Description

Diamine Black Bh is a high-purity organic dye intermediate essential for the synthesis of complex colorants. Its primary value lies in its ability to impart deep, stable black hues with excellent fastness properties in various substrates. This compound is critically needed by manufacturers in the textile, leather, and specialty ink industries seeking to produce high-quality, durable black dyes and pigments.

Application

• Primary Dye Synthesis: A key intermediate in the production of acid black, direct black, and reactive black dyes for textiles and leather.
• Leather Finishing: Used in formulations for dyeing leather goods, providing deep penetration and color uniformity.
• Ink Manufacturing: Employed in the synthesis of pigments for specialty printing inks, including packaging and security inks.
• Paper Coloring: Utilized in processes requiring high-intensity black coloration for specialty papers.
• Research & Development: Serves as a building block in chemical research for developing novel chromophores and functional dyes.

Basic Information

Item	Details
Product Name	Diamine Black Bh
CAS No.	52350-22-8
Molecular Formula	Contact for details
Molecular Weight	Contact for details
Synonyms	Diamine Black BH; C.I. 35255; 4,4'-Diaminodiphenylamine-2-sulfonic acid; 4,4'-Diaminodiphenylamine-2-carboxylic acid (related derivative); Black BH Base; Benzidine Black BH (historical name); p,p'-Diaminodiphenylamine derivative; Azoic Diazo Component 22 (related classification)
EINECS	Contact for details

Quality Control

Our Diamine Black Bh is produced under a strict quality management system. Each batch undergoes rigorous analytical testing to ensure it meets precise chemical and physical specifications. A Certificate of Analysis (COA) detailing purity, identity, and impurity profiles is provided with every shipment to guarantee consistency and support your quality assurance protocols.

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). Due to its hygroscopic nature, the container must be kept tightly sealed to minimize exposure to atmospheric moisture. Keep away from incompatible materials.

Specification

Item	Specification
Appearance	Dark gray to black powder or crystals
Identification (IR)	Conforms to standard
Assay (HPLC)	≥ 98.0%
Moisture (KF)	≤ 2.0%
Ash Content	≤ 0.5%
Solubility	Soluble in alkaline water; sparingly soluble in neutral water

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