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Acid Black 2 Crystal
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Acid Black 2 Crystal is a synthetic acid dye of the azo class, presented in crystalline form, known for its intense black coloration and excellent solubility in acidic aqueous solutions. This dye is primarily used for dyeing protein fibers such as wool, silk, and nylon, as well as leather and certain synthetic fibers under acidic conditions. Acid Black 2 Crystal provides deep, uniform black shades with good wash and light fastness properties, making it ideal for textile and leather applications. It is widely used in industrial dyeing processes, research formulations, and laboratory testing due to its chemical stability and high purity.
Category: Dyes and Pigments
Tags: Acid Black 2, Acid Dye Crystal, Azo Dye, Black Colorant, High Purity Dye, Leather Dye, Textile dye, Water-soluble dye
Description
Table of Contents
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Acid Black 2 Crystal
Primary Uses
- Textile and Leather Processing
- Used extensively for dyeing wool, silk, nylon, and other protein fibers to achieve deep black coloration.
- Applied in leather tanning and dyeing processes to obtain consistent and durable black shades.
- Utilized in textile printing and finishing for producing high-quality black patterns.
- Employed in acid dye baths for uniform dye uptake on sensitive fabric substrates.
- Industrial Applications
- Used in manufacturing of colored filters, inks, and coatings requiring acid-stable black pigments.
- Incorporated in quality control processes and research formulations in textile industries.
- Applied as an analytical reagent in laboratory tests related to dyeing and fiber characterization.
Secondary Uses
- Cosmetic and Personal Care
- Occasionally used in acid-based hair dye formulations (subject to regulatory approval).
- Incorporated in external-use cosmetic products for black pigmentation where permitted.
- Scientific and Research
- Used in histology and microscopy staining to provide contrast in biological samples.
- Employed in educational and laboratory settings for demonstrations and dyeing experiments.
KEY PRODUCT FEATURES
1. Basic Identification Attributes
- Botanical Source: Synthetic
- Common/Trade Name: Acid Black 2 Crystal
- INCI Name: Acid Black 2
- CAS Number: 1533-45-5
- HS Code: 3204.11
- Synonyms: Acid Black 2, Acid Black 2 Dye, CI Acid Black 2
2. Physical & Chemical Properties
- Physical State: Crystalline solid
- Color & Odor: Deep black; odorless
- Solubility: Highly soluble in water under acidic conditions
- Density: Approximately 1.5 g/cm³
- pH Stability: Stable within acidic pH range (1-4)
- Shelf Life: 24 months under proper storage conditions
3. Safety & Hazard Attributes
- GHS Classification: May cause skin and eye irritation
- Toxicity: Moderate toxicity if ingested; avoid dust inhalation
- Allergen Information: Possible allergen for sensitive individuals
- Exposure Limits: Follow occupational safety guidelines for dyes and powders
4. Storage & Handling Attributes
- Storage Conditions: Store in cool, dry, and well-ventilated areas away from strong oxidizers and sunlight
- Container Type: Sealed polyethylene or chemically resistant containers
- Shelf Life: 24 months if stored under recommended conditions
- Handling Precautions: Use proper PPE such as gloves, masks, and protective clothing to avoid dust exposure
5. Regulatory & Compliance Attributes
- Complies with industrial dye regulations; not approved for food or drug applications
- Limited use in cosmetics and personal care products requiring regulatory clearance
- Manufactured in GMP-compliant facilities for industrial and laboratory use
6. Environmental & Health Impact
- Biodegradability: Moderate; disposal should follow environmental regulations
- Ecotoxicity: Potentially toxic to aquatic organisms at high concentrations
- Bioaccumulation: Not expected under normal use conditions
SAFETY HANDLING PRECAUTIONS
Safety Handling Precautions
- PPE Required: Gloves, protective eyewear, and dust mask
- Handling Guidelines: Avoid dust generation and direct skin contact
First Aid Measures
- Inhalation: Move to fresh air; seek medical attention if symptoms persist
- Skin Contact: Wash affected areas thoroughly with soap and water
- Eye Contact: Rinse eyes immediately with plenty of water; seek medical advice if irritation continues
- Ingestion: Do not induce vomiting; seek immediate medical attention
Firefighting Measures
- Fire Hazards: Combustible under intense heat
- Extinguishing Media: Water spray, foam, or dry chemical extinguishers
- Special Precautions: Avoid inhalation of combustion fumes
- Hazardous Combustion Products: Carbon oxides, nitrogen oxides
Related products
Acid Black 2 Powder
Acid Black 2 Powder is a synthetic anionic disazo dye belonging to the acid dye class, specifically formulated for intense black coloration with excellent light and wash fastness properties. This high-purity powder (100% active) exhibits superior solubility in aqueous solutions, making it particularly suitable for dyeing protein-based fibers like wool, silk, and nylon under acidic conditions. As a chromium-complex dye, it delivers enhanced color depth and improved fastness characteristics compared to non-metalized acid dyes. The powder form ensures precise dosing, consistent batch-to-batch reproducibility, and long-term stability when stored properly. Its molecular structure features sulfonic acid groups that facilitate strong ionic bonding with amino groups in fibers, resulting in vibrant, penetration-rich coloration with minimal bleeding.
Acid Black 210
Acid Black 210 is a high-performance, metal-complex acid dye specifically engineered for deep black shades with exceptional wet fastness properties. This chromium-based dye belongs to the 1:2 metal complex dye class, offering superior molecular stability and fiber affinity. The powder formulation delivers consistent, vibrant coloration for synthetic polyamide fibers and protein-based textiles, with optimized characteristics for industrial dyeing processes. Its molecular structure features multiple sulfonic acid groups that ensure excellent water solubility and penetration, while the metal complex formation provides enhanced light and wash fastness compared to non-metalized acid dyes.
Black 5
Black 5, also known as Acid Black 5 or CI 20470, is a synthetic dye commonly used in various industries for its deep, rich black to bluish-black color. It belongs to the azo dye family and is typically supplied as a fine powder or granules in industrial packaging, such as 25kg bags. Black 5 is water-soluble and exhibits excellent stability in acidic conditions, making it ideal for applications in textiles, personal care, and some food and pharmaceutical formulations where permitted.
This dye offers high tinctorial strength, consistent batch-to-batch quality, and compatibility with other dyes for custom blends. It is used both for its standalone dark color and to darken or tone other dye shades.
Blue Dye
Blue Dye is a water-soluble synthetic dye solution with 6% active dye content, providing a vivid blue coloration for various industrial applications. It is formulated for easy dispersion in aqueous systems and offers consistent color strength and stability. This dye is widely used in textile dyeing, paper coloring, cosmetics, and cleaning products.
Brilliant Blue Dye
Brilliant Blue Dye is a synthetic acid dye known for its bright, vibrant blue coloration and excellent affinity for protein fibers such as wool, silk, and nylon. It is highly soluble in water under acidic conditions, delivering uniform and vivid dyeing results. This dye is widely used in textile dyeing, leather processing, and specialty applications requiring stable and durable blue shades. Brilliant Blue Dye exhibits excellent fastness to washing, light, and perspiration, making it ideal for high-quality fabric and leather products.
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Phytaloc Yamine green
Phytaloc Yamine Green is a specialized green-colored amine-based chemical used primarily as a corrosion inhibitor and pH stabilizer in various industrial and water treatment applications. It offers excellent protection against metal corrosion and scale formation in cooling systems, boilers, and pipelines. This product is formulated for easy handling and compatibility with diverse chemical environments, making it a versatile additive in process industries.
Purple Pigment
Purple Pigment is a colorant formulation containing 10% concentrated purple pigment dispersed in a carrier matrix. It is used to impart purple coloration in a wide range of applications, offering excellent color stability, UV resistance, and compatibility with various substrates. This pigment preparation is widely utilized in plastics, coatings, inks, textiles, cosmetics, and construction materials, where consistent hue and dispersion are essential.

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