Description

Dipotassium (1,1'-Biphenyl)-4,4'-Disulfate is a high-purity, water-soluble salt of biphenyl-4,4'-disulfonic acid. This compound serves as a critical intermediate and functional additive in advanced material synthesis and specialty chemical manufacturing. It is essential for industries requiring precise chemical building blocks for the production of dyes, optical brighteners, and performance polymers. Our global supply ensures consistent quality and reliable availability for your production needs.

Application

• Dye and Pigment Intermediate: A key precursor in the synthesis of sulfonated azo dyes and optical brighteners (fluorescent whitening agents).
• Polymer and Resin Modification: Used to introduce sulfonate groups into polymer chains, enhancing hydrophilicity, dyeability, or ion-exchange properties.
• Electroplating and Surface Treatment: Acts as a brightening agent or additive in electroplating baths for metal finishing.
• Pharmaceutical Synthesis: Serves as a sulfonation reagent or building block in the manufacture of certain active pharmaceutical ingredients (APIs).
• Liquid Crystal and OLED Material Production: Utilized in the synthesis of sulfonated organic compounds for electronic display technologies.
• Analytical Chemistry and Research: Employed as a standard or reagent in chemical research and development laboratories.

Basic Information

Product Name	Dipotassium (1,1'-Biphenyl)-4,4'-Disulfate
CAS No.	15807-67-7
Molecular Formula	C12H8K2O8S2
Molecular Weight	422.53 g/mol
Synonyms	Biphenyl-4,4'-disulfonic acid dipotassium salt; 4,4'-Biphenyldisulfonic acid dipotassium salt; Dipotassium 4,4'-biphenyldisulfonate; Dipotassium biphenyl-4,4'-disulfonate; [1,1'-Biphenyl]-4,4'-disulfonic acid, dipotassium salt; Kalium-4,4'-biphenyldisulfonat (German); 4,4'-ビフェニルジスルホン酸二カリウム塩 (Japanese)
EINECS	Contact for details

Quality Control

Our Dipotassium (1,1'-Biphenyl)-4,4'-Disulfate is manufactured under a strict quality management system. Every batch undergoes rigorous 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 provided and available upon request to support your quality assurance and regulatory compliance 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). This product is hygroscopic (moisture-sensitive). Keep the container tightly sealed when not in use to prevent absorption of atmospheric moisture, which may affect product quality and handling properties.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Water Content (KF)	≤ 2.0%
Heavy Metals (as Pb)	≤ 20 ppm
Residue on Ignition	Contact for details
Solubility (in Water)	Clear, colorless solution

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