Description

Acid Black 172 is a high-performance, synthetic acid dye belonging to the azo chemical class. It is valued for its strong affinity to polyamide fibers like nylon and wool, providing deep, level shades with excellent wet fastness properties. This dye is essential for manufacturers in the textile and leather industries seeking durable, vibrant black coloration. Its consistent quality makes it a reliable choice for demanding industrial dyeing and printing processes.

Application

• Textile Dyeing: Primary application for dyeing nylon, wool, and silk fibers to achieve deep black shades.
• Leather Finishing: Used in the dyeing of leather goods, providing rich color and good penetration.
• Ink Formulation: A colorant component in the production of specialty inks for various substrates.
• Paper Coloration: Employed in the tinting of specialty papers where acid-fastness is required.
• Biomaterial Staining: Potential use as a biological stain in laboratory settings for microscopic analysis.

Basic Information

Product Name	Acid Black 172
CAS No.	61847-77-6
Molecular Formula	C32H21N5Na2O8S2
Molecular Weight	697.64 g/mol
Synonyms	Acid Black 172; C.I. Acid Black 172; Black 172; Acid Leather Black 172; Nylosan Black E-2R; Telon Black A2R; Aminyl Black F-2R; Supranol Fast Black 2R; Acid Dye Black 172
EINECS	Contact for details

Quality Control

Every batch of Acid Black 172 is manufactured and tested under a stringent quality management system to ensure consistent performance and purity. Our products undergo rigorous quality testing to ensure compliance with industry standards. Certificates of Analysis (COA) detailing key parameters such as color strength, shade, solubility, and impurity profile are available upon request.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated place at room temperature (15-25°C). Due to its hygroscopic (moisture-sensitive) nature, the container must be kept tightly sealed to prevent absorption of atmospheric moisture.

Specification

Item	Specification
Appearance	Black powder or granules
Identification (IR)	Conforms to standard
Assay (HPLC)	≥ 95%
Moisture Content	≤ 5.0%
Water Solubility	Conforms
Shade & Strength	Within ± 5% of standard
pH (1% Solution)	6.0 - 8.0

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