Pigment Red
颜料红 57:1（星红 57:1）
Pigment Red 57:1 (CAS 6865-60-7, C.I. 15850:1) is a Monoazo organic pigment — the calcium lake of the 2B-acid series — delivering a bluish red shade with high color strength and excellent transparency. It offers superior lightfastness (6–7) compared to other Lithol Rubine variants, making it suitable for demanding applications in water-based inks, textile printing, automotive interior coatings, and high-performance plastic coloration. Outstanding dispersibility and batch consistency.
Key Information
技术规格
产品概览
Pigment Red 57:1 is a Monoazo organic pigment representing the calcium lake variant of the 2B-acid (Lithol Rubine) family. Among the PR 48/53/57/63 series, PR 57:1 stands out for its superior lightfastness (6–7 on the Blue Wool Scale) and clean bluish red shade. The calcium lake structure imparts enhanced thermal stability and reduced water solubility compared to the sodium or barium lakes, making it the preferred choice for applications where durability matters.
星辉红 57:1 is produced by Hangzhou Starwin Tech Co., Ltd. with precise control over crystal morphology and particle size distribution. The pigment exhibits excellent dispersibility in both aqueous and solvent-based systems, high tinting strength, and outstanding transparency — enabling formulators to achieve deep, saturated shades at relatively low pigment loading.
密钥标识
| Property | 价值 |
|---|---|
| C.I. Name | 颜料红 57:1 |
| 客户编号 | 15850:1 |
| CAS 编号 | 6865-60-7 |
| 化学类别 | Monoazo |
| Color Shade | 蓝红色 |
| Molecular Formula | C₁₈H₁₂N₂O₆SCa |
| 分子量 | 424.47 g/mol |
Technical Specifications
| Parameter | Typical Value |
|---|---|
| Lightfastness (Full Shade, 1/1–1/3) | 6–7（蓝色羊毛色卡） |
| Heat Resistance | 最高可达 220 °C（短期） |
| 吸油 | 35–48 克/100 克 |
| pH of Aqueous Suspension | 7.0–9.5 |
| 水溶性 | < 0.2 % |
| Particle Size (D50) | 0.2–0.5 µm |
| 堆积密度 | 0.40–0.60 g/cm³ |
| 筛上残留物（45 µm） | ≤ 0.5 % |
How to Interpret These Values
Lightfastness on the Blue Wool Scale ranges from 1 (poor) to 8 (excellent). PR 57:1's rating of 6–7 places it among the higher-performance Monoazo pigments, suitable for both interior and protected exterior applications. Heat resistance up to 220 °C covers most plastic processing temperatures including PE, PP, and ABS injection molding. Oil absorption values indicate moderate binder demand, allowing high pigment loading without excessive viscosity increase.
关键应用领域
- 水性墨水： PR 57:1 is a premium choice for high-quality flexographic and gravure water-based inks where lightfastness and shade cleanliness are critical — ideal for brand packaging, labels, and premium printed materials.
- Textile Printing:在棉、聚酯及混纺面料上呈现明亮的蓝红色调，具有优异的耐洗色牢度（4–5）和耐摩擦色牢度，符合 Oeko-Tex 标准及各大品牌合规要求。
- Automotive Interior Coatings: The combination of lightfastness 6–7 and heat resistance to 220 °C makes PR 57:1 suitable for automotive interior trim coatings, dashboard finishes, and leather coatings exposed to sunlight through windshields.
- High-Performance Plastics: Compatible with PE, PP, PS, ABS, PVC, and engineering plastics at processing temperatures up to 220 °C. Provides uniform dispersion and minimal warping in injection-molded articles.
- 工业涂料：适用于卷材涂料、容器涂料及一般工业涂装，提供耐久的蓝红色调与良好的耐化学性。
重要提示
- PR 57:1 offers significantly better lightfastness than PR 53:1 (4–5) and PR 48:2 (4–5); upgrade to PR 57:1 when durability is a priority.
- 未经认证用于直接接触食品；针对具体用途，请核实是否符合 FDA 176.170 或欧盟 10/2011 规定。
- While calcium lakes have better alkali resistance than barium or sodium lakes, always test compatibility with high-pH (≥ 10) formulations before full-scale use.
- 请存放于阴凉干燥处，避免阳光直射和潮湿，以保持最佳分散性。
Packaging & Storage
标准包装：25 公斤多层纸袋（内衬 PE 袋），或供大批量用户使用的 500 公斤/1000 公斤吨袋。请置于干燥、通风良好的区域，温度保持在 5 °C 至 35 °C 之间，并保留原密封包装。在此条件下储存，产品自生产之日起至少可保持规格稳定 24 个月。
FAQ
Why does PR 57:1 have better lightfastness than PR 53:1 or PR 48:2?
The calcium lake structure in PR 57:1 forms a more compact, thermodynamically stable crystal lattice compared to the barium or sodium lakes. This tighter molecular packing reduces the rate of photo-oxidative degradation, resulting in higher lightfastness ratings. The 2B-acid chromophore itself is identical across the series — it is the metal salt that determines the performance envelope.
Can PR 57:1 replace PR 122 (Quinacridone) in automotive applications?
PR 57:1 的耐光性为6–7，适用于许多汽车内饰应用。然而，PR 122（喹吖啶酮品红）的耐光性为7–8，更适用于汽车外饰 OEM 涂层。PR 57:1 是内饰件、仪表板和皮革应用的绝佳高性价比替代方案，无需具备完整的外饰耐久性。
What is the recommended loading in plastic masterbatch?
For plastic masterbatch, typical pigment loading is 15–35 % by weight. In the final article, let-down ratios of 1:20 to 1:50 (masterbatch to natural polymer) are standard, yielding 0.3–1.75 % pigment concentration. PR 57:1's high tinting strength means effective coloration is often achieved at the lower end of this range.
为何选择我们
- 优质等级： Our PR 57:1 is manufactured to the highest industry standards with ΔE < 0.8 batch-to-batch consistency.
- 应用专长： Technical support team with deep knowledge of ink, coating, textile, and plastic formulations.
- 竞争性定价： Direct manufacturer pricing with volume discounts and flexible MOQ from 25 kg to full containers.
- 全球供应：上海/宁波 FOB 交货，交付周期 7–15 天；关键客户可享安全库存计划。
Contact Us
Request samples, TDS, MSDS, or bulk quotations by contacting Hangzhou Starwin Tech Co., Ltd. through the inquiry form or email. Our sales and technical team responds within one business day.
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