to 700-750°C on cessation of absorption of N2 .

Tribariumdinitrid Upstream-Materialien And Downstream Produkte

Upstream-Materialien

Downstream Produkte


Tribariumdinitrid Anbieter Lieferant Produzent Hersteller Vertrieb H?ndler.

Global( 35)Lieferanten
Firmenname Telefon E-Mail Land Produktkatalog Edge Rate
ShanDong Look Chemical Co.,Ltd.
+8617653113219
sales01@sdlookchemical.com China 2737 58
Shaanxi Didu New Materials Co. Ltd
+86-89586680 +86-13289823923
1026@dideu.com China 8670 58
Shanghai Acmec Biochemical Technology Co., Ltd.
+86-18621343501; +undefined18621343501
product@acmec-e.com China 33338 58
Aladdin Scientific
+1-+1(833)-552-7181
sales@aladdinsci.com United States 57505 58
SHANGHAI KEAN TECHNOLOGY CO., LTD.
+8613817748580
cooperation@kean-chem.com China 40066 58
J & K SCIENTIFIC LTD. 010-82848833 400-666-7788
jkinfo@jkchemical.com China 96815 76
Shanghai Aladdin Bio-Chem Technology Co.,LTD 400-400-6206333 18521732826
market@aladdin-e.com China 25003 65
Sigma-Aldrich 021-61415566 800-8193336
orderCN@merckgroup.com China 51456 80
Guangdong wengjiang Chemical Reagent Co., Ltd. 0751-2815688 13927872512
3007421951@qq.com China 10057 58
Shenzhen Polymeri Biochemical Technology Co., Ltd. +86-400-002-6226 +86-13028896684;
sales@rrkchem.com China 57423 58

12047-79-9(Tribariumdinitrid)Verwandte Suche:


  • bariumnitride(ba3n2)
  • gettera
  • BARIUM NITRIDE
  • BariuM nitride powder, -20 Mesh, 99.7% trace Metals basis, Sr: <0.8%
  • tribarium dinitride
  • BariuM nitride (99.7%-Ba)
  • azanidylidenebarium,barium(2+)
  • 12047-79-9
  • Ba3N2
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