Description

4,4'-Dianilino-1,1'-binaphthyl-5,5'-disulfonic acid dipotassium salt is a high-purity, water-soluble organic salt characterized by its binaphthyl backbone and sulfonic acid groups. This compound matters as a critical intermediate and functional dye precursor in advanced chemical synthesis, offering excellent solubility and reactivity. It is primarily needed by manufacturers in the specialty dyes, pigments, and liquid crystal display (LCD) industries for producing high-performance optical materials and colorants.

Application

• Precursor for Functional Dyes and Pigments: Serves as a key intermediate in synthesizing naphthalene-based dyes for textiles, inks, and plastics.
• Liquid Crystal (LC) Material Synthesis: Used in the production of optically active compounds and charge-transport materials for LCD displays.
• Fluorescent Probe and Sensor Development: Its conjugated structure makes it suitable for creating chemical sensors and bio-imaging agents.
• Electrochromic and Photochromic Materials: Applied in research and development of smart windows and optical switching devices.
• Polymer Modification: Can be incorporated into polymers to impart sulfonate functionality, enhancing hydrophilicity or ionic conductivity.
• Analytical Chemistry Reagent: Potential use as a chiral selector or a complexing agent in separation sciences.

Basic Information

Product Name	4,4'-Dianilino-1,1'-Binaphthyl-5,5'-Disulfonic Acid Dipotassium Salt
CAS No.	65664-81-5
Molecular Formula	C32H22K2N2O6S2
Molecular Weight	672.92 g/mol
Synonyms	Dipotassium 4,4'-dianilino-1,1'-binaphthyl-5,5'-disulfonate; 5,5'-Disulfo-4,4'-dianilino-1,1'-binaphthyl Dipotassium Salt; 1,1'-Binaphthyl-5,5'-disulfonic acid, 4,4'-dianilino-, dipotassium salt; BINOL-based disulfonate salt; Dianilino-binaphthyldisulfonate dipotassium
EINECS	Contact for details

Quality Control

Our 4,4'-Dianilino-1,1'-binaphthyl-5,5'-disulfonic acid dipotassium salt is produced under a strict quality management system. Every batch undergoes comprehensive analytical testing, including HPLC for purity and identity confirmation, to ensure it meets precise customer specifications. Certificates of Analysis (COA) documenting all critical parameters are available upon request to support your quality assurance and regulatory needs.

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 (moisture-sensitive) nature, the container must be kept sealed to prevent absorption of atmospheric moisture.

Specification

Item	Specification
Appearance	Yellow to brownish-yellow powder
Identification (IR)	Conforms to structure
Purity (HPLC)	≥ 95.0%
Water Content (KF)	≤ 5.0%
Residue on Ignition	≤ 1.0%
Heavy Metals (as Pb)	≤ 20 ppm

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