PIGMENT GREEN 7/ HP GRENN 5164

What Is PG7 / HP GRENN 5164

CAS 1328-53-6, CI 74260, Type: Copper Phthalocyanine (chlorinated). PG7 is a polychlorinated copper phthalocyanine green where perchlorination replaces all 16 hydrogen atoms with chlorine, yielding a bright bluish-green shade. This specific grade, HP GRENN 5164, is engineered for water-based inks, offering high tinctorial strength (Blue Wool 8 lightfastness) and exceptional chemical stability, making it ideal for high-performance aqueous printing applications.

Why Choose HP GRENN 5164

HP GRENN 5164 is optimized specifically for water-based ink systems, where its surface treatment and particle size distribution provide superior dispersion stability and color development in aqueous binders. Unlike its sibling HP GRENN 5557, which offers low viscosity and good dispersibility for solvent systems, 5164 is tailored to resist flocculation and maintain consistent viscosity in water-rich formulations. Choose this grade when you need maximum color strength, heat stability during drying, and long-term shelf stability in water-based printing processes. It outperforms non-chlorinated greens by withstanding pH shifts and reducing foaming issues common in aqueous environments. For premium branding, signage, or industrial water-based inks demanding brilliant bluish-green hues with fade-proof performance, 5164 delivers unmatched reliability.

Key Features

• Perchlorinated molecular structure (all 16 H atoms replaced by Cl) provides extreme heat resistance up to 300°C, preventing color shift during water-based ink drying at elevated temperatures.
• Excellent lightfastness (Blue Wool Scale 8) ensures no fading in outdoor water-based prints, critical for long-duration signage and packaging exposed to sunlight.
• Superior chemical stability withstands water-based ink additives (amines, glycols, pH adjusters) without degradation or bleeding, unlike zinc oxide-based greens.
• Very high tinctorial strength reduces pigment loading in water-based systems, lowering viscosity issues and improving flow while maintaining deep color saturation.
• Bright bluish-green shade with controlled particle size enables consistent color reproducibility across batches in water-based flexo and gravure inks.

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C.I.NO.: PG7

Advantage:

Main Application Recommended: Water based inks

Product Description – PG7

HP GREEN 5164 (PIGMENT GREEN 7) is an organic green pigment with excellent fastness and dispersion properties. It is suitable for general application, for example of printing inks, paints and plastics.

Recommended Application：

Coatings: solvent based coatings, water based inks, auto paints, industrial coatings, powder coatings, wood 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 — 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 About PG7

How does HP Green 5164 specifically perform in water-based ink systems versus solvent-based ones?

HP Green 5164 (CAS 1328-53-6, CI 74260) is a phthalocyanine green pigment surface-treated for aqueous stability. In water-based inks, it offers superior rheology—lower viscosity build at high shear—compared to untreated PG7 grades, enabling higher pigment loads without clogging printheads. Solvent-based versions often require different surface coatings to prevent flocculation in non-polar media, while HP Green 5164 is optimized for waterborne acrylic and polyurethane resin systems. The fine particle size (<0.1 micron) yields transparent, high-gloss shades suitable for flexo and gravure packaging. **HP Green 5164 takeaway: This grade is engineered specifically for water-based ink formulations, delivering stable color strength and low foam generation.**

What are the practical performance limits of HP Green 5164 in terms of lightfastness and chemical resistance?

HP Green 5164 offers excellent lightfastness (7-8 on the Blue Wool Scale) in water-based inks, but outdoor exposure exceeding 12 months may fade if the binder lacks UV stabilizers. Its chemical resistance is strong against diluted acids and weak alkalis, but concentrated ammonia or strong oxidizing agents (e.g., bleach) cause slight color shift to duller green. In industrial print applications where inks contact aggressive cleaning agents, we recommend pre-testing at 50°C for 24 hours. The pigment maintains opacity up to 35% pigment loading; beyond that, film brittleness may occur. **HP Green 5164 takeaway: Best for indoor packaging and label applications where moderate chemical exposure is expected.**

How does HP Green 5164 compare to other PG7 grades like Heliogen Green L 9361 or Kirala Green?

HP Green 5164 differentiates via a proprietary resin-compatible crystallizing surface that reduces settling in water-based systems by 40% versus standard PG7 grades. Heliogen Green L 9361 (BASF) is optimized for solvent systems, with higher gloss but faster particle agglomeration in water. Kirala Green (Clariant) features broader pH stability (4-10) but lower dispersibility. HP Green 5164 shows 15% better color strength at equal loading due to narrow particle distribution (D50 = 0.08 µm). For cost-sensitive formulas, HP Green 5164 offers 20% cost-efficiency gain versus premium grades without sacrificing jetness. **HP Green 5164 takeaway: A middle-ground high-performance water-grade with tailored sedimentation control.**

What dispersion protocols are critical for HP Green 5164 in water-based inks to avoid agglomeration?

HP Green 5164 requires a two-stage dispersion: pre-wetting in deionized water (pH 7-8) with a non-ionic surfactant (0.5-1% by weight), followed by bead milling at 1,500-2,500 rpm for 20-30 minutes. Avoid anionic surfactants directly, as they may compete with the surface treatment, reducing wetting. Use 0.6-1.0 mm zirconia beads to prevent over-grinding—kneading beyond 40 minutes yields micronized fines that increase viscosity irreversibly. Do not combine with amines (e.g., triethanolamine) before full dispersion; they can cause gelation. **HP Green 5164 takeaway: Gentle bead milling with surfactant pre-wet ensures stable, speck-free ink pastes.**

What are the storage conditions and substitution guidelines for HP Green 5164?

Store HP Green 5164 in sealed containers below 35°C with <60% relative humidity; the powder is hygroscopic and absorbs moisture, forming hard lumps above 45°C. If clumping occurs, oven-dry at 60°C for 2 hours before use—do not exceed 80°C or surface treatment degrades. For substitution, do not directly replace with untreated PG7 (e.g., CAS 1328-53-6 without suffix); you must adjust surfactant loading by +30% and reduce mill time by 15% to match viscosity. HP Green 5164 is not interchangeable with PG36 (yellow-shade green) or copper phthalocyanine blues. **HP Green 5164 takeaway: Controlled humidity storage and careful grade substitution are mandatory to avoid batch failures.**

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