Description

Fast Black K Salt Practical Grade is a diazonium salt primarily used as a key intermediate in the synthesis of azo dyes and pigments. This compound matters for its ability to produce deep, fast black shades with good light and wash fastness properties on various substrates. It is needed by manufacturers in the textile, leather, ink, and specialty chemical industries seeking reliable and cost-effective colorant production.

Application

• Primary intermediate for the synthesis of azo dyes and pigments, particularly those yielding black colors.
• Coupling component in the production of dyes for textile fibers such as cotton, silk, and nylon.
• Manufacturing of colorants for leather finishing and treatment processes.
• Used in formulating specialty printing inks for packaging and commercial printing.
• Potential use as a colorant intermediate in the production of paper and pulp products.
• Research and development of novel functional dyes for non-textile applications.

Basic Information

Product Name	Fast Black K Salt Practical Grade
CAS No.	27766-47-8
Molecular Formula	C12H9Cl2N3O2
Molecular Weight	298.12 g/mol
Synonyms	Fast Black K Salt; 4-Nitro-2-aminophenol Diazonium Salt; 2-Amino-4-nitrophenol Diazonium Salt; 2-Methoxy-4-nitroaniline Diazonium Salt (related); Diazonium, [2-(methoxy)-5-nitrophenyl]-, chloride; Fast Black K Base; C.I. 37190; Azoic Diazo Component 38
EINECS	Contact for details

Quality Control

Our Fast Black K Salt Practical Grade is produced under a rigorous quality management system. Each batch undergoes comprehensive analytical testing to ensure it meets defined specifications for identity, purity, and performance. A Certificate of Analysis (COA) detailing assay, impurity profile, and other critical parameters is available upon request to support your quality assurance protocols.

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 after opening to minimize exposure to atmospheric humidity. Keep away from heat, sparks, and open flame.

Specification

Item	Specification
Appearance	Light brown to dark brown powder or crystalline solid
Identification (IR)	Conforms to structure
Assay (Diazotizable Amine)	Min. 95%
Water Content	Contact for details
Insoluble Matter	Max. 1.0%
Coupling Value	Contact for details

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