Description

5-[(7-Sulpho-1-Naphthyl)Azo]Salicylic Acid, Sodium Salt is a high-purity azo dye intermediate and analytical reagent known for its distinct chromophoric properties. This compound is critical for producing vivid, stable colorants and serves as a sensitive chelating agent in various detection methodologies. It is primarily required by manufacturers in the dye and pigment industry, as well as by laboratories developing colorimetric assays and metal ion indicators.

Application

• Primary intermediate for the synthesis of acid dyes and pigments, particularly for textiles and leather.
• Key component in the formulation of specialized analytical reagents for the colorimetric detection of metal ions.
• Used in the production of inks and toners requiring specific light-fastness and chemical stability.
• Employed as a staining agent in biological and histological research applications.
• Potential use as a catalyst or ligand in specialized organic synthesis processes.
• Functional additive in the development of sensors and diagnostic test strips.

Basic Information

Product Name	5-[(7-Sulpho-1-Naphthyl)Azo]Salicylic Acid, Sodium Salt
CAS No.	94109-82-7
Molecular Formula	C17H11N2NaO6S
Molecular Weight	394.33 g/mol
Synonyms	Acid Orange 127; C.I. 26520; 5-[(7-Sulfo-1-naphthalenyl)azo]salicylic acid sodium salt; 7-(2-Carboxy-4-hydroxyphenylazo)-1,3-naphthalenedisulfonic acid monosodium salt; 5-[(7-Sulfo-1-naphthyl)azo]salicylic acid sodium salt; Mordant Orange 6; Sodium 5-[(7-sulphonato-1-naphthyl)azo]salicylate
EINECS	Contact for details

Quality Control

Our 5-[(7-Sulpho-1-Naphthyl)Azo]Salicylic Acid, Sodium Salt is manufactured under a strict quality management system. Every batch undergoes comprehensive analytical testing to ensure identity, purity, and consistency meet the high standards required for industrial and laboratory use. A detailed Certificate of Analysis (COA) documenting purity, assay, and impurity profiles is provided with each shipment.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at a controlled room temperature (15-25°C). Due to its hygroscopic (moisture-sensitive) nature, the container must be kept tightly sealed after each use to prevent absorption of atmospheric moisture, which can affect product performance and stability.

Specification

Item	Specification
Appearance	Orange to reddish-brown powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Loss on Drying	≤ 5.0%
Sulfated Ash	Contact for details
Heavy Metals (as Pb)	≤ 20 ppm
Solubility (in Water)	Freely soluble

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