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Ammonium Paratungstate

CAS #:

Linear Formula:

H40N10O41W12 • H2O

MDL Number:


EC No.:



(2N) 99% Ammonium Paratungstate
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(3N) 99.9% Ammonium Paratungstate
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(4N) 99.99% Ammonium Paratungstate
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(5N) 99.999% Ammonium Paratungstate
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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
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 N/A
WGK Germany 3

About Ammonium Paratungstate

Ammonium Paratungstate is generally immediately available in most volumes, including bulk orders. American Elements can produce materials to custom specifications by request, in addition to custom compositions for commercial and research applications and new proprietary technologies. American Elements also casts any of the rare earth metals and most other advanced materials into rod, bar or plate form, as well as numerous other machined shapes, nanomaterials, and in the form of solutions and organometallic compounds. American Elements produces to many standard grades when applicable, including Mil Spec (military grade); ACS, Reagent and Technical Grade; Food, Agricultural and Pharmaceutical Grade; Optical Grade, USP and EP/BP (European Pharmacopoeia/British Pharmacopoeia) and follows applicable ASTM testing standards. Typical and custom packaging is available. Additional technical, research and safety (MSDS) information is available as is a Reference Calculator for converting relevant units of measurement.

Ammonium Paratungstate Synonyms

APT, Ammonium tungsten oxide, Ammonium tungstate, ammonium wolframate, Ammonium tungstate(VI), Tungstate (W12(OH)2O4010-), decaammonium, diammonium tungstate, diazanium dioxido(dioxo)tungsten, Ammonium (para)tungstate hydrate, Ammonium Para-Tungstate, 12028-06-7, 11140-77-5

Chemical Identifiers

Linear Formula H40N10O41W12 • H2O
MDL Number MFCD00015956
EC No. 234-364-9
Beilstein Registry No. N/A
Pubchem CID 71306883
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

Packaging Specifications

Typical bulk packaging includes palletized plastic 5 gallon/25 kg. pails, fiber and steel drums to 1 ton super sacks in full container (FCL) or truck load (T/L) quantities. Research and sample quantities and hygroscopic, oxidizing or other air sensitive materials may be packaged under argon or vacuum. Shipping documentation includes a Certificate of Analysis and Safety Data Sheet (SDS). Solutions are packaged in polypropylene, plastic or glass jars up to palletized 440 gallon liquid totes, and 36,000 lb. tanker trucks.

Related Elements

See more Tungsten products. Tungsten (atomic symbol: W, atomic number: 74) is a Block D, Group 6, Period 6 element with an atomic weight of 183.84. The number of electrons in each of tungsten's shells is [2, 8, 18, 32, 12, 2] and its electron configuration is [Xe] 4f14 5d4 6s2. Tungsten Bohr ModelThe tungsten atom has a radius of 139 pm and a Van der Waals radius of 210 pm. Tungsten was discovered by Torbern Bergman in 1781 and first isolated by Juan José Elhuyar and Fausto Elhuyar in 1783. In its elemental form, tungsten has a grayish white, lustrous appearance. Elemental TungstenTungsten has the highest melting point of all the metallic elements and a density comparable to that or uranium or gold and about 1.7 times that of lead. Tungsten alloys are often used to make filaments and targets of x-ray tubes. It is found in the minerals scheelite (CaWO4) and wolframite [(Fe,Mn)WO4]. In reference to its density, Tungsten gets its name from the Swedish words tung and sten, meaning heavy stone.

See more Nitrogen products. Nitrogen is a Block P, Group 15, Period 2 element. Its electron configuration is [He]2s22p3. Nitrogen is an odorless, tasteless, colorless and mostly inert gas. It is the seventh most abundant element in the universe and it constitutes 78.09% (by volume) of Earth's atmosphere. Nitrogen was discovered by Daniel Rutherford in 1772.


January 23, 2019
Los Angeles, CA
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