Heat-stable organic pigments validated to 200-220°C for PVC pipe, profile, sheet, and conduit applications.
Discuss Your ApplicationPVC pipe, profile, sheet, and conduit processed at 180-220°C requires pigments that don't decompose under PVC's thermal load and don't interact with PVC's stabilizer system. Wrong pigment selection causes streaks, color drift across the run, or interference with the lead/tin/calcium-zinc stabilizer chemistry.
PVC-grade pigments must combine three properties: heat stability ≥220°C for safety margin above PVC's processing range; plasticizer-bleed resistance for plasticized PVC formulations; and compatibility with PVC stabilizer systems (calcium-zinc, organotin, or lead).
Recommended grades for PVC pipe and profile: PY154 (benzimidazolone yellow), PY83 (diarylide HR yellow), PR122 (quinacridone red), PR254 (DPP red), PR48:1 and PR48:2 for bright reds in non-bleed applications, PB15:1 (alpha phthalocyanine blue) for warm blue shade in PVC, PB15:3 for greenish-blue, and PG7 for green. Iron oxide blends are typical for brown pipe applications.
All grades are RoHS compliant (no lead, cadmium, mercury, or hexavalent chromium) and meet REACH requirements for the 24 banned aromatic amines. For potable-water PVC pipe, we provide grade-specific NSF or food-contact compliance documentation on request.
PVC pipe extrusion typically processes at 180-200°C; rigid PVC profile up to 210°C. Pigments rated to 220°C or higher provide adequate safety margin. Standard heat-stable grades: PY154, PY83, PR122, PR254, PB15:1, PB15:3, PG7. Avoid azo pigments rated below 200°C as they will decompose during extended processing.
Yes. All Kanani PVC-grade organic pigments are 100% lead-free, cadmium-free, and RoHS compliant with no detectable heavy metals above threshold limits. Compliance certificates ship with every consignment. We do not manufacture lead chromate or cadmium-based inorganic pigments.
Plasticized PVC (used for hoses, cable insulation, flooring) needs bleed-resistant grades: PY154 (benzimidazolone), PR122 (quinacridone), PR254 (DPP), PB15:3, PG7, and PG36. Avoid soluble dyes and untreated azo pigments which can migrate into the plasticizer phase and bleed through to adjacent surfaces.
Share your binder system, processing temperature, and required performance — our technical sales team will recommend the right grade and ship a free 50-100g sample for qualification.
