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10035

Sigma-Aldrich

Ammonium metatungstate hydrate

≥85% WO3 basis (gravimetric)

Sinônimo(s):

AMT, Hexaammonium wolframate hydrate, Tungstic acid hexaammonium salt

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About This Item

Fórmula linear:
(NH4)6H2W12O40 · xH2O
Número CAS:
12333-11-8
Peso molecular:
2956.30 (anhydrous basis)
Número CE:
234-733-4
Número MDL:
MFCD00150662
Código UNSPSC:
12352300
ID de substância PubChem:
57646791
NACRES:
NA.23

Ensaio

≥85% WO3 basis (gravimetric)

forma

solid

adequação da reação

reagent type: catalyst
core: tungsten

Impurezas

≤0.005% water-insoluble matter

perda

≤15% loss on ignition

pf

100 °C (dec.) (lit.)

cadeia de caracteres SMILES

N.N.N.N.N.N.O.O[W]1O[W](O)(=O)(O1)O[W]2(=O)(=O)O[W](O)(=O)(O2)O[W]3(=O)(=O)O[W](O)(=O)(O3)O[W]4(=O)(=O)O[W](O)(=O)(O[W]5(=O)(=O)O[W](O)(=O)(O[W]6(=O)(=O)O[W](O)(O)O6)O5)O4

InChI

1S/6H3N.9H2O.32O.12W/h6*1H3;9*1H2;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;/q;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;6*+1;+2/p-8

chave InChI

ZBHPUDGBNLMJQH-UHFFFAOYSA-F

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Descrição geral

Ammonium metatungstate hydrate is used as a starting material to prepare catalysts for the reduction of NOx. It can also be used as a precursor to synthesize tungsten oxide thin films by chemical vapor deposition method.

Aplicação

  • Effect of morphology properties of NiW catalysts on hydrodesulfurization for individual sulfur compounds in fluid catalytic cracking diesel: This research discusses the influence of ammonium metatungstate hydrate in the preparation of NiW catalysts, focusing on its role in hydrodesulfurization processes (X Tao et al., 2014).
  • Preparation of quaternary tungsten bronze nanoparticles by a thermal decomposition of ammonium metatungstate with oleylamine: This study examines the decomposition pathways of ammonium metatungstate hydrate into metatungstate anions and their applications in creating tungsten bronze nanoparticles (J Choi et al., 2015).

Pictogramas

CorrosionExclamation mark
GHS05,GHS07

Palavra indicadora

Danger

Frases de perigo

H302,H318

Classificações de perigo

Acute Tox. 4 Oral - Eye Dam. 1

Código de classe de armazenamento

11 - Combustible Solids

Classe de risco de água (WGK)

WGK 2

Ponto de fulgor (°F)

Not applicable

Ponto de fulgor (°C)

Not applicable

Equipamento de proteção individual

dust mask type N95 (US), Eyeshields, Gloves

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Certificados de análise (COA)

Lot/Batch Number
STBL1756
STBL1153
STBK5792
STBK5518
BCCB7703

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Daniel Delgado et al.
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Materials from the WO3-Nb2O5 system, presenting bronze-type crystal structures, display outstanding functional properties for several applications as thermoelectric materials, lithium-ion battery electrodes, or catalysts. In this work, a series of W-Nb-O oxide bronzes have been synthesized by the hydrothermal method
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WO3-treated fullerene/TiO2 composites (WO3-fullerene/TiO2) were prepared using a sol-gel method. The composite obtained was characterized by BET surface area measurements, X-ray diffraction, scanning electron microscopy, energy dispersive X-ray analysis, transmission electron microscopy, and UV-vis analysis. A methyl orange (MO) solution
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