Titanium Dioxide, Color : White, Form : Powder

Titanium Dioxide BP Ph Eur Grade Specifications
TiO2 --- 79.9 --- CAS 13463-67-7
Action and use: Protective; excipient.

DEFINITION
Content: 98.0 per cent to 100.5 per cent.

CHARACTERS
Appearance: White or almost white powder.
Solubility: Practically insoluble in water. It does not dissolve in dilute mineral acids but dissolves slowly in hot concentrated sulphuric acid.

IDENTIFICATION
A. When strongly heated, it becomes pale yellow; the colour disappears on cooling.
B. To 5 ml of solution S2 (see Tests) add 0.1 ml of strong hydrogen peroxide solution R . An orange-red colour appears.
C. To 5 ml of solution S2 add 0.5 g of zinc in granules. After 45 min, the mixture has a violet-blue colour.