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Pigment Red 21 for Coatings and Textile Printing. Bright Yellowish-Red with Strong Tinting Power: Pigment Red 21 (C.I. 12300) delivers bright, yellowish-red shades with good light fastness (Grade 6-7) and excellent acid/alkali resistance. Versatile Applications for Coatings, Inks, and Plastics: Widely used in industrial paints, baking enamels, offset inks, water-based inks, PVC, LDPE, leather, and cosmetics. Reliable Quality You Can Count On: Yellowish-red powder. Insoluble in water, oil, ethanol, and paraffin. Heat stability up to 160 degree. Cost-effective general-purpose red pigment.