Description

Acid Black 52:1 is a high-performance, metallized acid dye belonging to the 1:2 chromium complex dye class. This product is engineered to deliver exceptional color fastness and leveling properties, making it a critical component for achieving durable and vibrant shades. It is primarily used by manufacturers in the textile and leather industries for dyeing polyamide fibers, wool, and silk, as well as for surface coating applications where wash and light fastness are paramount.

Application

• Primary dyeing of nylon (polyamide) fibers for apparel and automotive textiles.
• Dyeing of wool and silk fabrics, providing excellent wet fastness.
• Coloration of leather goods, including upholstery, footwear, and accessories.
• Surface coating and printing applications requiring high color strength.
• Used in combination with other acid dyes to produce a wide range of black and deep shade formulations.
• Suitable for exhaust, continuous, and printing dyeing processes in industrial settings.

Basic Information

Product Name	Acid Black 52:1
CAS No.	86543-84-2
Molecular Formula	C40H23CrN7Na4O19S4 (Typical for 1:2 metal complex structure)
Molecular Weight	~1180 g/mol (Contact for details)
Synonyms	Acid Black WAN; C.I. Acid Black 52:1; Chromium complex of 1:2 ratio; Acid Leather Black 52:1; Nylon Black 52:1; Acid Dye Black 52:1; 1:2 Metal Complex Black Dye; [7-[[8-[(2-Hydroxy-5-sulfophenyl)azo]-1-hydroxy-7-sulfo-2-naphthalenyl]azo]-8-hydroxy-2-naphthalenesulfonato(5-)]chromate(4-)
EINECS	Contact for details

Quality Control

Our Acid Black 52:1 is manufactured under a stringent quality management system to ensure batch-to-batch consistency and performance reliability. Each lot is tested against key parameters including shade, strength, solubility, and fastness properties. A comprehensive Certificate of Analysis (COA) detailing purity, metal content, and physical specifications is provided with every shipment to guarantee compliance with your technical requirements.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at room temperature (15-25°C). Keep away from strong oxidizing agents. The product is hygroscopic (moisture-sensitive); ensure containers are sealed after each use to prevent moisture absorption and caking.

Specification

Item	Specification
Appearance	Black powder or granules
Identification (IR)	Conforms to standard
Color Strength	100 ± 3% (vs. Standard)
Shade	Conforms to standard
Moisture Content	≤ 5.0%
Water Solubility	Conforms
pH (1% Solution)	6.0 - 8.0
Chromium Content	As per typical metal complex structure
Fastness Properties (Typical)	Light: 5-6; Wash: 4-5; Perspiration: 4-5

Note: Specifications can be tailored. Please contact us for the detailed technical data sheet of a specific grade.