White or slight yellow crystalline powder, easily soluble in water.
Assay: ≥99.5%
Chloride (Cl): ≤0.01%
Fe: ≤0.002%
Heavy metal: ≤0.002%
Arsenic (As): ≤0.0003%
Melting point: 197-201℃
Residue on Ignition: ≤0.05%
Loss on dry: ≤0.1%
PH value (20% aq. solution): 10.5-11.0
Shelf life: Two years
Storage: Store in a cool and dry place.
Uses: For the synthesis of organic products, industrial detergent intermediates and biochemical studies.