Description

7-Hydroxy-8-[(4-Sulpho-1-Naphthyl)Azo]Naphthalene-1,3-Disulphonic Acid, Potassium Sodium Salt is a high-purity, water-soluble azo dye intermediate and analytical reagent. This compound is valued for its strong chromophoric properties and ability to form stable complexes with various metal ions, making it a critical component in specialized colorant synthesis and chemical analysis. It is primarily required by manufacturers in the dye and pigment industry, as well as by research laboratories for use as a metallochromic indicator and in the development of advanced sensor materials.

Application

• Primary Intermediate for the synthesis of specific acid dyes and reactive dyes used in textile coloring.
• Metallochromic Indicator in complexometric titrations for the detection and quantification of metal ions such as aluminum, magnesium, and rare earth elements.
• Chemical Reagent in analytical chemistry for the colorimetric determination of trace metals in environmental and industrial samples.
• Precursor for the manufacture of specialized pigments and lake colors with enhanced lightfastness.
• Research & Development tool in material science for creating novel optical sensors and functional dyes.
• Laboratory Standard for calibrating analytical instruments and validating test methods in quality control laboratories.

Basic Information

Product Name	7-Hydroxy-8-[(4-Sulpho-1-Naphthyl)Azo]Naphthalene-1,3-Disulphonic Acid, Potassium Sodium Salt
CAS No.	83006-79-5
Molecular Formula	C20H11KxNayN2O10S3 (x+y=3)
Molecular Weight	Approx. 600-650 g/mol (Contact for exact composition)
Synonyms	Acid Orange 20 (C.I. 14630); 7-Hydroxy-8-[(4-sulfo-1-naphthalenyl)azo]-1,3-naphthalenedisulfonic acid, potassium sodium salt; Mordant Orange 6; Alizarin Yellow R; Alizarin Yellow RW; 1,3-Naphthalenedisulfonic acid, 7-hydroxy-8-[(4-sulfo-1-naphthyl)azo]-, potassium sodium salt; Potassium sodium 7-hydroxy-8-[(4-sulfo-1-naphthyl)azo]naphthalene-1,3-disulfonate
EINECS	Contact for details

Quality Control

Our production of 7-Hydroxy-8-[(4-Sulpho-1-Naphthyl)Azo]Naphthalene-1,3-Disulphonic Acid, Potassium Sodium Salt adheres to stringent quality management protocols. Every batch undergoes rigorous analytical testing, including HPLC for purity, spectrophotometry for color strength, and titration for assay confirmation, to ensure consistency and compliance with technical grade specifications. Certificates of Analysis (COA) detailing purity, impurity profile, and physical characteristics are provided with each shipment to guarantee traceability and support your quality assurance processes.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at a controlled room temperature (15-25°C). This product is hygroscopic (moisture-sensitive); 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)	Min. 95%
Loss on Drying	Max. 5.0%
Sulfated Ash	Contact for details
Solubility (in Water)	Freely soluble
Heavy Metals (as Pb)	Max. 20 ppm

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