Phthalogen Blue IBN (Brilliant Blue) Code: Color Index Group INGRAIN BLUE 5 Color Index Number 74161:2 TSCA, USA CAS No. 59800-23-6     Physical form Fine dry powder Colour Dark Blue Moisture Content Less than 2% pH 8-9 Matter Insoluble in 3% Acetic Acid Less than 10 %     Colour Shade in Delta E* Less than 1.5 Colour Strength, % 100 + 5