Potassium Sodium Tartrate
Chemical Name : Rochelle salt; seignette salt
Structural Formula : 
Molecular formula : KNaC4H4O6 . 4H2O
Molecular weight : 282.23
Character : Colorless translucent or white crystalline powder with salt cool taste and has light efforescence in warm air, specific gravity 1.79, melting point 70-80°C, losting 3 molecule water at 100°C and becoming anhydrous salt at 215°C, soluble in water, practically insoluble in ethanol and its aqueous solution appears alkaliscence, PH value 6.8 to 8.
Uses : used as electronating agent (educer) in plating of printing, mirror, and thermos indstries; as complexing agent in electroplating industry; in the making of crystal speekers and microphones in telecom industry; asdesalting agent in chemical fertilizer ustry; and also used in glass industry and other industries.
Packing : 25kg complex bags lined with double-layered kraft paper bags and film bag.
Specifications : Complies with US FCC(III) & Enterprise Standard
US FCC(III)
| Item |
Index |
| Content %≥ |
99.0-102.0 |
| Alkalinity |
Qualified |
| Arsenic (As)% ≤ |
0.0003 |
| Heavy metals(Pb)% ≤ |
0.001 |
| Moisture % |
21-26 |
Enterprise Standard
| Item |
Index |
| Content %≥ |
98.0 |
| Chloride (Cl)% ≤ |
0.005 |
| Heavy metals (Pb)% ≤ |
0.001 |
| Sulphates(SO4)% ≤ |
0.03 |
| Fe %≤ |
0.002 |
| Arsenic(As)%≤ |
0.0002 |
| Reaction of water solution |
Passed |
| Insolude in water %≤ |
0.01 |
