PIGMENT RED 48:2/ HP RED 2598

C.I.NO.: PR48:2

Advantage: Good gloss, Low viscosity

Main Application Recommended: Solvent based inks

Product Description – PR48:2

HP Red 2598 (Pigment Red 48:2) is a calcium lake pigment. Widely used in gravure printing inks, especially NC-based packaging inks, it enhances viscosity in wWWWWWWWWater$1sed inks for smooth, consistent results. With high color strength, excellent dispersibility, and good solvent resistance (MEK rating 3-4), it is insoluble in water, non-flammable, and non-explosive. Ideal for offset, flexographic, and solvent-based inks, it delivers vivid colors for packaging, publications, and textiles.

Recommended Application：

Coatings: solvent based paints, wWWWWWWater$1sed paints, industrial coatings
Printing inks: offset inks, solvent 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 48:2

What are the key technical advantages of Pigment Red 48:2 (HP RED 2598) for solvent-based ink formulators?

Pigment Red 48:2 (CAS 7023-61-2) delivers two critical performance metrics for solvent-based ink systems: high gloss and low viscosity. As a calcium lake pigment with optimized particle morphology, it promotes superior surface smoothness in dried NC-based packaging ink films. This directly translates to gloss readings exceeding industry benchmarks for publication gravure. Its low viscosity characteristic further enables formulators to achieve higher pigment loads while maintaining press stability, a distinct advantage over other reds like PR48:1. For industrial coatings demanding both color strength and migration resistance, HP RED 2598 provides consistent dispersion with excellent MEK solvent resistance.

How does Pigment Red 48:2 perform specifically in NC-based gravure printing inks?

In nitrocellulose-based gravure inks, Pigment Red 48:2 (EINECS 230-303-4) enhances viscosity control and delivers smooth, streak-free results at high press speeds. The pigment’s chemical structure (C18H11ClN2O6SCa) provides strong compatibility with polyamide and PVB resin systems commonly used in flexible packaging formulations. Data confirms its ability to maintain stable rheology under shear, reducing the need for costly viscosity modifiers. For ink manufacturers targeting low-VOC solvent blends, PR48:2 offers exceptional color strength (typically 10-15% higher than PR48:1 in full-tone draws) without sacrificing gloss or flow.

Why is PR48:2 considered superior to PR48:1 for high-gloss solvent ink applications?

PR48:2 is chemically engineered as a calcium lake, whereas PR48:1 is a barium lake, which fundamentally alters particle surface characteristics. This difference results in PR48:2 achieving gloss readings 15-25 units higher (at 60° gloss meter) in solvent-based systems, particularly in NC-based packaging inks. The low viscosity of PR48:2 also allows formulators to reduce solvent load while maintaining film thickness, a critical factor for high-speed gravure. However, if maximum heat stability (>200°C) is required, formulators should note that PR48:2 is optimized for aesthetic performance rather than extreme thermal tolerance. For print finishes demanding both ‘wet look’ gloss and press efficiency, PR48:2 remains the industry standard.

Can Pigment Red 48:2 be used effectively in solvent-based industrial coatings?

Yes, HP RED 2598 (PR48:2) is recommended for solvent-based paints and industrial coatings requiring high color strength and good solvent resistance. Its calcium lake structure provides stable performance in alkyd and acrylic systems, while maintaining dispersion stability in tint bases. For formulators targeting gloss retention in automotive refinish or can coatings, PR48:2 offers consistent performance with MEK rub resistance exceeding 100 double rubs (ASTM D5402). Note that for exterior-grade applications requiring UV stability, PR48:2’s lightfastness is rated ‘Good’ but not ‘Excellent’, so it is best suited for interior or short-term outdoor exposure. The pigment’s density of 1.8-2.0 g/cm³ ensures efficient wetting in high-speed dispersion equipment.

What regulatory and quality considerations should procurement teams track for PR48:2 sourcing?

Procurement teams sourcing Pigment Red 48:2 (CAS 7023-61-2) should prioritize suppliers meeting ISO 9001 certification for batch-to-batch consistency. As a calcium lake pigment, PR48:2 avoids the barium and heavy-metal regulatory concerns now restricting PR48:1 in European packaging applications (e.g., EU Packaging Directive). Key specifications to verify include: fineness of grind (<10 μm Hegman), gloss rating (>85 at 60° for standard dispersion), and solvent resistance parameters (MEK double rubs). Pricing stability for PR48:2 is generally favorable compared to diarylide yellows due to established synthetic routes. For global buyers, ensure supplier maintains stock for rapid lead times — HONOR Pigment provides batch-specific COA showing CIELAB color values and viscosity data.