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Tungsten Salts



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Sodium Tungstate Hydrate
 

Sodium Tungstate

CAS NO. : 10213-10-2

 

Uses :- Intermediate in preparation of tungsten compound, Reagent, Fire proofing fabrics & cellulose, Alkaloid precipitant.

Specifications:

Na2WO4.2H2O Mol. Wt. 329.86
Assay 98% Min
Free alkali (as NaOH) 0.1% Max
Chloride (Cl) 0.01% Max
Sulphate (SO4) 0.02% Max
Total Nitrogen (N) 0.005% Max
Iron (Fe) 0.002% Max
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Tungstic Acid
 

 

Tungstic Acid
CAS NO. : 7783-03-1

 

Uses :- Production of tungsten metal and its derivatives, Fire proofing fabrics and cellulose, Reagent for uric acid, Alkaloids, Plasma proteins, Blood sugar, Clinical analysis of blood, Textile (mordant, color resist) plastics, To form metal by reduction, Alloys, Preparation of tungstate for x-ray screen, Yellow pigment in ceramic.

Specifications:

H2WO4. 2H20 MOL. Wt: 249.87
Description An Amorphous Yellow Powder
Total Assay 99.0% Min
Sulpher (S) 0.060% Max
Molybdenum (Mo) Traces
Arsenic (As) Less Than 2PPM
Copper (Cu) 0.006% Max
Phosphorous (P) 0.002% Max
Nitrate (NO3) 0.004% Max
Chlorides (Cl) 0.005% Max
Sulphate (SO4) 0.015% Max
Iron (Fe) 0.002%

 

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Phosphotungstic Acid Hydrate
 

Phosphotungstic Acid
CAS No. : 12501-23-4

   
Synonyms : Phosphowolframic Acid; tungstophosphoric Acid

Chemical Formula : H3PO4*12WO3*xH2O
Formula Weight : 2898.17
Appearance : Off-White crystalline powder
Turning yellow on exposure to light Assay (with Cinchonine) : 65.0% to 70.0%
Insoluble Matter : 0.10% maximum
Chloride (Cl) : 0.30% maximum
Nitrate (NO3) : 0.05% maximum
Sulfate (SO4) : 0.20% maximum
Ammonium (NH4) : 0.05% maximum
Heavy Metals (as Pb) : 0.05% maximum
Iron (Fe) : 0.02% maximum

 

 

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Sodium Metatungstate
 

Sodium Meta tungstate Hydrate

CAS NO. : 314075-43-9

Sodium metatungstate is a new component in the production of heavy solutions. It brings a number of advantages with it when compared to zinc - chloride solutions or highly toxic halogenous hydrocarbons used in sink or swim analysis.

formula : na6[h2w12o40] or 3na2wo4 . 9wo3 . xh2o

cas name : tungstate (w12 (oh) 20386-), hexasodium, hydrate


mol. Weight : 2968. 12

appearance : white crystals or light yellow-green transparent solution.

properties : very easily soluble in water, ph-neutral solution, maximum possible density of solution : 3,1 g/cm3 at 25? ? C.

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Tungsten Trioxide
 

Tungsten Trioxide  

CAS NO. : 1314-35-8

Uses :- To form metal by reduction, Alloys, Preparation of tungstates for x-ray screens, Fireproofing fabrics, Yellow pigments in ceramics and others.

Physical Properties :


Color : Yellow / Green
Apparent density : 2.2 gm/cc
Grain size : 9.5 micron

Chemical Properties:

Sr .No. Maximum allowed As actual
Ca 10 6
Fe 20 6
K 10 02
Na 15 06
Mo 30 03
Si 10 03
Co 10 03
Wo3 99.97% 99.98%
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Silicotungstic Acid
 
 SILICO TUNGSTIC ACID
Tungstosilicic acid hydrate
 
Purity                                                  : 99.5%
CAS No.                                             : 12027-43-9
Molecular Formula                              : H4(SiW12O40)xH2O
Molecular Weight                               : 2878.17 (anhydrous basis)
H.S. Code                                           : 2811.1980
pH value                                              : Acidic
Solubility in water [% weight]            : Soluble in water

 
Specifications
 
Appearance
Slightly yellow colored powder
Assay
Min 99.5%
Chloride (Cl)
Max 0.001%
Sulphate (SO4)
Max 0.005%
Total Nitrogen
Max 0.002%
Heavy metals (as Pb)
Max 0.002%
Iron (Fe)
Max 0.001%
Sodium (Na)
Max 0.02%
Potassium (K)
Max 0.02%
Loss on ignition (at 750 degC)
Max 16.0%
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Tungsten Disulphide
 

Tungsten Disulphide Chemical
CAS NO. : 12138-09-9

 

Uses :
It mainly has application in spraying, coating, carbon material, super rigidity material, and weld thread material, all sorts of grease, lubricating oil, friction materials and catalyses.

WS2 can be applied for lubricants such as grease, oil and synthetic lubricants as an additive with powder form 1% to 15%

Specifications:
 

Properties WS2
Colour Silver Gray
Appearance Crystalline Solid
Melting Point (oC) 1250oC, 1260oC (decomposes)
Density (Kg.m-3) 7500
Molecular Weight 248
Coefficient of Friction 0.03 Dynamic; 0.07 Static
Lubrication Temperature Range Ambient: from -273oC to 650oC Vacuum (10 -14 Torr): from -188oC to 1316oC
Chemical Durability Inert Substance, Non-Toxic
Coatable Substrates Iron, Steel, Aluminum, Copper, other Metals, Plastics and Manmade Solids

 

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Ammonium Para Tungstate
 

Ammonium Para Tungstate
CAS NO. : 11120-25-5

 

Uses :- Production of tungsten metal and its derivatives, Fire proofing fabrics and cellulose, Reagent for uric acid, Alkaloids, Plasma proteins, Blood sugar, Clinical analysis of blood, Textile (mordant, color resist) plastics, To form metal by reduction, Alloys, Preparation of tungstate for x-ray screen, Yellow pigment in ceramic.

Physical Properties :


Color : White powder
Ignition Residue as % Wo3 at 700 : 89 + 1 % Max
Grain Size F.S.S.S. : 18 - 25 Micron


Chemical Properties :

Component % / PPM
Ca 0.002
Na 0.003
K 0.002
Moly 0.001
Si 0.001
Fe 0.001
Sn 0.001
As 0.001
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Ammonium Meta Tungstate
 

Ammonium Meta Tungstate
CAS no. : 12025-48-7



name : amt-72 ammonium metatungstate high purity type
molecular formula : (nh4)6[h2w12o40]? ? ? Nh2o (n6)
molecular weight : 3,064
wo3theoretical content : 90. 8%
specifications :
wo3 : 90. 8%
mo : 0. 01%
fe : 0. 04%
ca : 0. 05%
na : 0. 15%
k : 0. 15%
ni : 0. 03%
cu : 0. 03%
al : 0. 04%
mg : 0. 03%
packing : net25kg carton box
Applications
electronic material

 

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Cadmium tungstate
 

CADMIUM TUNGSTATE

CAS NO. : 7790-85-4

 


Specifications:

 

Linear Formula CdWO4
Molecular Weight 360.25
Appearance (Color) White or Yellow Powder
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Cobalt Tungstate
 

COBALT TUNGSTATE

CAS NO. : 12640-47-0

 


Specifications:

 

Linear Formula CoWO4
Molecular Weight 306.77
Appearance (Color) Reddish Orange Powder
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Cesium Tungstate
 

CESIUM TUNGSTATE

CAS NO. : 13587-19-4

 


Specifications:

 

Linear Formula Cs2WO4
Molecular Weight 513.65
Appearance (Color) White to off-White Powder
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Magnesium Tungstate
 

MAGNESIUM TUNGSTATE

CAS NO. : 13573-11-0

 


Specifications:

 

Linear Formula MgWO4
Molecular Weight 272.14
Appearance (Color) White Crystalline Powder
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Bismuth Tungsten Oxide
 
Specifications - Bismuth Oxide

CAS Number

  13595-87-4

Linear Formula

-

Bi2(WO4)3

Molecular Weight

-

1161.47

Appearance (Color)

-

Cream flavor powders

Purity

-

99.5%

 

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Manganese Tungstate
 

MANGANESE TUNGSTATE

CAS NO. : 14177-46-9

 


Specifications:

 

Linear Formula MnO4W
Molecular Weight 302.78
Appearance (Color) Yellow Powder
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Barium Tungstate
 

BARIUM TUNGSTATE

CAS NO. : 7787-42-0

 


Specifications:

 

Linear Formula BaWO4
Molecular Weight 385.16
Appearance (Color) White Powder
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