Description

Benzoic Acid, 3,3'-Methylenebis[6-[[2,4- Dihydroxy-5-[(4-Sulfonylphenyl)Azo]Phenyl]Azo]-, Sodium Salt is a high-purity, water-soluble azo dye intermediate. This compound is valued for its role in synthesizing complex, high-performance dyes and pigments with excellent color fastness and stability. It is primarily needed by manufacturers in the textile, ink, and specialty coatings industries seeking to produce vibrant and durable colors.

Application

• Primary intermediate for the synthesis of high-grade azo dyes and pigments used in textile coloration.
• Key component in manufacturing specialty inks for packaging, security printing, and digital applications.
• Used in the production of industrial coatings and paints requiring specific chromatic properties and lightfastness.
• Potential use as a colorant or intermediate in the research and development of functional materials, such as sensors or optical filters.
• Employed in the synthesis of dyes for leather and paper products.

Basic Information

Item	Detail
Product Name	Benzoic Acid, 3,3'-Methylenebis[6-[[2,4- Dihydroxy-5-[(4-Sulfonylphenyl)Azo]Phenyl]Azo]-, Sodium Salt
CAS No.	102616-51-3
Molecular Formula	Contact for details
Molecular Weight	Contact for details
Synonyms	Benzoic acid, 3,3'-methylenebis[6-[[2,4-dihydroxy-5-[(4-sulfophenyl)azo]phenyl]azo]-, sodium salt; C.I. 27290; Sodium 3,3'-methylenebis[6-[(2,4-dihydroxy-5-[(4-sulfophenyl)azo]phenyl)azo]benzoate]; Azo dye intermediate 102616-51-3; Bis-azo benzoic acid derivative sodium salt; 3,3'-Methylenebis(6-{[2,4-dihydroxy-5-(4-sulfophenylazo)phenyl]azo}benzoic acid) disodium salt
EINECS	Contact for details

Quality Control

Our production of this azo dye intermediate adheres to strict quality management systems to ensure batch-to-batch consistency and purity. Each lot is tested against established in-house specifications, which typically include identity confirmation, assay, and impurity profile analysis. A Certificate of Analysis (COA) detailing all test results is provided with every shipment to guarantee compliance with your technical requirements.

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 tightly sealed after opening to prevent absorption of atmospheric moisture, which could affect product performance.

Specification

Item	Specification
Appearance	Dark colored powder or solid
Identification (IR)	Conforms to structure
Assay (HPLC)	Min. 95%
Loss on Drying	Max. 5.0%
Heavy Metals	Max. 20 ppm
Solubility (Water)	Freely soluble

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