Information
Specification category:
Product No. | Product name | specifications |
1.01462.010 | Sodium tartrate dihydrate | AR500g |
1.01462.020 | Sodium tartrate dihydrate | CP500g |
Characteristic:
Appearance and properties:white tasteless powder.
pH value:~8(50 g/L H2O,25℃)
Melting point(℃):57
Bulk density:~460 kg/m3
Density:1.82 g/cm3
Thermal decomposition:~120℃ (release the liquid crystal), 255℃ (anhydrous substance)
Solubility:water 290 g/L(20℃), ethanol insoluble
Technical indicators:
Item | AR | CP |
Assay(C4H4O6Na2•2H2O) | ≥99.0% | ≥98.0% |
pH valuepH value(50g/Lsolution,25℃) | 7.0~9.0 | 7.0~9.0 |
Clarity of solution | Pass3 | Pass5 |
Insoluble matter in water | ≤0.005% | ≤0.01% |
Chloride(Cl) | ≤0.002% | ≤0.005% |
Sulfate(SO4) | ≤0.005% | ≤0.01% |
Phosphate(PO4) | ≤0.002% | -- |
Iron(Fe) | ≤0.001% | ≤0.005% |
Heavy metals(as Pb) | ≤0.0005% | ≤0.001% |