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322385

Sigma-Aldrich

Ammonium tungstate

99.99% trace metals basis

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About This Item

Linear Formula:
(NH4)10H2(W2O7)6
CAS Number:
MDL number:
UNSPSC Code:
12352300
PubChem Substance ID:
NACRES:
NA.23

Quality Level

assay

99.99% trace metals basis

form

powder

reaction suitability

reagent type: catalyst
core: tungsten

SMILES string

N.N.N.N.N.N.N.N.N.N.O[W]12(=O)O[W]3(O)(=O)O[W](O)(=O)(O3)O[W]4(O)(=O)O[W](O)(=O)(O4)O[W]5(O)(=O)O[W]6(=O)(O5)O[W]7(=O)(O[W](O)(=O)(O[W]8(O)(=O)O[W](O)(=O)(O[W](O)(=O)(O1)O2)O8)O7)O6

InChI

1S/10H3N.10H2O.31O.12W/h10*1H3;10*1H2;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;/q;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;10*+1/p-10

InChI key

LMAJGSPZJYEENT-UHFFFAOYSA-D

General description

Ammonium tungstate, also called ammonium paratungstate or APT is a white crystalline salt with a chemical formula either written (NH4)10H2(W2O7)6 or (NH4)10(H2W12O42). APT is extracted from tungsten ores and is the critical raw material for the production of tungsten metal. Additionally, it is employed in the manufacturing of catalysts, pigments, and specialty chemicals. Its applications extend to the electronics industry, where it is utilized in the production of electronic components and semiconductor materials due to its excellent thermal and electrical properties. It is also a key material in the field of energy storage, particularly in the development of advanced batteries and energy-efficient devices.

Application

  • Alkyl Ammonium Tungstate Bonded to Fe3O4@ SiO2 Nanoparticles: This research details the synthesis of a highly efficient catalyst for the oxidation of symmetrical sulfides, which is crucial for various chemical syntheses (Khatami et al., 2023).

Physical form

Soluble form

Analysis Note

Purity excludes ~2000 ppm Mo.

Storage Class

11 - Combustible Solids

wgk_germany

WGK 3

flash_point_f

Not applicable

flash_point_c

Not applicable

ppe

dust mask type N95 (US), Eyeshields, Gloves


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