Ammonium paratungstate

Ammonium paratungstate

CAS Number
11120-25-5
Molecular Formula
H42N10O42W12
Purity
Up To 99.0%
Tungstate (W12(OH)2O4010-), ammonium (1:10) (ACI)Intermediate Tungsten Carbide PowderAPT for High-Density Defense AlloysTungsten Chemical Feedstock Semiconductor GatesHydrogenolysis Catalyst Precursor APTAmmonium Paratungstate vs Ammonium Metatungstate(AMT)

About Ammonium paratungstate

Ammonium Paratungstate (APT) ((NH₄)₁₀[H₂W₁₂O₄₂]·xH₂O) (CAS 11120-25-5) is a critical tungsten intermediate widely supplied by ammonium paratungstate manufacturers and suppliers in the USA, serving as the benchmark compound for producing tungsten oxide (WO₃), tungsten metal powder, and downstream tungsten carbide. Suppl...

Synonyms

  • Ammonium paratungstate
  • Ammonium tungstate
  • Ammonium tungstate(VI)
  • tungsten standard solution
  • 'Ammonium Tungstate, 25g'

Ammonium paratungstate Specifications

CAS Number
11120-25-5
Molecular Formula
H42N10O42W12
Molecular Weight
3060.48
IUPAC Name
decaazanium;hexakis(dioxido(dioxo)tungsten);hydron;hexakis(trioxotungsten) /
Canonical SMILES
[H+].[H+].[NH4+].[NH4+].[NH4+].[NH4+].[NH4+].[NH4+].[NH4+].[NH4+].[NH4+].[NH4+].[O-][W](=O)(=O)[O-].[O-][W](=O)(=O)[O-].[O-][W](=O)(=O)[O-].[O-][W](=O)(=O)[O-].[O-][W](=O)(=O)[O-].[O-][W](=O)(=O)[O-].O=[W](=O)=O.O=[W](=O)=O.O=[W](=O)=O.O=[W](=O)=O.O=[W](=O)=O.O=[W](=O)=O
InChI Key
XAYGUHUYDMLJJV-UHFFFAOYSA-Z
InChI
1S/10H3N.42O.12W/h10*1H3;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;/q;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;12*-1;;;;;;;;;;;;/p+12
EINECS Number
234-364-9
HSN No
28418010
Molecular Weight
3060.48
W03 %
89.05%
Grade
Extra Pure
Physical State
Solid
Odour
Odour less
Melting Point(C)
Decomposes at 600"C
Density (g/cm")
2.3 g/ml at 25'C (lit.)
(NH4)10H2W12O42.xH2O Purity
Up To 99.0%
Hazard Classes and Categories
Skin Irrit. 2 (100%), Eye Irrit. 2 (100%), STOT SE 3 (100%)
Precautionary Statement Codes
P261, P264, P264+P265, P271, P280, P302+P352, P304+P340, P305+P351+P338, P319, P321, P332+P317, P337+P317, P362+P364, P403+P233, P405, and P501

Tungsten Metal & Powder Manufacturing

Ammonium Paratungstate is the primary upstream intermediate used by tungsten processors to produce tungsten oxide and subsequently tungsten metal powder, which is critical for cutting tools, aerospace components, and defense manufacturing supply chains.

Electronics & Electrical Components

Tungsten derived from APT is used in electronic components such as electrodes, filaments, and high-temperature electrical systems, supporting semiconductor manufacturing and advanced electronics production in the United States.

Catalysts & Chemical Processing

Ammonium paratungstate is used as a precursor for tungsten-based catalysts applied in petrochemical refining, hydrogenation, and environmental processing systems where stable catalytic performance is essential.

Ceramics, Pigments & Specialty Materials

APT is used in ceramic formulations and pigment systems, including porcelain coloring and specialty materials, where tungsten compounds provide thermal stability and functional performance in high-temperature environments.

Storage Stability

Stable at room temperature. When heated above 250°C, it begins to decompose, releasing ammonia and water to form tungsten trioxide (WO3)

Storage Section

Store in a cool, dry, well-ventilated warehouse. Keep containers tightly closed to prevent moisture absorption (hygroscopicity) which can cause caking.

Shipping

Generally non-hazardous for transport. Available in 25kg/50kg plastic-lined woven bags, fiber drums, or 1000kg "Big Bags" for international industrial supply

  1. Ammonium paratungstate
  2. Ammonium tungstate
  3. Ammonium tungstate(VI)
  4. tungsten standard solution
  5. 'Ammonium Tungstate, 25g'

Ammonium paratungstate FAQs

Minimum Order Quantity

25 kg (evaluation) · 1 MT (commercial)

Lead Time

3 – 5 weeks estimated

Delivery Terms

FOB*

Packaging

20 L pails, 200 L HDPE drums, 1000 L IBC

US Availability

US Facility Inventory

Documentation

US SDS · COA · TDS · Specification sheet

US Regulatory & Quality Information

TSCA status*

US SDS / HazCom*

GHS classification*

ISO 9001:2015 site*

DOT shipping classification*

FDA status*

EPA status*

California Prop 65*

Reliable US supply chain

Regulatory compliance

On-time delivery

Technical expert support

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