PIGMENT RED 22/ HP RED 2442

C.I.NO.: PR22

Advantage:

Main Application Recommended: Water based inks

Product Description – PR22

HP RED 2442 (PIGMENT RED 22) affords yellowish shades of red. Its main market is in textile printing, but it is also used throughout the graphics field, such as in offset and gravure printing.

Recommended Application：

Coatings: water based coatings

Printing inks: offset 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 — This Technical Data Sheet reflects our best understanding of typical product properties at the time of publication. Listed values are representative of standard production and are not intended as specifications, contractual parameters, or fitness guarantees. Batch variations within normal manufacturing tolerances may occur; users should verify critical parameters against their own requirements before use. Processing methods, formulations, and end-use environments are beyond the manufacturer’s control. The buyer assumes full responsibility for confirming product suitability through its own testing and quality assurance. No intellectual property license is granted or implied. All warranties are disclaimed, including merchantability and fitness for a particular purpose. The manufacturer is not liable for incidental, consequential, or special damages. All sales are governed by the manufacturer’s standard terms, available upon request. This product may contain particles below 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 22

What specific application advantages does HP RED 2442 (Pigment Red 22) offer for water-based inks?

Pigment Red 22 (HP RED 2442) is specifically recommended for water-based inks, delivering a yellowish shade of red with reliable performance. As a Naphthol AS type pigment (C.I. 12315), it disperses readily in water-based acrylic and polyurethane binder systems, making it ideal for textile printing and graphics applications. Its good alkali resistance (grade 4) and acid resistance ensure stable color development in aqueous systems, while the 4.0 g/cm³ density supports consistent ink formulation. For formulators targeting high-quality water-based coatings or offset inks, PR22 provides a clean, warm red with suitable heat stability (up to 160°C) for most indoor printing requirements.

How does Pigment Red 22 maintain color consistency in offset printing applications?

HP RED 2442 (Pigment Red 22) is engineered for offset printing inks, where its specific surface area of 35 m²/g and 4.0 g/cm³ density contribute to predictable rheology and color strength. The Naphthol AS chemistry provides a yellowish red shade with good light fastness (grade 6) and weather resistance (grade 4) suitable for indoor use. In offset formulations, PR22 delivers stable dispersion and reliable printing results, with the pigment’s particle size distribution optimized for efficient wetting in oil-based vehicles. This makes it a cost-effective choice for high-volume printing where batch-to-batch consistency is critical.

What are the key performance parameters of PR22 in textile printing compared to other red pigments?

Pigment Red 22 (HP RED 2442) is a primary choice for textile printing, offering a yellowish red hue with good fastness properties. Its main advantages include strong compatibility with water-based binder systems (alkali resistance grade 4) and reliable heat stability up to 160°C. Compared to PR112, PR22 provides a warmer, more orange-leaning red, making it ideal for fashion textiles requiring vibrant yet stable colors. The specific density of 4.0 g/cm³ and specific surface area of 35 m²/g ensure efficient pigment loading and consistent print quality, while the Naphthol AS structure guarantees durability in standard laundering conditions.

Is HP RED 2442 (PR22) suitable for combining with organic pigments in mixed shade formulations?

Yes, HP RED 2442 is highly suitable for mixed shade formulations due to its clean, yellowish red shade (CI: 12315) and excellent compatibility with other organic pigments. As a Naphthol AS pigment, it offers good transparency and tinting strength when combined with yellows or oranges to create warm red or coral shades. The pigment’s light fastness (grade 6) and weather resistance (grade 4) ensure color stability in blends, while its alkali resistance (grade 4) allows formulation in various binder systems. For water-based or offset ink systems, PR22’s physical properties (density 4.0 g/cm³, specific surface 35 m²/g) facilitate predictable color matching and consistent dispersion.

What standard quality parameters should buyers verify for PR22 from Chinese manufacturers?

For PR22 (HP RED 2442) sourced from Asian suppliers, key parameters to verify include the EINECS number (226-109-5), chemical formula, and Naphthol AS classification (C.I. 12315). Critical performance data include heat stability (160°C), light fastness (grade 6), weather resistance (grade 4), and alkali/acid resistance (both grade 4). Physical properties such as specific density (4.0 g/cm³) and specific surface area (35 m²/g) should match technical datasheets. Ensure the pigment meets specification for water-based and offset ink applications, with full transparency on manufacturing processes and batch consistency reports.