Black 5

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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.

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Category: Dyes and Pigments

Description

Table of Contents

Black 5

Primary Uses

Textile Industry

Used extensively for dyeing wool, silk, nylon, and other protein fibers
Commonly applied in yarn, garment dyeing, and piece dyeing processes
Suitable for both exhaust and continuous dyeing systems
Used in blends to achieve deep greys and jet blacks

Cosmetics and Personal Care

Used in hair color formulations and semi-permanent dyes
Added to liquid soaps, shampoos, and lotions for decorative coloration
Incorporated in eyeliners, mascaras, and other dark cosmetic products

Pharmaceutical and Nutraceutical Applications

Used as a colorant in capsules, tablets, and liquid medications for visual identification

Cleaning and Detergent Products

Added to toilet blocks, floor cleaners, and liquid detergents for aesthetic appeal
Used in specialty soaps and industrial hand cleaners for coloration

Paints and Coatings

Incorporated into artist paints and decorative coatings
Used in inks, craft paints, and coatings requiring deep black hues

Secondary Uses

Food and Beverage

Used in confectionery, icings, and beverages as a colorant
Suitable for sauces, candies, and food decorations

Art and Ink Products

Used in inkjet inks, markers, and fountain pen inks
Popular in calligraphy, printing inks, and stamping products

Industrial Applications

Used in leather dyeing, paper coloring, and synthetic fiber coloration
Applied in adhesives and sealants requiring visual coloring

KEY PRODUCT FEATURES

1. Basic Identification Attributes

Common/Trade Name: Black 5
CI Name: Acid Black 5
CI Number: 20470
INCI Name: CI 20470
CAS Number: 1064-48-8
Synonyms: Acid Black 5, Food Black 1, C.I. Acid Black 5, Black Food Dye

2. Physical & Chemical Properties

Physical State: Powder or granules
Color & Odor: Dark black to bluish-black; odorless
Solubility: Soluble in water; insoluble in oils
pH Range: Stable in acidic conditions
Melting Point: Not applicable
Shelf Life: 24–36 months under recommended storage

3. Safety & Hazard Attributes

GHS Classification: May cause eye and skin irritation in concentrated form
Toxicity: Generally low when used as directed
Allergen Information: Not a known allergen
Exposure Limits: Avoid inhalation of dust during bulk handling

4. Storage & Handling Attributes

Storage Conditions: Store in a tightly sealed container, away from moisture and direct sunlight
Container Type: 25kg HDPE bags or fiber drums with liners
Shelf Life: 24–36 months in original packaging
Handling Precautions: Use gloves and dust mask in manufacturing environments

5. Regulatory & Compliance Attributes

Subject to approval for food, pharmaceutical, or cosmetic use depending on region
Must meet appropriate specifications
Verified for batch consistency and purity based on intended application
Not approved for ingestion in all countries

6. Environmental & Health Impact

Biodegradability: May be slow to degrade
Ecotoxicity: May pose risk to aquatic life in high concentrations
Bioaccumulation: Not expected

SAFETY HANDLING PRECAUTIONS

Safety Handling Precautions

Use PPE in powder handling to prevent respiratory exposure

First Aid Measures

Inhalation: Move to fresh air; seek medical attention if symptoms persist
Skin Contact: Wash thoroughly with soap and water
Eye Contact: Flush with plenty of water for 15 minutes
Ingestion: Not intended for ingestion; seek medical advice immediately

Firefighting Measures

Fire Hazards: Combustible as fine dust
Extinguishing Media: Use dry chemical, foam, or CO₂
Special Precautions: Avoid generating dust; use protective equipment
Hazardous Combustion Products: May emit carbon oxides, nitrogen oxides, and sulfur compounds