Ammonium Paratungstate

CAS No.:	11120-25-5
Linear Formula:	H40N10O41W12 • xH2O
Appearance:	White crystalline powder
Purity:	≥99%

 

Product Description

Ammonium Paratungstate (APT) is a high-purity tungsten compound that serves as the primary raw material for tungsten-based products. It is a white crystalline powder that contains tungsten in its highest oxidation state and is commonly used in the production of tungsten metal, tungsten carbide, and tungsten-based catalysts.

APT is an essential intermediate in the tungsten refining process and is obtained through the chemical processing of tungsten ores, primarily scheelite and wolframite. Its high solubility in water and ability to decompose into tungsten oxides make it a crucial compound for various industrial applications.

 

Features & Properties

High Purity: Typically 99.95% pure tungsten content.

Excellent Solubility: Readily dissolves in water for easy processing.

Thermal Stability: Decomposes to tungsten oxides at high temperatures.

Uniform Particle Size: Ensures consistency in downstream processing.

Versatile Applications: Used in tungsten refining, catalysts, and metal production.

 

Product Forms

Fine Powder

Crystalline Granules

 

Production Method & Production Equipments

Production Method:

Ore Processing: Tungsten ore (wolframite or scheelite) is leached with sodium hydroxide or acid to extract tungsten.

Purification: Impurities are removed through precipitation and filtration.

Crystallization: Ammonium tungstate solution is crystallized by evaporation or pH adjustment to obtain APT.

Drying & Sieving: The final product is dried and sieved to achieve the desired particle size.

Quality Control: XRD, ICP, and SEM analysis ensure high purity and uniformity.

Production Equipments:

Leaching Reactors

Filtration & Purification Units

Crystallization Tanks

Spray Dryers

Particle Size Analyzers

 

Applications & Related Industries

Tungsten Metal Production: Used to produce tungsten powder and tungsten carbide for industrial applications.

Catalysts & Chemical Industry: APT serves as a precursor for tungsten-based catalysts.

Aerospace & Defense: Used in high-density tungsten alloys for aerospace applications.

Electrical & Electronics: Forms tungsten components in semiconductors and filaments.

Hard Metals & Cutting Tools: Used in the production of tungsten carbide for wear-resistant tools.

 

Interesting Facts

APT is the primary precursor for producing tungsten metal and its compounds.

It is widely used in catalyst production due to its high tungsten content.

The controlled crystallization of APT determines the quality of tungsten carbide.

APT can be converted into tungsten oxide, which is further reduced to tungsten metal.

 

Synonyms

Ammonium Tungstate Hydrate

(NH₄)₁₀[H₂W₁₂O₄₂] · xH₂O

APT

 

Health & Safety Information

Handling Precautions: Avoid inhalation and direct skin contact; use in a ventilated area.

Storage Conditions: Store in a dry, cool place away from strong acids and bases.

Protective Equipment: Wear gloves, safety goggles, and dust masks.

Disposal Considerations: Follow local environmental regulations for disposal.

 

Why Choose Us for Your Ammonium Paratungstate (APT) Needs?

✔ High Purity & Consistency: Our APT meets strict industry standards for tungsten refining.
✔ Advanced Processing Techniques: Ensures superior crystallinity and stability.
✔ Global Supply & Competitive Pricing: Reliable delivery with cost-effective solutions.
✔ Customizable Specifications: Available in different purities, particle sizes, and packaging.
✔ Technical Support: Expert guidance for tungsten refining and industrial applications.

 

Contact Us Today

For pricing, technical specifications, or custom orders, get in touch with our team today. We're ready to help you find the best solution for your Ammonium Paratungstate needs.

 

Ammonium Paratungstate Specification

Grade	APT-0
WO3 (%min)	88.5
Impurities (%max)	Al	Fe	S	As	P	Mo	Ca	Mg	K	Na	Si
	0.0005	0.001	0.0007	0.001	0.0007	0.002	0.001	0.0007	0.001	0.001	0.001
	Cu	Mn	Ni	Pb	Bi	Sn	Sb	V	Ti	Cr	Co
	0.0003	0.001	0.0007	0.0001	0.0001	0.0008	0.001	0.001	0.001	0.001	0.001

Chemical Identifiers

Linear Formula	H40N10O41W12 • xH2O
MDL Number	MFCD00015956
EC No.	234-364-9
Beilstein/Reaxys No.	N/A
Pubchem CID	71306883
IUPAC Name	N/A
SMILES	N.N.N.N.N.N.N.N.N.N.O[W]12(=O)O [W]3(=O)(O[W](=O)(O3)(O[W]4(=O )(O[W](=O)(O4)(O[W]5(=O)(O[W]6( =O)(O5)O[W]7(=O)(O6)O[W](=O)(O 7)(O[W]8(=O)(O[W](=O)(O8)(O[W] (=O)(O1)(O2)O)O)O)O)O)O)O)O)O
InchI Identifier	InChI=1S/10H3N.10H2O.31O.12W/h10*1H3;10*1H2;/q;10*+1/p-10
InchI Key	LMAJGSPZJYEENT-UHFFFAOYSA-D

Ammonium Paratungstate Properties (Theoretical)

Compound Formula	H40N10O41W12
Molecular Weight	3042.44 (anhydrous)
Appearance	White crystalline powder
Melting Point	>300°C
Boiling Point	600°C (dec.)
Density	2.3 g/cm3
Solubility in H2O	N/A
Exact Mass	3041.547116
Monoisotopic Mass	3041.547116

Ammonium Paratungstate Health & Safety Information

Signal Word	Warning
Hazard Statements	H315-H319-H335
Hazard Codes	Xi
Risk Codes	36/37/38
Safety Statements	26-36
RTECS Number	N/A
Transport Information	NONH for all modes of transport
WGK Germany	3

 

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