PIGMENT YELLOW 12/ HP YELLOW 1367

What Is PY12 / HP YELLOW 1367

CAS 6358-85-6, CI 21090, Disazo Diarylide. PY12 is a greenish-shade yellow of the disazo diarylide family, known as the most economical member in its class. This specific grade, HP YELLOW 1367, is engineered for plastics applications, offering high color strength and a clean, vibrant hue. While the base pigment is primarily used in offset and letterpress inks, this grade is specially formulated to overcome typical diarylide limitations in polymer systems, making it a reliable choice for cost-sensitive masterbatch and plastic coloring where strong tinting power and green-shade yellow are needed.

Why Choose HP YELLOW 1367

HP YELLOW 1367 is selected when a highly economical, greenish-yellow pigment is required for plastics without sacrificing color strength. Unlike its sibling grades, which are optimized for printing inks and lack solvent resistance, this grade is adapted for plastic compounding, offering better dispersion and thermal stability within the constraints of diarylide chemistry. It is the preferred choice for applications where cost efficiency is critical, such as in commodity plastics like PE and PP for toys, packaging, and household goods. When a bright, strong yellow is needed but the budget does not allow for higher-performance pigments like PY83 or PY110, HP YELLOW 1367 delivers solid value. It differs from standard PY12 by being processed to minimize thickening and to perform reliably in plastic melt systems, making it the go-to option for high-load, high-output plastic coloring where lightfastness 4-5 is acceptable.

Key Features

• Offers the most economical green-shade yellow option for plastic masterbatch, significantly reducing raw material costs without compromising color strength.
• Delivers high tinting strength in plastics, allowing for lower pigment loadings to achieve vivid yellow shades in PE and PP compounds.
• Exhibits good dispersion in plastic melts, reducing the risk of specks and ensuring uniform color distribution in injection molded parts.
• Provides lightfastness rating of 4-5, suitable for indoor plastic applications where prolonged sunlight exposure is not a primary concern.
• Maintains stability under typical plastic processing temperatures, enabling reliable use in extrusion and molding at moderate heat conditions.

C.I.NO.: PY12

Advantage:

Main Application Recommended: Plastics

Product Description – PY12

HP YELLOW 1367 (PIGMENT YELLOW 12) is medium shade yellow pigments, it has a certain tendency to migrates precludes ints used in plasticized PVC. it is recommended used for rapid PVC, polyurethane foam, aromatic polyurethanese applications.

Recommended Application

Plastics: PE, PVC, Rubber/TPV

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 PY12 / HP Yellow 1367 (CAS 6358-85-6, CI 21090)

Is PY12 specifically formulated for polyolefin plastics, or does it require adaptation?

HP Yellow 1367 is engineered with a surface treatment optimized for polyolefins like PP and PE. Unlike commodity PY12 grades, this variant undergoes controlled crystallisation and a special coating to reduce plate-out during injection molding and film extrusion. It achieves full colour strength at 0.1–0.5% loading without excessive warpage. Avoid using it in PVC or ABS without pre-testing, as the pigment’s hydrophobic surface may cause specking. For nylon, a carrier pre-dispersion is mandatory. The key takeaway: HP Yellow 1367 delivers drop-in performance in polyolefins, reducing costly reformulation.

What are the heat stability and lightfastness limits for HP Yellow 1367 in engineering plastics?

This grade withstands processing temperatures up to 260°C for short durations, making it unsuitable for high-melt nylons (PA66 above 280°C) or PEEK. Lightfastness reaches 6–7 on the Blue Wool scale in full-tone PP, dropping to 4–5 in pastel tints. Prolonged exposure above 240°C for 5 minutes causes a shift toward greenish-yellow (ΔE >3). For outdoor applications, a UV stabiliser package (e.g., HALS + benzotriazole) is non-negotiable. The takeaway: HP Yellow 1367 excels in moderate-temperature polyolefins and indoor goods, but fails in high-heat engineering resins.

How does HP Yellow 1367 compare to PY13 or PY83 in cost-performance for masterbatch?

PY12 (CI 21090) offers a 15–20% higher tinctorial strength than PY83 at similar cost, but its redder hue (dominant wavelength 583 nm vs. 577 nm for PY13) creates a narrower gamut. HP Yellow 1367 has lower oil absorption (40 g/100g) versus PY13 (55 g/100g), enabling higher pigment loading in masterbatch without viscosity spikes. However, PY13 resists blooming in LDPE better. For deep chrome-yellow requiring opacity, PY12 wins; for transparent greenish shades, choose PY13. The takeaway: HP Yellow 1367 is the opacifying workhorse, not a direct swap for green-shade pigments.

Does HP Yellow 1367 require special dispersion techniques to prevent agglomerates?

Yes. Standard knife-milling or single-screw extrusion often leaves 50‑micron aggregates visible in thin films. Use a co-rotating twin-screw extruder with a high-shear mixing zone at 180–200°C, preferably with a stearate or EVA-based dispersant at 3–5% by pigment weight. For fluid masterbatch, a three-roll mill is recommended. Avoid water-cooled strands; shot formation from moisture can cause nozzle blockage. The takeaway: HP Yellow 1367 demands shear-intensive compounding—never dry-blend directly into injection moulding hoppers.

What is the recommended shelf life and potential substitution strategies if HP Yellow 1367 is discontinued?

Store below 30°C in sealed HDPE containers; moisture absorption above 1.5% triggers caking and dispersion failure. Shelf life is 36 months from manufacture under those conditions. As a direct replacement, consider Colour Index Pigment Yellow 17 (CI 21105) if a slightly greener shade is acceptable, or switch to a bismuth vanadate (PY184) for six-fold UV resistance—though cost triples. Avoid solvent-based cleaners; HP Yellow 1367 is insoluble and leaves sticky residues in extruders. The takeaway: HP Yellow 1367 has no perfect substitute; stock adequate inventory per forecast to avoid retooling.

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