Pigment Red
颜料红 48:3（星红 48:3）
Pigment Red 48:3 (CAS 7023-63-6, C.I. 15865:3) is a Monoazo organic pigment delivering a bluish red shade. It offers good color strength, moderate lightfastness (5–6), and excellent dispersibility in aqueous and solvent-based systems. Widely used in water-based inks, textile printing pastes, coatings, and plastics where a clean bluish-red tone is required. Supplied as a free-flowing powder with consistent batch-to-batch color stability.
Key Information
技术规格
产品概览
Pigment Red 48:3 is a Monoazo-type organic pigment belonging to the Lithol Rubine family, recognized for its vivid bluish red hue and strong tinting power. The barium lake variant of the 2B-acid series, PR 48:3 delivers reliable performance across a broad spectrum of industrial applications. Its molecular structure — a naphthol-based azo chromophore complexed with barium — imparts excellent color strength and good transparency in both transparent and semi-opaque formulations.
Manufactured under strict quality control by Hangzhou Starwin Tech Co., Ltd., 星辉红 48:3 ensures uniform particle size distribution, low volatile content, and outstanding batch-to-batch consistency. The pigment is readily dispersible in water-based and solvent-based media, making it a versatile choice for ink, coating, textile, and plastic applications.
Key Identification
| Property | 价值 |
|---|---|
| C.I. Name | 颜料红 48:3 |
| 客户编号 | 15865:3 |
| CAS 编号 | 7023-63-6 |
| 化学类别 | Monoazo |
| 色度 | 蓝红色 |
| Molecular Formula | C₁₈H₁₂N₂O₆SBa |
| 分子量 | 474.87 g/mol |
Technical Specifications
| Parameter | Typical Value |
|---|---|
| Lightfastness (Full Shade, 1/1–1/3) | 5–6（蓝色羊毛色卡） |
| 耐热性 | Up to 180 °C (short-term) |
| 吸油 | 40–50 克/100 克 |
| pH of Aqueous Suspension | 7.0–9.0 |
| 水溶性 | < 0.5 % |
| Particle Size (D50) | 0.2–0.5 µm |
| 堆积密度 | 0.45–0.65 g/cm³ |
| 筛上残留物（45 µm） | ≤ 0.5 % |
How to Interpret These Values
Lightfastness ratings follow the Blue Wool Scale (1 = poor, 8 = excellent). A rating of 5–6 indicates good resistance to fading under prolonged UV exposure, suitable for indoor and semi-outdoor applications. Heat resistance values represent short-term thermal stability during processing; continuous exposure above 180 °C may cause shade shift. Oil absorption affects formulation viscosity — higher values require more binder or dispersant.
关键应用领域
- 水性墨水： Excellent dispersibility and color strength make PR 48:3 ideal for flexographic and gravure water-based inks on paper, board, and corrugated packaging.
- Textile Printing: Widely used in pigment printing pastes for cotton, polyester, and blended fabrics, delivering bright bluish red shades with good wash-fastness.
- Coatings: Suitable for decorative and industrial coatings where a transparent bluish red is needed; compatible with most alkyd, acrylic, and water-borne resin systems.
- Plastics:适用于 PVC、PE、PP 和 PS 材料，加工温度最高可达 180 °C，着色均匀且变形极小。
- Rubber & Leather: Applied in colored rubber goods and leather finishes for its strong tinting power and ease of dispersion.
重要提示
- 除非已通过特定法规框架认证（如 FDA、欧盟 10/2011），否则不建议用于食品接触应用。
- Alkaline conditions (pH > 10) may cause shade shift toward a more violet tone due to the acid lake structure.
- Always conduct a compatibility test with your specific resin, solvent, or additive system before full-scale production.
- Store in a cool, dry environment away from direct sunlight to preserve color integrity.
Packaging & Storage
Standard packaging: 25 kg multi-wall paper bags with PE inner liner, or 500 kg / 1000 kg jumbo bags upon request. Store in original packaging in a dry, well-ventilated area between 5 °C and 35 °C. Properly stored, the product maintains its specifications for a minimum of 24 months from the date of manufacture.
FAQ
What is the difference between PR 48:1, 48:2, 48:3, and 48:4?
They share the same 2B-acid chromophore but differ in the metal salt used for lake formation: sodium (48:1), calcium (48:2), barium (48:3), and manganese (48:4). The metal salt affects shade, lightfastness, and solvent resistance. PR 48:3 (barium) offers a bluish red shade with moderate lightfastness, while PR 48:2 (calcium) is more yellowish-red with higher lightfastness.
Can PR 48:3 be used in solvent-based ink systems?
是的，PR 48:3 在水基和溶剂型体系中均分散性良好。不过，其水溶性略高于钙盐或锰盐，因此最适合用于水基配方，以充分发挥其优异的分散性能。
What is the recommended dosage in textile printing?
Typical dosage ranges from 1–5 % on print paste weight depending on desired shade depth. For medium-depth shades, 2–3 % is common. Always perform a lab draw-down to confirm shade match before bulk production.
为何选择我们
- 品质一致： Every batch is tested for color strength, shade, lightfastness, and dispersibility against in-house reference standards.
- 技术支持： Our application lab provides free color matching, formulation advice, and sample evaluation.
- Competitive Pricing:直供厂家价格，支持灵活起订量及批量折扣。
- 全球物流： FOB Shanghai / Ningbo with typical lead time of 7–15 days for standard orders.
Contact Us
For samples, technical data sheets, or bulk quotations, please contact Hangzhou Starwin Tech Co., Ltd. via the inquiry form on this page or email our sales team. We typically respond within one business day.
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