颜料红 53:1（星红 53:1）

产品概览

Pigment Red 53:1 is a Monoazo organic pigment belonging to the 2B-acid (Lithol Rubine) family, specifically the barium lake variant of the parent acid. As one of the highest-volume red pigments produced worldwide, PR 53:1 is valued for its outstanding color strength, excellent transparency, and cost-effectiveness. The pigment produces a clean medium red shade that can be easily let down to produce a wide range of pink and light red tones.

星辉红 53:1 is manufactured by Hangzhou Starwin Tech Co., Ltd. with tight control over particle size, crystal form, and surface chemistry. The result is a pigment that disperses readily in aqueous and solvent-based media, delivers consistent shade from batch to batch, and performs reliably across ink, coating, textile, and plastic applications.

Key Identification

Property	价值
C.I. Name	颜料红 53:1
客户编号	15620:1
CAS 编号	6358-85-6
化学类别	Monoazo
色度	中红色
Molecular Formula	C₁₇H₁₃N₂O₄SBa
分子量	442.83 g/mol

Technical Specifications

Parameter	Typical Value
Lightfastness (Full Shade, 1/1–1/3)	4–5（蓝色羊毛色卡）
耐热性	Up to 160 °C (short-term)
吸油	40–55 克/100 克
pH of Aqueous Suspension	7.0–9.0
水溶性	< 0.5 %
Particle Size (D50)	0.15–0.45 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). A rating of 4–5 indicates moderate resistance to UV fading, making PR 53:1 best suited for indoor applications or short-term outdoor use. Heat resistance of 160 °C covers most water-based ink and coating drying conditions but may be limiting for high-temperature plastic processing. Oil absorption affects formulation viscosity — higher values require proportionally more binder.

关键应用领域

• 水性墨水： PR 53:1 is a workhorse pigment for flexographic and gravure water-based inks, delivering strong, clean red shades on paper, board, and corrugated packaging at competitive cost.
• Textile Printing: Extensively used in pigment printing pastes for cotton and blended fabrics, producing bright medium red shades with acceptable wash-fastness for fashion and home textile applications.
• Coatings: Suitable for interior decorative coatings, primers, and industrial finishes where a transparent medium red is required. Compatible with alkyd, acrylic, and PVA-based systems.
• Plastics: Used in PVC, PE, and PS at processing temperatures up to 160 °C. Provides good color strength in let-down masterbatch formulations.
• Stationery & Pencil Leads: Its clean shade and high tinting strength make it popular in colored pencils, crayons, and watercolor paints.

重要提示

• PR 53:1 has lower lightfastness than PR 57:1 or PR 122; for applications requiring lightfastness ≥ 6, consider upgrading to a higher-performance pigment.
• Not recommended for food-contact applications without specific regulatory certification (FDA, EU 10/2011).
• 碱性条件（pH > 10）可能导致色相偏移，这是由酸性湖精结构引起的；在高 pH 配方中使用前请先测试兼容性。
• Always perform a draw-down test with your specific formulation to confirm shade and performance before bulk production.

Packaging & Storage

Packaged in 25 kg multi-wall paper bags with PE inner liner, or 500 kg / 1000 kg jumbo bags for large-volume orders. Store in original sealed packaging in a dry, well-ventilated area between 5 °C and 35 °C, away from direct sunlight. Properly stored, the product maintains its specifications for a minimum of 24 months.

FAQ

Why is PR 53:1 so widely used compared to other Monoazo reds?

PR 53:1 offers an exceptional balance of color strength, transparency, and cost. Its barium lake structure provides good dispersibility in both water-based and solvent-based systems, and its medium red shade is versatile enough for a wide range of applications. Combined with its competitive price point, it has become one of the highest-volume organic pigments globally.

Can PR 53:1 be used in solvent-based ink systems?

是的，PR 53:1 在溶剂型体系（包括醇类和酯类油墨）中分散性良好。不过，其水溶性略高于部分其他色淀，因此在水性配方中表现最佳，此时其优异的分散性成为显著优势。

What is the difference between PR 53:1 and PR 53:2?

PR 53:1 is the barium lake while PR 53:2 is the calcium lake of the same 2B-acid chromophore. The calcium variant typically offers slightly higher lightfastness and heat resistance but a marginally yellower shade. PR 53:1 is preferred where maximum color strength and clean medium red shade are priorities.

为何选择我们

• Volume & Value: As one of our flagship products, PR 53:1 benefits from economies of scale — competitive pricing even at moderate order quantities.
• Quality Assurance: Every batch tested for color strength (ΔE < 1.0), shade, dispersibility, and heat stability against certified reference standards.
• 技术支持： Our application lab offers free color matching, formulation advice, and sample evaluation.
• Fast Delivery:上海/宁波 FOB 交货，7–15 天交货期；常备客户可享安全库存。

Contact Us

For samples, technical data sheets, or volume quotations, contact Hangzhou Starwin Tech Co., Ltd.通过咨询表单或电子邮件联系我们，我们将在一个工作日内回复。