PV23 vs PV19 Comparison Guide

PV23 vs PV19 Comparison Guide

PV23 Loses 50% of Its Chroma After 1,000 Hours of QUV-B Exposure. PV19 Loses 3%. That One Data Point Determines Whether Your Violet Coating Still Looks Violet at Year 3.

You are a procurement manager at a packaging inks company. Your client, a luxury cosmetics brand, demands a violet shade that survives 2,000 hours of Xenon arc testing without fading. You have two candidates: PV23 (Dioxazine Violet) at approximately USD 28/kg (based on recent market estimates from multiple suppliers), and PV19 (Quinacridone Violet) at approximately USD 62/kg (based on HONOR Pigment pricing). The price difference is 2.2x. But if PV23 fails after 1,000 hours, the total cost of reformulation, re-testing, and client compensation could exceed USD 50,000. Which one do you choose?

This guide compares PV23 and PV19 across five critical dimensions: weatherability, chemical resistance, color strength, dispersion cost, and application suitability. Every data point includes a purchasing decision implication.

Technical Comparison

1. Chemical Structure & Crystal Morphology

What this means for your purchasing decision: PV19’s smaller, needle-like particles provide higher surface area for light scattering. This translates to 15–20% stronger color at the same pigment load (according to industry literature). For a PVC coating, using PV19 reduces pigment content from 5% to 4%, saving USD 0.31/kg in raw material cost—but the higher per-kg price of PV19 still makes PV23 cheaper per kilogram of dry pigment. Balance this against the lower application weight.

2. Weatherability & Lightfastness

What this means for your purchasing decision: PV23 is unsuitable for any coating exposed to direct sunlight beyond 12 months—automotive exterior, architectural coatings, or outdoor signage. PV19 passes the 3,000-hour Xenon arc threshold required by automotive OEMs (e.g., Ford WSS-M2P186-C1). If your application sees UV, PV19 is the only viable choice. The price premium of USD 34/kg is offset by zero warranty claims—each claim typically costs USD 10,000–30,000 for repainting.

3. Chemical Resistance

What this means for your purchasing decision: For food packaging or children’s toys, bleeding into plasticizers is a regulatory risk. PV19 passes EN71-3 migration limits; PV23 fails in some plasticizer-rich formulations. If your coating contacts polyolefin or PVC substrates, PV19 eliminates the need for secondary barrier coatings—saving USD 0.15–0.25/kg in total system cost.

4. Dispersion & Processing Cost

• PV23: Plate-like particles require 1.5–2.0x more dispersant than PV19 (based on formulator feedback). Typical dispersant load: 8–12% of pigment weight. Additional pass-through in bead mill: 2–3 passes versus 1–2 passes for PV19.
• PV19: Needle-like morphology wets out faster. Required dispersant: 5–7% of pigment weight. Expected milling time reduction: 20–30% (estimated from equipment trials).

What this means for your purchasing decision: At a production batch of 1,000 kg of pigment paste, PV23 requires approximately USD 150–200 more in dispersant cost per batch (at USD 12/kg dispersant). Over 50 batches per year, that is USD 7,500–10,000 annual savings using PV19—assuming the same formula volume. The milling time reduction also cuts energy cost by roughly 15–20%.

5. Bio-based & Certification Status

• PV23: No known bio-based content. Complies with RoHS (EU 2015/863) and EN71-3 (toy safety). No FDA food contact approval.
• PV19: Some suppliers (e.g., BASF) offer bio-based versions with up to 30% renewable carbon content. Complies with RoHS, EN71-3, and FDA 21 CFR 175.300 for indirect food contact (coatings).

What this means for your purchasing decision: If your customer demands a “natural” or “bio-based” label, PV19 offers a clear path. PV23 cannot claim this. For food packaging coatings, PV19’s FDA approval is mandatory—PV23 would require a costly extraction study (typically USD 5,000–12,000 per formulation).

Application Guide

Pricing Strategy

Prices are approximate and vary by region, order volume, and crystal form.

Key insight: At year 3, PV19 becomes cheaper per effective service year. For any coating with a 5+ year lifetime requirement, PV19 is the lower total-cost option. If your coating is indoor-only with less than 2-year exposure, PV23 wins on upfront cost.

Frequently Asked Questions

Q: Can I blend PV23 with PV19 to reduce cost without sacrificing weatherability?

Yes—up to 20% PV23 in the mix with PV19 (beta) yields a dE of 2.6 after 2,000 hours Xenon arc (based on blended pigment testing by HONOR Pigment). That still falls within most automotive interior specifications (dE < 3). Cost saving: approximately USD 9–12/kg blend versus pure PV19.

Q: Does PV23 meet RoHS or EN71-3 for toys?

PV23 passes RoHS (lead, cadmium, mercury, hexavalent chromium, PBBs, and PBDEs) and EN71-3 (migration limits for 19 elements) when supplied in standard purity. However, some low-cost grades from non-certified suppliers may fail EN71-3 antimony and arsenic limits—always request a third-party test report (ICP-MS). PV19 easily passes both with typical migration rates < 0.1 ppm for all metals.

Q: Which pigment is better for high-gloss coatings (60° gloss > 90)?

PV19, because its smaller particle size (0.03–0.08 μm) produces less light scatter. PV23 at 0.05–0.10 μm achieves maximum gloss of 85–88. PV19 can reach 93–95 gloss units in a polyester melamine system (based on HONOR Pigment application data).

Q: How do I test batch-to-batch consistency between PV19 from different suppliers?

Request a “Reduced Liability Batch (RLB)” test from HONOR Pigment—we compare the incoming batch against a reference standard using spectrophotometry (CIE L*a*b*), particle size (laser diffraction), and heat stability (TGA up to 280°C). The RLB test costs USD 250 and identifies any crystal form shift (e.g., beta to gamma) that would alter color shade.

Ready to Reduce Your Violet Pigment Liability?

Stop guessing which violet pigment will fail at year 2. HONOR Pigment offers free RLB testing on first orders of PV19 or PV23—we validate the batch against your formula’s exact specifications. Request a quote today, or ask for a technical datasheet with full QUV, Xenon arc, and chemical resistance data.

Contact HONOR Pigment: sales@honorpigment.com | +86-571-8735-6773

All prices and test results are approximate and based on standard industry grades. Actual performance may vary with formulation and application conditions. Proper validation testing is recommended for each end-use.