Description

N,N,N',N'-Tetrabenzyl-4,4'-Diaminostilbene-2,2'-Disulfonate is a high-purity, functionalized stilbene derivative with significant industrial utility. This compound is valued for its role as a key intermediate in the synthesis of advanced materials and specialty chemicals. It is primarily sought by manufacturers in the optical brightening agents (OBAs), polymer additives, and specialty dye sectors, where its unique molecular structure enables precise performance characteristics.

Application

• Optical Brightening Agent (OBA) Intermediate: A critical precursor in the synthesis of high-performance fluorescent whitening agents for paper, textiles, and plastics.
• Polymer Additive Synthesis: Used to manufacture light-stabilizing and UV-absorbing additives for engineering polymers and coatings.
• Specialty Dye & Pigment Production: Serves as a building block for creating novel dyes with specific color-fastness and fluorescence properties.
• Liquid Crystal & OLED Material Research: Employed in the development of organic electronic materials due to its conjugated stilbene core.
• Biochemical & Diagnostic Reagents: Utilized in the preparation of fluorescent probes and markers for analytical applications.
• Cross-linking Agent: Functions as a reactive intermediate in the production of specialty resins and cross-linked polymer networks.

Basic Information

Product Name	N,N,N',N'-Tetrabenzyl-4,4'-Diaminostilbene-2,2'-Disulfonate
CAS No.	138847-94-6
Molecular Formula	C46H40N2O6S2
Molecular Weight	781.0 g/mol
Synonyms	4,4'-Diaminostilbene-2,2'-disulfonic acid, N,N,N',N'-tetrabenzyl-; Tetrabenzyl DAS; TB-DAS; 4,4'-Bis(benzylamino)stilbene-2,2'-disulfonic acid derivative; Stilbene disulfonate tetrabenzyl derivative; Fluorescent brightener intermediate 138847-94-6; N,N,N',N'-Tetrabenzyl-DAS
EINECS	Contact for details

Quality Control

Our N,N,N',N'-Tetrabenzyl-4,4'-Diaminostilbene-2,2'-Disulfonate is produced under a stringent quality management system. Each batch undergoes rigorous analytical testing, including HPLC for purity and identity confirmation, to ensure consistent quality and compliance with customer specifications. Comprehensive Certificates of Analysis (COA) detailing all test results are provided with every shipment.

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). This material is hygroscopic (moisture-sensitive); keep the container tightly sealed to minimize exposure to atmospheric humidity.

Specification

Item	Specification
Appearance	Yellow to light brown powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Loss on Drying	≤ 2.0%
Residue on Ignition	≤ 0.5%
Heavy Metals (as Pb)	≤ 20 ppm

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