Ammonium metatungstate | SSHADE

Solid phase

Official name: Ammonium metatungstate

Name and identifiers

Secondary names: hexakis(ammonium) dihydrogendodecatungstate
CAS number: 12333-11-8

Family: ionic solid
Class: acid salt
Compound type: tungstate

Chemical composition

Formula: $(NH_4^+)_6 \cdot [H_2W_{12}O_{40}]^{6-}$
Chemical formula: (NH4)6H2W12O40
Elemental formula: (N+)6 (H)26-2 W12 O34 (O-)6
Isotope mixture type: terrestrial abundance

14.0

	Formula	Name	Family	Number min-max	Mole fraction	Isotope mole fraction	State	Relevance
	$H_4 >\mid N^+$	quaternary ammonium ion group	chemical function	6	0.8571428571428571	1	molecular ion	main
	$\alpha-[H_2W_{12}O_{40}]^{6-}$	Protonated metatungstate anion	molecule	1	0.14285714285714285	1	molecular ion	main

Chemical functions and bonds

Chemical functions

	Function	Number
	$H_4 >\mid N^+$	6

Chemical bonds

	Bond	Number
	$\geq\mid W-O$	66
	$\geq\mid W-O^-$	6
	$-O-H$	2

Class: acid salts (05)
Type: simple acid salts (05.01)

Crystallography

Phase type: crystalline
Crystal system: isometric (cubic)
Comments: distorded cubic at high hydration

Physical properties

Molar mass: 2956.2 $g/mol$
Density: 5.293 $g/cm^3$

Thermodynamical properties

State NTP: solid

Optical properties

Refringence type: isotropic
Color: beige

Links and Publications

Links