Description

Tetrasodium 5,5'-[Vinylenebis[(3-Sulphonato-4,1-Phenylene)Azo]]Bis(Salicylate) is a high-purity, water-soluble azo dye intermediate and functional chemical. This compound is valued for its strong chelating properties and its role as a key precursor in the synthesis of specialized dyes and pigments. It is primarily utilized by manufacturers in the textile, ink, and specialty chemical industries seeking consistent quality and reliable supply for their production processes.

Application

• Textile Dye Intermediate: A crucial precursor for synthesizing reactive and direct dyes for cotton and other cellulose fibers.
• Inkjet Ink Formulation: Used in the production of colorants for high-quality photographic and commercial inkjet inks.
• Functional Chelating Agent: Employed in water treatment and industrial cleaning formulations to sequester metal ions like calcium and magnesium.
• Paper Coloring: Serves as a component in dyes for specialty paper and packaging products.
• Biological Staining: Potential use as a staining agent in histological and microbiological applications.
• Research & Development: Used in chemical research as a model compound for studying azo dye chemistry and photophysical properties.

Basic Information

Product Name	Tetrasodium 5,5'-[Vinylenebis[(3-Sulphonato-4,1-Phenylene)Azo]]Bis(Salicylate)
CAS No.	6459-82-1
Molecular Formula	C34H20N4Na4O16S2
Molecular Weight	898.68 g/mol
Synonyms	Acid Blue 277; Tetrasodium 5,5'-[1,2-Ethenediylbis[(3-sulfo-4,1-phenylene)azo]]bis[2-hydroxybenzoate]; C.I. 612115; Direct Blue 277; 5,5'-[Vinylenebis[(3-sulfonato-4,1-phenylene)azo]]bis(salicylic acid) tetrasodium salt; Benzoic acid, 5,5'-[1,2-ethenediylbis[(3-sulfo-4,1-phenylene)azo]]bis[2-hydroxy-, tetrasodium salt
EINECS	229-265-5

Quality Control

Our Tetrasodium 5,5'-[Vinylenebis[(3-Sulphonato-4,1-Phenylene)Azo]]Bis(Salicylate) is manufactured under a strict quality management system. Every batch undergoes comprehensive analytical testing, including HPLC for purity and identity confirmation, to ensure it meets precise specifications. A Certificate of Analysis (COA) detailing all relevant parameters is provided with each shipment to guarantee traceability and compliance with your quality 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). This product is hygroscopic (moisture-sensitive); the container must be kept tightly sealed after opening to prevent absorption of atmospheric moisture, which can affect product performance.

Specification

Item	Specification
Appearance	Dark blue to violet powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Water Content (KF)	≤ 5.0%
pH (1% Solution)	7.0 - 9.0
Sulfated Ash	≤ 30.0%
Heavy Metals (as Pb)	≤ 20 ppm

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