Specifications of Sodium Perborate BP Ph Eur Grade:
Hydrated Sodium Perborate
NaBO3-4H2O or NaBO2-H2O2,3H2O --- 153.9
Action and use: Antiseptic.

DEFINITION
Content: 96.0 per cent to 103.0 per cent.

CHARACTERS
Appearance: Colourless, prismatic crystals or white or almost white powder, stable in the crystalline form.
Solubility: Sparingly soluble in water, with slow decomposition. It dissolves in dilute mineral acids.

IDENTIFICATION
A. Dissolve 20 mg in a mixture of 1 mL of dilute sulfuric acid and 1 mL of wate. Add 1 mL of potassium iodide solution. A reddish-brown colour appears.
B. The mixture obtained by treating about 100 mg with 0.1 mL of sulfuric acid and 5 mL of methanol burns with a greenish flame when ignited.
C. It gives reaction of sodium.

TESTS
Chloride: Maximum 330 ppm.
Sulfates: Maximum 1.2 per cent.
Iron: Maximum 20 ppm.