PIGMENT BROWN 24/ HP BROWN 7682
in achieving a bright brown color combined with ex
Technical Information
What Is PBr24 / HP BROWN 7682
PBr24 / HP BROWN 7682 is an organic pigment with CAS number 4948-15-6 and CI 77310, classified as an organic pigment type. This specific grade is known for its rich, vibrant brown hue, derived from complex organic molecules rather than inorganic compounds. It offers excellent dispersion and stability in various binder systems, making it a versatile choice for modern coloring applications. The pigment’s molecular structure ensures consistent performance across different processing conditions, from high-temperature molding to solvent-based formulations. Its organic nature provides unique coloristic properties that distinguish it from traditional inorganic brown pigments.
Why Choose HP BROWN 7682
HP BROWN 7682 is the preferred grade when brightness and fastness are critical. This pigment delivers a vivid, clean brown shade that outperforms standard inorganic browns in both color strength and transparency, making it ideal for high-end plastics and coatings where visual impact matters. Its excellent fastness properties include lightfastness, weather resistance, and chemical stability, ensuring long-lasting color retention in outdoor or harsh environments. In plastics, it maintains color integrity during injection molding and extrusion, while in coatings, it provides uniform coverage without streaking. There are no sibling grades for this product, meaning HP BROWN 7682 stands alone as the optimal choice for applications requiring both brilliance and durability. When color consistency and performance reliability are non-negotiable, this grade delivers unmatched results.
Key Features
- HP BROWN 7682 exhibits excellent lightfastness and weather resistance, ensuring color stability under prolonged UV exposure.
- This organic pigment provides high color strength and transparency, allowing for vibrant, deep brown shades with minimal loading.
- It demonstrates outstanding heat stability, maintaining color integrity during high-temperature plastic processing up to 280°C.
- The pigment offers superior chemical resistance, withstanding acids, alkalis, and solvents without fading or bleeding.
- HP BROWN 7682 is fully dispersible in both polar and non-polar binder systems, enabling uniform application in plastics and coatings.
What Is PBr24 / HP BROWN 7682
PBr24 / HP BROWN 7682 is an organic pigment with no assigned CAS or CI number, classified as a Type: Organic Pigment. This specific grade, also known as HP BROWN 7682, is a high-performance brown pigment that belongs to the PBr24 organic pigment family. It is characterized by its bright, clean brown shade and excellent all-around fastness properties, making it highly suitable for demanding industrial applications where color stability and durability are critical.
Why Choose HP BROWN 7682
HP BROWN 7682 is the preferred choice when a bright, reddish-brown color with superior lightfastness and weather resistance is required in plastics and coatings. Unlike many conventional brown pigments that appear dull or muddy, this grade delivers a vivid, clean hue that enhances product aesthetics. Its excellent fastness ensures minimal color shift during high-temperature processing in plastics and long-term outdoor exposure in coatings. When compared to alternative brown pigments (such as iron oxides or mixed metal oxides), HP BROWN 7682 offers a lower density and higher tinting strength, reducing overall pigment loading. There are no sibling grades available, meaning HP BROWN 7682 stands as a unique, optimized formulation—there is no better or worse version within the manufacturer’s portfolio. This single-grade status simplifies selection: if you need a bright organic brown for plastics or coatings with outstanding fastness, HP BROWN 7682 is the direct, uncompromising solution.
Key Features
- Delivers a bright, clean brown shade that is visually distinct from conventional dull brown pigments.
- Exhibits excellent lightfastness and weather resistance, ensuring long-term color retention in exterior coatings and plastic products.
- Provides high tinting strength and transparency, allowing efficient color formulation with minimal pigment usage.
- Maintains stable color performance under high-temperature plastic processing conditions, resisting thermal degradation.
- Offers broad compatibility with both polar and non-polar resin systems used in plastics and solvent-based or water-based coatings.
What Is PBr24 / HP BROWN 7682
PBr24 / HP BROWN 7682 is an organic pigment with no assigned CAS or CI number, classified under the organic pigment type. It is a high-performance brown shade derived from a complex organic structure, known for its bright, warm tone and strong hiding power. This pigment is widely used in industrial applications where durability and color consistency are critical. Its chemical stability allows it to perform reliably in various demanding environments, making it a staple in modern color formulation.
Why Choose HP BROWN 7682
The specific HP BROWN 7682 grade offers a distinct advantage in achieving a bright brown color combined with excellent overall fastness properties, including lightfastness and weather resistance. Formulated specifically for plastics and coatings, it disperses easily in polymer and solvent systems, reducing processing time. Compared to its inorganic brown siblings, such as iron oxide, HP BROWN 7682 delivers a more vivid, cleaner hue and higher tinting strength, allowing for smaller dosages. When compared to other organic brown pigments, this grade typically shows superior heat stability and migration resistance, crucial for injection-molded plastics and automotive coatings. It maintains its color integrity under prolonged UV exposure, making it ideal for exterior applications where fading is a concern.
Key Features
- HP BROWN 7682 provides a bright brown color that is significantly cleaner and more vibrant than standard inorganic brown pigments.
- This pigment exhibits excellent lightfastness and weather resistance, ensuring long-term color retention in outdoor coatings.
- It offers high heat stability, making it suitable for high-temperature plastic processing without color shift or degradation.
- The product demonstrates strong migration resistance, preventing bleeding or blooming in plastic and coating systems.
- HP BROWN 7682 delivers high tinting strength, enabling cost-effective formulations with minimal pigment loading.
C.I.NO.: PBr24
Advantage: Bright color, excellent fastness
Main Application Recommended: Plastics, Coatings
Product Description – PBr24
Titanium chrome brown (PIGMENT BROWN 24) is a high- temperature calcined red and yellow pigment that is easily dispersed, has good hiding power, excellent light resistance, weather resistance, heat resistance, chemical resistance, and is free of color bleeding and migration. It has the advantages of high coverage, strong red light, and high brightness.
Recommended Application
Coatings: solvent based paints, water based paints, auto paints, industrial coatings, powder coatings, wood coatings, coil coatings
Plastics: PE, PP, PBT, PVC, PET, EVA, ABS
Technical Data
| Product Information | ||||
|---|---|---|---|---|
| Chemical Type | Cr-Sb-Ti-O | CAS NO. | 68186-90-3 | |
| C. I. Name | Pigment Brown 24 | EINECS / ELINCS NO. | 269-052-1 | |
| C. I. Constitution No. | 77310 | Chemical Formula | ||
| Technical Performance | ||||
|---|---|---|---|---|
| Full Shade | Tint | |||
| Full Shade | Tint | |||
| Weather Resistance | 4-5 | 3 | Heat Stability °C | ＜ 800°C |
| Light Fastness | 8 | 7 | ||
| Physical Properties | ||||
|---|---|---|---|---|
| Physical Form | Powder | Primary particle size D50 ( μm) | ~1.5 | |
| Density (g/cm2 ) | ~4.4 | Acid resistance | 5 | |
| Oil absorption ( g/100 g) | 15-25 | Alkali resistance | 5 | |
| Water soluble matter ( % ) | ≤ 0.5 | Light fastness | 8 | |
| Moisture (%) | ＜ 1.0 | Weatherfastness | 5 | |
| PH | 7–9 | |||
| Sieve residue on 45 microns (%) | ＜ 0.5 | |||
| Packaging | ||||
|---|---|---|---|---|
| 25kgs/bag 1000kgs/Pallet ; | ||||
| Storage Shelf Life 5 years | ||||
| Should be stored in cool, dry and ventilate place. |
| TRANSPORTATION | ||||
|---|---|---|---|---|
| Avoid inversion, sunlight, moisture and crash. Avoid damage the package. |
- 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”
Technical Note — The data and recommendations provided are based on HONOR Pigment’s internal testing and manufacturing experience. They are offered in good faith to assist customers in evaluating product suitability for their specific applications. As processing conditions, formulations, and end-use requirements vary widely, customers should conduct their own validation under actual use conditions. HONOR Pigment makes no warranties, express or implied, regarding the accuracy of this information or its fitness for any particular purpose. Nothing herein shall be construed as a license or recommendation to infringe any patent. HONOR Pigment’s standard terms and conditions of sale apply.oduct contains particles < 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.
Why Choose Honor Pigments?
- 🌍 Global Export Expertise — Trusted by customers in 40+ countries for consistent quality and reliable supply
- ✅ Strict Quality Control — ISO 9001 certified with batch-to-batch consistency and zero-defect policy
- 💰 OEM Production Advantage — Competitive pricing without compromising pigment performance
- 🧪 Technical Support — Free color matching, formulation advice and sample testing before bulk order
Frequently Asked Questions About PBr24
What exactly is PBr24 and what are its CAS and CI numbers for plastics and coatings?
PBr24, commercially known as HP Brown 7682, is a high-performance organic pigment classified under Colour Index Pigment Brown 24 (CI 77310). Its CAS number is 68186-90-9, and it is a complex inorganic colorant (CICP) based on a chrome-antimony-titanate rutile structure. In plastics and coatings, it delivers a warm, reddish-brown shade with exceptional opacity. Unlike many organic browns, this pigment offers outstanding lightfastness and weather resistance, making it ideal for exterior applications such as automotive coatings, architectural paints, and outdoor plastic products like PVC profiles or garden furniture.
What are the performance limits of HP Brown 7682 in high-temperature plastics?
HP Brown 7682 demonstrates excellent thermal stability up to approximately 260°C (500°F), making it suitable for most engineering plastics like ABS, polycarbonate, and nylon. However, in very high-temperature resins such as PEEK or LCP (above 300°C), slight color shift or degradation may occur during extended processing. Its migration resistance is excellent, with no bleeding in plasticized PVC or rubber. The pigment is also chemically inert, but strong reducing environments (e.g., certain polyolefin antioxidants) can trigger a slight dulling of the reddish tone. Always conduct a lab trial for your specific resin system to confirm stability at peak processing temperatures.
How does HP Brown 7682 compare to Pigment Brown 24 from other manufacturers or to “sibling” browns like PBr29?
HP Brown 7682 is chemically identical to other CI PBr24 pigments globally, but its key differentiation is a narrower particle size distribution and higher purity, which translates to superior color strength and gloss in coatings. Compared to Pigment Brown 29 (PBr29, iron-chrome oxide), HP Brown 7682 offers a noticeably warmer, more reddish-brown hue versus the cooler, yellowish-brown of PBr29. PBr24 also provides better opacity and tinting strength than PBr29, though PBr29 may be slightly more cost-effective for high-temperature ceramics. In plastics, HP Brown 7682 yields cleaner, brighter shades, while PBr29 tends to be more dull. For vivid browns, HP Brown 7682 is preferred.
What processing precautions are necessary when using HP Brown 7682 in masterbatch production?
When compounding HP Brown 7682 into masterbatch for plastics, ensure the pigment is fully dispersed to avoid agglomerates that cause streaking. It is a relatively hard oxide, so use high-shear mixing (e.g., twin-screw extruder) with a compatible carrier wax, such as polyethylene or EVA. Avoid acidic co-additives (e.g., stearic acid in excess), as they can interact with the pigment’s surface coating and reduce colorfastness. For coatings, bead milling is recommended to achieve a fineness of grind below 15 microns. The pigment is heavy (specific gravity > 4.0), so maintain adequate screw speed to prevent settling in the hopper. Pre-drying the resin is not mandatory unless the pigment is used in moisture-sensitive polymers like polyesters.
Can HP Brown 7682 be stored long-term, and can it substitute other brown pigments like PBr7 or PBr6?
Yes, HP Brown 7682 has indefinite shelf life when stored in a cool, dry, sealed container away from direct sunlight, as it is chemically stable and non-hygroscopic. As a substitute for organic browns like PBr7 (iron oxide) or PBr6 (azo), it offers vastly superior heat stability and UV resistance, but note that it is significantly more opaque and has a different undertone (redder, less yellow). It can replace PBr7 in applications requiring weatherability (e.g., outdoor siding), but will increase cost. It cannot replace PBr6 in transparent or high-tint applications because of its opacity. Always test for color match—HP Brown 7682’s high hiding power may require reformulation with extenders to achieve the desired shade.
Takeaway: HP Brown 7682 is the go-to high-performance brown for demanding plastics and coatings applications requiring unmatched durability, thermal resistance, and a warm reddish hue.