颜料红 63:1（星红 63:1）

产品概览

Pigment Red 63:1 is a Monoazo organic pigment from the 2B-acid family, specifically the barium lake variant of a naphthol-based azo chromophore with a slightly different substitution pattern than the PR 48/53/57 series. This structural difference gives PR 63:1 a distinctive deep red to reddish-brown shade that fills a unique position in the color space — warmer and deeper than PR 53:1, yet more economical than quinacridone or diketopyrrolopyrrole alternatives.

星辉红 63:1 is manufactured by Hangzhou Starwin Tech Co., Ltd. with controlled crystallization and milling processes that ensure consistent particle size, good dispersibility, and reliable batch-to-batch shade reproducibility. The pigment is supplied as a free-flowing powder suitable for direct incorporation into aqueous and solvent-based systems.

密钥标识

Property	价值
C.I. Name	颜料红 63:1
客户编号	15880:1
CAS 编号	6358-79-8
化学类别	Monoazo
Color Shade	Deep red / reddish brown
Molecular Formula	C₂₀H₁₄N₂O₅SBa
分子量	480.90 g/mol

Technical Specifications

Parameter	Typical Value
Lightfastness (Full Shade, 1/1–1/3)	4–5（蓝色羊毛色卡）
Heat Resistance	最高可达 170 °C（短期）
吸油	42–55 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 on the Blue Wool Scale ranges from 1 (poor) to 8 (excellent). PR 63:1's rating of 4–5 indicates moderate UV resistance, making it best suited for indoor applications or products with limited outdoor exposure. Heat resistance up to 170 °C covers most ink drying and coating curing conditions, as well as lower-temperature plastic processing (PVC, LDPE). Oil absorption values indicate moderate binder demand, allowing reasonable pigment loading without excessive viscosity.

关键应用领域

• 水性墨水： PR 63:1 provides a warm, deep red shade in flexographic and gravure water-based inks for paper, board, and corrugated packaging. Its good color strength allows effective shading at moderate pigment loading.
• Textile Printing: Used in pigment printing pastes for cotton and blended fabrics where a deep, warm red is desired. Delivers acceptable wash-fastness for fashion and home textile applications.
• 橡胶混炼： The deep red shade and good dispersibility in rubber matrices make PR 63:1 popular for colored rubber soles, gaskets, hoses, and molded rubber goods.
• General-Purpose Coatings: Suitable for interior decorative coatings, primers, and industrial finishes where a warm reddish-brown tone is needed. Compatible with alkyd, acrylic, and water-borne resin systems.
• Plastics: Used in PVC, LDPE, and PS at processing temperatures up to 170 °C. Provides uniform coloration in calendared sheets, films, and injection-molded articles.

重要提示

• PR 63:1 has lower lightfastness (4–5) than PR 57:1 (6–7); for applications requiring extended outdoor durability, consider upgrading to PR 57:1 or a quinacridone pigment.
• Not certified for direct food-contact applications; verify regulatory compliance (FDA, EU 10/2011) for specific use cases.
• The deep red / reddish-brown shade is distinct from the brighter bluish reds of PR 53:1 and PR 57:1 — always confirm shade match with a draw-down before production.
• Avoid use in strongly alkaline formulations (pH > 10) without prior compatibility testing.

Packaging & Storage

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

FAQ

How does PR 63:1 differ in shade from PR 53:1?

PR 53:1 delivers a clean medium red, while PR 63:1 produces a deeper, warmer red with brownish undertones. The difference arises from the slightly different chromophore structure — PR 63:1 has an additional methoxy substitution on the naphthol ring, shifting the absorption spectrum toward longer wavelengths. Choose PR 63:1 when a warm, earthy red is needed rather than a bright, clean red.

Is PR 63:1 suitable for outdoor applications?

With lightfastness 4–5, PR 63:1 is best suited for indoor applications or products with limited UV exposure. For outdoor applications requiring lightfastness ≥ 6, consider PR 57:1 (lightfastness 6–7) or higher-performance pigments like PR 122 (quinacridone) or PR 254 (DPP).

What is the typical dosage in rubber compounding?

In rubber compounding, PR 63:1 is typically added at 1–5 phr (parts per hundred rubber) depending on desired shade depth. For medium-depth red rubber soles, 2–3 phr is common. The pigment disperses readily during standard Banbury or two-roll mill mixing. Always verify shade and dispersion quality with a lab batch before full production.

为何选择我们

• Cost-Effective: PR 63:1 offers a unique deep red shade at a competitive price point, filling the gap between bright Monoazo reds and expensive high-performance pigments.
• Quality Control: Every batch tested for shade (ΔE < 1.0), color strength, dispersibility, and heat stability against certified reference standards.
• 技术支持： Our application lab provides free color matching, formulation optimization, and sample evaluation.
• 可靠供应：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 bulk quotations, contact Hangzhou Starwin Tech Co., Ltd. via the inquiry form or email. Our team responds within one business day.