12028-48-7 Usage
Description
Ammonium metatungstate is a white crystalline compound with the chemical formula (NH4)6H2W12O40 or (NH4)6W12O39·4H2O. It is prepared through the reaction of NH4OH with tungstic acid.
Uses
Used in Metallurgy Industry:
Ammonium metatungstate is used as a precursor for the preparation of tungsten alloys, which are known for their high melting points, density, and hardness. These alloys are essential in various applications, such as in the manufacturing of electrical contacts, filaments, and other components that require high-temperature resistance and strength.
Used in Chemical Industry:
Ammonium metatungstate is also used in the preparation of ammonium phosphotungstate, a compound that has potential applications in various chemical processes and as a catalyst in certain reactions. This makes it a valuable intermediate in the chemical industry for the synthesis of other tungsten-containing compounds.
Flammability and Explosibility
Notclassified
Check Digit Verification of cas no
The CAS Registry Mumber 12028-48-7 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,2,0,2 and 8 respectively; the second part has 2 digits, 4 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 12028-48:
(7*1)+(6*2)+(5*0)+(4*2)+(3*8)+(2*4)+(1*8)=67
67 % 10 = 7
So 12028-48-7 is a valid CAS Registry Number.
InChI:InChI=1/6H3N.H2O.39O.12W/h6*1H3;1H2;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;/q;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;6*-1;;;;;;;;;;;;/p+6/r6H3N.O39W12.H2O/c;;;;;;1-40(2,3)29-43(10,11)32-46(16,17)35-49(22,23)38-51(26,27,28,37-48(20,21)34-45(14,15)31-42(7,8)9)39-50(24,25)36-47(18,19)33-44(12,13)30-41(4,5)6;/h6*1H3;;1H2/q;;;;;;-6;/p+6
