Pigment Yellow
颜料黄 65（星辉黄 65）
Pigment Yellow 65 (CAS 6842-68-8, C.I. 21167) is a disazo organic pigment offering a bright, pure medium-yellow shade with excellent tinting strength and good flow characteristics. PY65 is particularly valued in high-quality publication gravure and flexographic printing where color purity and consistent ink transfer are paramount. It demonstrates strong resistance to solvents and plasticizers, good lightfastness (rating 4–5), and thermal stability up to 170 °C. This pigment is widely applied in solvent-based and water-based printing inks, decorative paints, and select plastic coloration applications requiring a clean, saturated yellow with reliable batch-to-batch performance.
Key Information
技术规格
产品概览
Starwin Yellow 65 (Pigment Yellow 65, C.I. 21167, CAS 6842-68-8) is a disazo yellow pigment prized for its pure, saturated medium-yellow color and outstanding performance in high-speed printing applications. Its molecular design delivers a shade that sits between the greenish PY12/PY62 and the reddish PY13 — making it a versatile "true yellow" that serves as a reliable process color and spot color across multiple printing technologies.
Hangzhou Starwin Tech Co., Ltd. manufactures PY65 with proprietary surface modification technology that enhances wetting by ink vehicles and reduces dispersion time, directly improving pressroom productivity.
密钥标识
| Property | 价值 |
|---|---|
| C.I. Generic Name | 颜料黄 65 |
| 客户编号 | 21167 |
| CAS Registry No. | 6842-68-8 |
| 化学类别 | 双偶氮 |
| Visual Appearance | Pure medium-yellow powder |
| Molecular Formula | C₃₂H₂₆Cl₂N₆O₆ |
Technical Specifications
| Parameter | Typical Value |
|---|---|
| Lightfastness (Full Shade) | 4–5（蓝色羊毛色卡） |
| 耐热性 | Up to 170 °C |
| 吸油 | 40–50 克/100 克 |
| 堆积密度 | 0.30–0.45 g/cm³ |
| Particle Size (D50) | 0.12–0.20 微米 |
| pH of Aqueous Suspension | 5.5–7.5 |
| 水溶性 | ≤ 0.3 % |
How to Interpret These Specifications
The particle size (D50: 0.12–0.20 μm) is optimized for high-line-screen printing — fine enough to pass through 150+ lpi screens without dot loss, yet large enough to maintain good tinting efficiency. Heat resistance to 170 °C covers most flexible packaging ink drying conditions and standard plastic compounding temperatures. The moderate oil absorption (40–50 g/100g) allows formulators to achieve high pigment loading while maintaining acceptable ink viscosity for high-speed press operation.
关键应用领域
- 出版物：凹版印刷 Pure yellow shade and fine particle size produce clean, high-definition process-color images on high-speed rotary gravure presses.
- Flexographic Inks (Solvent & Water-Based): Excellent dispersibility and low foaming tendency ensure consistent color on absorbent and film substrates.
- Sheetfed Offset Inks: Good tack response and clean transfer properties deliver sharp halftone reproduction.
- Decorative & Industrial Paints: Saturated color and good weather resistance suit interior and exterior paint formulations.
- Plastic Masterbatches: Compatible with PE, PP, and PVC carriers for packaging film and consumer goods coloration.
重要提示
- For applications requiring maximum outdoor durability (>2 years full exposure), consider a higher-performance yellow such as PY74 or PY151.
- When formulating water-based inks, ensure complete neutralization of the resin (pH 8.5–9.5) to prevent flocculation.
- PY65 may show slight metamerism under different light sources — evaluate shade under your target lighting condition.
Packaging & Storage
Available in 25 kg multi-wall paper bags with PE liner, or 500 kg / 1000 kg jumbo bags. Store in original, sealed packaging in a dry, well-ventilated warehouse at 5–35 °C. Protect from moisture, heat sources, and direct sunlight. Shelf life: 36 months from date of manufacture under recommended storage conditions.
FAQ
What is the shade difference between PY65 and PY12?
PY65 is a "truer" medium yellow — less green than PY12 and less red than PY13. It sits in the middle of the disazo yellow shade spectrum, making it an excellent general-purpose process yellow.
Can PY65 be used in aluminum paste coatings?
Yes, PY65 disperses well in aluminum paste and metallic ink formulations. Its fine particle size does not interfere with aluminum flake orientation, preserving metallic luster while adding yellow tint.
What is the typical grinding time for optimal dispersion?
In a three-roll mill with standard offset ink vehicle, 2–3 passes at 0.1 mm gap typically achieve Hegman gauge 6+ (fully dispersed). In water-based systems with a high-speed disperser, 15–25 minutes at 1500 rpm is sufficient.
为何选择我们
Hangzhou Starwin Tech Co., Ltd. produces PY65 with industry-leading color consistency (ΔE ≤ 0.5 per batch), comprehensive regulatory documentation, and dedicated technical support. Our state-of-the-art manufacturing facility ensures reliable supply and on-time delivery for customers worldwide.
联系我们
For technical data sheets, safety data sheets, free lab samples, or bulk pricing, contact our sales team. We respond within 24 hours on business days and offer flexible logistics from our Hangzhou warehouse.
产品文档
Download technical documents for this product
MSDS
即将上线
总溶解固体
即将上线
COA
即将上线