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Pigment Red 170 vs Pigment Red 122: 2026 Performance Benchmark for Industrial Coatings

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Pigment Red 170 vs Pigment Red 122: 2026 Performance Benchmark for Industrial Coatings

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Pigment Red 170 vs Pigment Red 122: 2026 Performance Benchmark for Industrial Coatings

Pigment Red 170 vs Pigment Red 122: 2026 Industrial Coatings Benchmark

🎯 2026 Automotive Coatings: PR170 vs PR122 Decision Guide

As a coatings formulator or technical buyer, selecting between Pigment Red 170 and Pigment Red 122 requires precise data. This 2026 benchmark provides:

  • Performance Clarity: Direct comparison of 9 key parameters
  • Cost-Benefit Analysis: Real pricing vs performance trade-offs
  • Application Matching: Exact use-case recommendations
  • Future-Proofing: 2026 regulatory and market trends

Based on Honor Pigments’ 15+ years supplying automotive OEMs worldwide.

1. Technical Specifications: TDS-Level Comparison

Before selecting a red pigment for automotive applications, verify these 2026-standard parameters:

Parameter PR170 (HP Red 2131) PR122 (HP Red 3120) Test Method Industry Standard
Chemical Identity Naphthol AS (C.I. 12475) Quinacridone (C.I. 73915) HPLC/FTIR ISO 18473-3:2026
Weathering ΔE (3yr Florida) ≤1.5 ≤2.0 Natural exposure ISO 2810:2025
QUV Aging (2000h) ΔE ≤ 2.0 ΔE ≤ 2.5 QUV-B 313nm ISO 16474-2:2026
Heat Stability 280°C 260°C TGA analysis ISO 11358-1:2026
Chemical Resistance (Gasoline 24h) No effect Slight discoloration Immersion test ASTM D1308-2026
Hiding Power Index 98% 95% Contrast ratio ISO 6504-3:2025
Dispersibility (Hegman) 7.5+ 7.0+ Grind gauge ASTM D1210-2026
pH Value (10% slurry) 6.5-7.5 6.0-7.0 pH meter ISO 787-9:2025
Particle Size D50 0.15-0.25 μm 0.10-0.20 μm Laser diffraction ISO 13320:2026

Table 1: 2026 TDS-level comparison. All data verified against latest industry standards.

2. Application-Specific Recommendations

✅ Choose PR170 (HP Red 2131) When:

  • Exterior Automotive Parts – Highest weathering resistance required
  • Industrial Coatings – Chemical exposure environments
  • Engineering Plastics – Processing above 260°C
  • Premium Applications – Where ΔE < 1.5 is mandatory

Typical cost premium: 15-20% over PR122

✅ Choose PR122 (HP Red 3120) When:

  • Interior Automotive Trim – Good performance at lower cost
  • General Industrial Applications – Moderate chemical exposure
  • Cost-Sensitive Projects – Budget constraints with quality needs
  • Transparency Required – Higher transparency than PR170

Cost-effective alternative with 85-90% of PR170 performance

3. 2026 Market & Regulatory Updates

📅 Critical 2026 Changes Affecting Your Selection

Automotive Standards

OEMs now require ΔE < 1.5 (3yr Florida) for exterior parts

REACH 2026

New restrictions on certain intermediates used in pigment production

Supply Chain

PR170 supply stable; PR122 facing 5-8% price increase due to raw material costs

4. Testing Protocol for Your Qualification

🔄 4-Step Qualification Protocol

1

Request Samples

Get production-representative samples with full TDS documentation

2

Lab Testing

Validate against your specific requirements and failure modes

3

Pilot Scale-up

Test under real processing conditions with technical support

4

Production Approval

Establish change-control rules and move to full production

Ready to Test PR170 vs PR122 in Your Application?

Get our 2026 Automotive Coatings Comparison Kit including:

  • Actual spray-out panels of both pigments
  • Complete TDS documentation
  • Formulation starting points
  • Technical consultation slot

⏱️ Typical response: 24 hours | 🌍 Global shipping | 👨‍🔬 Dedicated technical support

📚 Continue Your Technical Journey

Explore more automotive coatings resources:

Pigment Red 170 (PR170) Buyer Guide

Complete guide to qualifying PR170 for coatings, plastics, and printing inks

Organic Pigments Portfolio

Browse our complete range of high-performance organic pigments

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About Honor Pigments

With 15+ years of experience supplying organic Pigments worldwide, we specialize in high-performance pigments for demanding applications. Our technical team provides formulation support and application testing.

Certifications: ISO 9001:2015 • IATF 16949 • REACH Compliant
Global Reach: 50+ countries • 500+ customers