PIGMENT RED 112/ HP RED 2622

C.I.NO.: PR112

Advantage: Bright Color, High color strength

Main Application Recommended: Water based inks, Industrial coatings

Product Description – PR112

Recommended Application：

Coatings: solvent based coatings, water based coatings, automotive finishes, industrial coatings, powder coatings, coil coatings

Printing inks: offset inks, solvent based inks, water based inks

Technical Data:

• Light fastness: Light fastness rating is assessed on 1 to 8 Blue Wool scale where 1 = ‘Poor’ and 8 = ‘Excellent’.
• Heat Stability : Heat stability values given indicate the maximum temperature at which the pigment can be stoved for 10 min. on the full shade and in reductions without undergoing any significant change in shade.
• Oil absorption: The oil absorption is determined on the basis of EN ISO 787-5 and given in g linseed oil per 100 gm. pigment.
• Solvent bleeding: The bleeding in solvents is tested using the powder grades and the visual rating given on 1 to 5 Grey scale
  where 1 = ‘Heavy bleeding’ and 5 = ‘No bleeding”

Disclaimer – The information given in this data sheet is based on the present state of our knowledge & is intended as a general description of our products & their possible applications. Due to the multitude of formulations, production & application conditions, all the above mentioned data have to be adjusted to the circumstances of the processor. No liabilities, including those for patent rights, can be derived from this fact for individual cases. It cannot be ruled out that this product contains particles < 0.1 μm. Any user of this product is responsible for determining the suitability of Honor Pigments’s products for its particular application & to ensure that any proprietary rights & existing laws & legislation are observed.

Frequently Asked Questions — PIGMENT RED 112

What is the CI number and chemical type of Pigment Red 112 (HP RED 2622)?

Pigment Red 112 (HP RED 2622) has the Colour Index Number PR112 and is classified as a naphthol AS monoazo pigment (EINECS/ELINCS: available per request). This chemical type delivers a brilliantly bright, mid-to-bluish red shade with exceptionally high color strength, making it a cost-effective alternative to higher-performance pigments like quinacridones. The pigment is recommended primarily for water-based inks and industrial coatings, including offset inks, solvent-based coatings, and powder coatings.

How does PR112’s heat stability and light fastness perform in water-based ink formulations?

PR112 (HP RED 2622) demonstrates excellent heat stability up to 200°C and good light fastness, particularly in water-based ink systems for flexo and gravure printing. In printing inks, it exhibits excellent lightfastness and soap fastness, ensuring durability in applications like packaging and commercial printing. For paint systems, it is recommended for drying paints and baking enamels, where it maintains color integrity under moderate thermal and UV exposure.

Can PR112 be used in industrial coatings and automotive finishes, and what are its limitations?

Yes, PR112 is recommended for solvent-based coatings, water-based coatings, industrial coatings, and automotive finishes, as well as powder and coil coatings. However, its weather resistance is lower than that of quinacridone pigments like PR122, making it less suitable for exterior applications without protective overcoats. It performs optimally in interior or moderate-exposure environments where its high color strength and brightness are prioritized.

What are the key physical properties of PR112, such as specific density and surface area?

PR112 (HP RED 2622) has a specific density of 1.40 g/cm³ and a specific surface area of 45 m²/g, which contribute to its high tinting strength and efficient dispersion in water-based and solvent-based systems. It also offers good resistance to acids but limited resistance to alkalis, which should be considered when formulating for alkaline substrates. Its physical form is a dry powder, suitable for direct incorporation into ink and coating premixes.

Why is PR112 preferred over PR122 for cost-sensitive red shade applications?

PR112 is preferred over PR122 in cost-sensitive applications because it provides a bright, mid-to-bluish red shade with very high color strength at a lower price point. While PR122 (a quinacridone) offers superior lightfastness and weather resistance, PR112 delivers adequate performance for interior coatings, packaging inks, and industrial paints where UV stability is less critical. Its established manufacturing capacity in China and India also keeps pricing relatively stable, making it an economical choice for bulk industrial buyers.