Description

Disodium 5-[(2,5-Dichloro-4-Sulphonatophenyl)Azo]Salicylate is a high-purity, water-soluble azo dye intermediate and analytical reagent. This compound is valued for its consistent chromophore structure and reliable performance in demanding synthesis and detection processes. It is primarily required by manufacturers in the dye and pigment, analytical chemistry, and specialty chemical sectors for precise colorant production and as a key reagent.

Application

• Primary intermediate for the synthesis of acid dyes and reactive dyes used in textile coloring.
• Key chromophore component in the manufacturing of pigments and lakes for inks and coatings.
• Used as a colorimetric reagent and indicator in analytical chemistry and laboratory testing.
• Employed in the research and development of novel functional dyes for non-textile applications.
• Potential use as a tracer or marker dye in selected industrial and environmental studies.

Basic Information

Product Name	Disodium 5-[(2,5-Dichloro-4-Sulphonatophenyl)Azo]Salicylate
CAS No.	6527-54-4
Molecular Formula	C13H7Cl2N2Na2O6S
Molecular Weight	452.15 g/mol
Synonyms	5-[(2,5-Dichloro-4-sulfophenyl)azo]salicylic acid disodium salt; C.I. Mordant Yellow 5; Acid Yellow 99; Disodium 5-[(2,5-dichloro-4-sulfonatophenyl)azo]salicylate; Mordant Yellow 5; Alizarine Yellow GG; 2-Hydroxy-5-[(2,5-dichloro-4-sulfophenyl)azo]benzoic acid disodium salt
EINECS	229-419-5

Quality Control

Our production of Disodium 5-[(2,5-Dichloro-4-Sulphonatophenyl)Azo]Salicylate adheres to stringent in-process controls to ensure batch-to-batch consistency and high purity. The material is characterized and tested against established internal specifications. A comprehensive Certificate of Analysis (COA) detailing identity, purity, and impurity profiles is provided with each shipment and is available upon request.

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 nature, the container must be kept tightly sealed after opening to prevent moisture absorption, which can affect product performance.

Specification

Item	Specification
Appearance	Orange to reddish-brown powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Loss on Drying	≤ 5.0%
Heavy Metals (as Pb)	≤ 20 ppm
Water Solubility	Clear solution

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