Sodium perborate (PBS) is a white, odorless, water-soluble chemical compound with the chemical composition NaBO3. It crystallizes as the monohydrate, NaBO3·H2O, trihydrate, NaBO3·3H2O and tetrahydrate, NaBO3·4H2O. The monohydrate and tetrahydrate are the commercially important forms. The elementary structural unit of sodium perborates is a dimer anion B2O4(OH)42–, in which two boron atoms are joined by two peroxo bridges in a chair-shaped 6-membered ring, and the simplistic NaBO3·nH2O-type formulas are just a convenient way to express the average chemical composition.
ITEM SPECIFICATION RESULT
Appearance: White crystalline granules,free-flowing
Available Oxygen(%): 15.0MIN 15.38Assay,% 93.0%MIN 95.94%Bulk Density(g/l) : 540-640 622PH test,30g/l: 9.5-10.5 10.22Ferric (PPM): 15MAX 6.2Humidity stability(%) 82MIN 85.28Partical size
Retained on20mesh(%) 2.0MAX 0.63R5emtaeinset(d% ) on15.0-80.0 3.01T0h0rmouegshh (%)5.0MAX 1.0