Starwin Ultramarine Blue - Pigment Blue 29

产品概览

Pigment Blue 29, commonly known as Ultramarine Blue, is a high-performance inorganic blue pigment belonging to the sodium aluminum sulphosilicate family. It is produced by calcining a mixture of kaolin, sulfur, sodium carbonate, and reducing agents at high temperature, followed by grinding and classification. The result is a pigment with a unique reddish-blue (red-shade) tone that cannot be matched by organic blue pigments such as phthalocyanine blue.

Starwin Ultramarine Blue is the commercial-grade Pigment Blue 29 supplied by Hangzhou Starwin Tech Co., Ltd. With more than 15 years of experience in inorganic pigment production, Starwin delivers consistent tinting strength, stable red-shade hue, and reliable batch-to-batch reproducibility for paints, coatings, plastics, inks, rubber, and specialty applications.

Key Identification

Property	价值
Product Name (EN)	Ultramarine Blue
商号	Starwin Ultramarine Blue
C.I. Name	Pigment Blue 29
客户编号	77007
CAS 编号	57455-37-5
Molecular Formula	Na₆Al₄Si₆S₄O₂₀ (approximate)
分子量	971.50 (approx.)
化学类别	Inorganic / Sodium Aluminum Sulphosilicate
外观	Blue powder
色度	Red-shade blue
Crystal System	Cubic (sodalite structure)

Technical Specifications

The following data represents typical performance properties of Starwin Ultramarine Blue. Actual values may vary by grade — please refer to the Certificate of Analysis (COA) for each shipment.

Parameter	规格
Purity (as Na₆Al₄Si₆S₄O₂₀)	≥ 95%
含水量	≤ 0.5%
吸油	25 – 40 g/100g
Specific Gravity	2.35 – 2.45 g/cm³
堆积密度	0.50 – 0.70 g/cm³
Mean Particle Size (d50)	1.0 – 3.0 μm (depending on grade)
Residue (45 μm)	≤ 0.1%
Free Sulfur	≤ 0.05% (low-sulfur grades available)
Water-Soluble Matter	≤ 1.0%
Light Fastness (Blue Wool Scale)	8 (excellent)
Weather Fastness	8 (excellent)
耐热性	≥ 300°C (5 min) / > 350°C (short-term)
耐酸性	Poor (Grade 1) — not suitable for acidic systems
耐碱性	Excellent (Grade 4)
迁移阻力	5 (non-migratory)
包装	25 kg/bag with inner PE liner
存储	Cool, dry, ventilated area, away from direct sunlight
HS 编码	32061100

How to Interpret These Specifications

• Color Shade (Red-Shade Blue): Ultramarine Blue is characterized by a unique reddish-blue tone that makes white shades appear whiter, grey shades appear more blue, and black shades appear deeper. This "bluing" effect is one of its most valuable properties.
• Light Fastness (Grade 8): Ultramarine Blue is one of the most lightfast pigments available. It does not fade under UV exposure, making it suitable for both interior and exterior applications.
• Heat Resistance (≥ 300°C): Excellent thermal stability. Suitable for high-temperature plastic processing and demanding coating applications.
• Acid Resistance (Poor): Ultramarine Blue is not resistant to acids. It decomposes in acidic environments, releasing hydrogen sulfide and losing its blue color. Acid-resistant coated grades are available for applications where acid exposure is unavoidable.
• 耐碱性（优）: Stable in alkaline environments, making it suitable for cement, detergents, and other alkaline systems.
• Non-Migratory: Ultramarine Blue does not bleed or migrate, ensuring permanent color in plastics, rubber, and coatings.

Acid-Resistant (AR) Grades

Standard Ultramarine Blue is not resistant to acids. For applications where acid exposure is unavoidable, Starwin offers acid-resistant (AR) grades. These grades feature an inert coating deposited on the pigment particle surface to protect it from acid attack. Starwin's AR grades are engineered to resist coating abrasion during dispersion, maintaining acid resistance even after high-energy processing.

Typical applications for acid-resistant grades:

• Exterior paints and coatings in acidic environments
• Plastics exposed to acidic chemicals
• Rubber products in contact with acidic media
• Construction materials in industrial environments

关键应用领域

1. Paints & Coatings

• Architectural Paints: Used as a bluing agent to neutralize yellowing in white paints and to create clean, bright blue shades. Excellent lightfastness and weather fastness make it suitable for both interior and exterior applications.
• Industrial Coatings: Used in general industrial finishes, powder coatings, and coil coatings. Heat resistance up to 300°C allows use in demanding coating systems.
• Artists' Paints: A staple in artists' palettes for centuries due to its unique red-shade blue tone and excellent permanence.

2. Plastics & Masterbatch

• 黑色母粒： Used as a toner to adjust the undertone from brownish-black to jet-black.
• White Masterbatch: Used as a bluing agent to make white plastics appear whiter by neutralizing yellow tones.
• Colored Plastics: Used in PE, PP, PVC, PS, ABS, PC, nylon, and engineering plastics. Non-migratory and non-bleeding properties ensure permanent color.
• Film & Fiber: Fine-particle grades are specifically developed for film and fiber applications where particle size and absence of oversized residues are critical.

3. 印刷油墨

• Offset Inks: Used in sheetfed and web offset inks for its clean red-shade blue tone.
• Gravure & Flexographic Inks: Suitable for packaging gravure and flexo inks.
• 水性墨水： Disperses well in aqueous systems.

4. Rubber & Elastomers

Used in natural and synthetic rubber compounds. Non-bleeding and non-migratory properties ensure permanent color. Approximately 5.0% is recommended for full-strength shade, and 0.25% as a bluing agent in whitewall stock.

5. Cosmetics & Personal Care

High-purity grades are used in cosmetics including eye shadows, blushes, and other color cosmetics. Pigment Blue 29 is approved for cosmetic use in the EU and US, subject to purity requirements.

6. Detergents & Soaps

Used as a bluing agent in laundry detergents, soaps, and cleaning products to counteract yellowing and enhance the perception of whiteness.

7. Paper & Construction

Used in paper coloring and as a bluing agent in white paper. Also used in cement, concrete, and other construction materials for coloring and whitening effects.

Grade Selection Guide

Grade Type	Key Features	Primary Applications
High-Strength Red-Shade	Fine particle size (1.0–1.5 μm), tinting strength 100–130%	Plastics, masterbatch, film & fiber
General-Purpose	Medium particle size, cost-effective	Coatings, inks, general coloring
Acid-Resistant (AR)	Coated particles for acid protection	Exterior coatings, acid-exposed plastics
Low-Sulfur / High-Purity	Free sulfur < 0.02%, heavy metals controlled	Cosmetics, food contact plastics

Packaging & Storage

• 包装： 25 kg/bag with inner PE liner. 25 kg fiber drum available. Bulk super sacks available upon request. Custom packaging options available.
• Storage: Store in a cool, dry, well-ventilated area away from direct sunlight and heat sources. Avoid moisture absorption — keep bags sealed when not in use. Shelf life: indefinite under proper storage conditions.
• 交通： Not classified as dangerous goods under UN transportation regulations. Handle with care to avoid bag breakage and dust generation.

Frequently Asked Questions (FAQ)

What is the difference between Ultramarine Blue and Phthalocyanine Blue?

Ultramarine Blue (PB29) is an inorganic pigment with a unique reddish-blue tone, excellent lightfastness (Grade 8), and heat resistance up to 300°C. However, it has poor acid resistance. Phthalocyanine Blue (PB15) is an organic pigment with a greener shade, excellent chemical resistance, and superior acid resistance. The choice depends on the specific application requirements — Ultramarine Blue is preferred for its unique shade and bluing effect, while Phthalocyanine Blue is chosen for chemical durability.

Is Ultramarine Blue safe for food contact applications?

Yes. Pigment Blue 29 is FDA compliant under CFR 21, Sec 177.2600 and 178.3297 for food contact applications. Starwin offers low-sulfur, high-purity grades specifically designed for food contact and cosmetic applications.

Can Ultramarine Blue be used in exterior applications?

Yes. With lightfastness Grade 8 and weather fastness Grade 8, Ultramarine Blue is excellent for exterior applications. For environments with acid exposure, use acid-resistant (AR) grades.

What is the maximum processing temperature?

Ultramarine Blue can withstand temperatures up to 300°C for 5 minutes and over 350°C for short-term exposure. This makes it suitable for most plastic processing including PE, PP, and engineering plastics.

是否提供样品、COA 和 SDS？

是的，杭州星赢科技有限公司提供样品供评估，每批货物均附带COA和SDS。

Why Choose Hangzhou Starwin Tech Co., Ltd. as Your Ultramarine Blue Supplier?

• 15+ Years Experience: Deep expertise in inorganic pigment production with consistent quality control.
• 多种等级可选： High-strength, general-purpose, acid-resistant, and low-sulfur grades to meet diverse application needs.
• Competitive Equivalents: Our grades match the performance profiles of leading international brands including Venator, Holliday, Nubiola/Ferro, and Akrochem.
• 技术支持： Application lab offers free color matching, grade selection guidance, and formulation advice.
• 可靠供应： Stable production capacity serving customers across Asia, Europe, and the Americas.
• Competitive Pricing: Direct from manufacturer with flexible MOQ options.

Contact Us

杭州星威科技有限公司

关于技术数据表（TDS）、安全数据表（SDS）、样品或价格咨询，Starwin Ultramarine Blue (Pigment Blue 29, CAS 57455-37-5)，请联系我们的团队。

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