Ammonium Tetrathiotungstate
Sulfides

Ammonium Tetrathiotungstate

(NH4)2WS4
Catalog Number
AM-0060
CAS Number
13862-78-7
Purity
>99.9% trace metals basis
Formula Mass
348.18 g/mol
Physical Form
Yellow to orange crystalline powder

Product Description

Ammonium tetrathiotungstate (ATT), (NH4)2WS4, is a yellow to orange crystalline inorganic salt used as a precursor for tungsten sulfide catalysts, coatings, and thin films. Its tetrathiotungstate anion supplies tungsten and sulfur within a single compound, supporting the preparation of WS2 and related sulfide materials through controlled thermal processing. Applications include supported tungsten sulfide catalyst preparation, solution based deposition of WS2 films, and synthesis of transition metal sulfide compounds. Contact Lorad to discuss purity requirements, material specifications, and quantities for development or production.

  • Market Focus: Thin Film Coatings, Catalysts
  • Categories: Sulfides
  • Synonyms: Ammonium thiotungstate, ammonium tetrathiotungstate(VI), diammonium tetrathiotungstate, diammonium tetrasulfidotungstate(VI), ammonium tungsten sulfide, ATT

Additional Properties & Information

Typical Purity >99.9% trace metals basis
Appearance Yellow to orange crystalline powder
Density 2.71 g/cm³ at 25°C
Formula Mass 348.18 g/mol
Crystal System Orthorhombic
Solubility Soluble in water

Product Specifications

Formula Mass 348.18 g/mol
Purity >99.9% trace metals basis
Density 2.71 g/cm³ at 25°C
Crystal System Orthorhombic
Solubility in H2O Soluble in water

Identifiers

Formula (NH4)2WS4
CAS Number 13862-78-7
EC / List Number 628-727-4
MDL Number MFCD00061410
IUPAC Name Diammonium tetrasulfidotungstate(VI)
SMILES [NH4+].[NH4+].[S-][W]([S-])(=S)=S

Safety Information

Signal Word Warning
GHS07 - Warning
Specialty Inorganic Materials Powders and compounds for technical applications
Technical Support Discuss material requirements directly with Lorad
Custom Quantities Quantity options based on product and project requirements
Custom Manufacturing Development and scale support for specialized materials