Description

8,8'-(Carbonylbis(Imino(1,1'-Biphenyl)-4',4-Diylcarbonylimino))Bis-1,3,5-Naphthalenetrisulfonic Acid, Hexasodium Salt is a high-purity, water-soluble organic dye intermediate characterized by its complex polyaromatic structure and multiple sulfonate groups. This compound is valued for its ability to impart strong color and specific functional properties in advanced material formulations. It is primarily sought after by manufacturers in the specialty dyes, optical materials, and analytical reagent sectors for creating high-performance products.

Application

• Specialty Dye and Pigment Synthesis: Serves as a key precursor for manufacturing high-value azo and polycyclic dyes.
• Optical Brighteners and Fluorescent Agents: Used in the production of compounds for paper, textiles, and detergent formulations.
• Biochemical Staining and Histology: Acts as an intermediate for developing stains used in microscopy and diagnostic applications.
• Liquid Crystal Display (LCD) Materials: Employed in the synthesis of dyes for color filters in display technologies.
• Analytical Chemistry Reagents: Utilized as a standard or intermediate for chelating agents and indicators.
• Polymer Modification: Incorporated to introduce sulfonate functionality and color into specialty polymers and resins.

Basic Information

Product Name	8,8'-(Carbonylbis(Imino(1,1'-Biphenyl)-4',4-Diylcarbonylimino))Bis-1,3,5-Naphthalenetrisulfonic Acid, Hexasodium Salt
CAS No.	111129-59-0
Molecular Formula	C53H30N6Na6O19S6
Molecular Weight	Approx. 1380.1 g/mol
Synonyms	Hexasodium 8,8'-[carbonylbis[imino(1,1'-biphenyl)-4',4-diyldicarbonylimino]]bis-1,3,5-naphthalenetrisulfonate; Direct Black 22 (related dye class); C.I. 35435; Acid Black 22 intermediate; Azo dye intermediate; Trisulfonated naphthalene derivative; Polyaromatic sulfonic acid salt
EINECS	Contact for details

Quality Control

Our production of 8,8'-(Carbonylbis(Imino(1,1'-Biphenyl)-4',4-Diylcarbonylimino))Bis-1,3,5-Naphthalenetrisulfonic Acid, Hexasodium Salt adheres to stringent quality management protocols. Every batch undergoes comprehensive analytical testing, including HPLC for purity, spectrophotometry for color value, and elemental analysis, to ensure consistency and meet precise customer specifications. Certificates of Analysis (COA) documenting identity, purity, and impurity profiles are provided with each shipment.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at a controlled room temperature (15-25°C). Due to its hygroscopic nature, the container must be kept tightly sealed to prevent moisture absorption, which can affect product stability and performance. Keep away from incompatible materials.

Specification

Item	Specification
Appearance	Dark brown to black powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Loss on Drying	≤ 5.0%
Sulfonate Content	Contact for details
Heavy Metals (as Pb)	≤ 20 ppm
Solubility (in Water)	Clear solution

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