Description

8-Hydroxy-7-((4-Sulfo-1-Naphthyl)Azo)Quinoline-5-Sulfonic Acid is a high-purity azo dye intermediate and analytical reagent known for its strong chelating properties and vivid color formation. This compound is critical for ensuring precise colorimetric detection and consistent coloration in advanced manufacturing processes. It is primarily required by manufacturers in the analytical chemistry, specialty dye, and metal detection reagent sectors.

Application

• Analytical Reagent: Used as a sensitive colorimetric indicator for the detection and quantification of specific metal ions, particularly in laboratory and industrial quality control settings.
• Dye Intermediate: Serves as a key precursor in the synthesis of complex azo dyes and pigments for textiles, inks, and specialty coatings.
• Chelating Agent: Employed in research and processes requiring selective metal ion binding and sequestration.
• Photographic Chemicals: Utilized in the formulation of certain light-sensitive layers and color development processes.
• Biochemical Research: Applied in histology and staining procedures for microscopic analysis.
• Sensor Technology: Incorporated into chemical sensors and test strips for environmental or diagnostic monitoring.

Basic Information

Product Name	8-Hydroxy-7-((4-Sulfo-1-Naphthyl)Azo)Quinoline-5-Sulfonic Acid
CAS No.	117-87-3
Molecular Formula	C19H11N3O7S2
Molecular Weight	457.43 g/mol
Synonyms	Acid Chrome Blue K; Solochrome Dark Blue B; C.I. Mordant Blue 29; 8-Hydroxy-7-[(4-sulfo-1-naphthalenyl)azo]-5-quinolinesulfonic acid; 7-[(4-Sulfo-1-naphthyl)azo]-8-hydroxyquinoline-5-sulfonic acid; Mordant Blue 29; Chrome Blue K; Acid Chrome Blue
EINECS	204-219-3

Quality Control

Our 8-Hydroxy-7-((4-Sulfo-1-Naphthyl)Azo)Quinoline-5-Sulfonic Acid is manufactured under strict quality management systems. Each batch undergoes rigorous analytical testing to ensure it meets precise specifications for identity, purity, and performance. A comprehensive Certificate of Analysis (COA) detailing assay, impurity profile, and physical characteristics is provided with every shipment to guarantee traceability and compliance with your application requirements.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at room temperature (15-25°C). Keep away from strong oxidizing agents and incompatible materials. The product is light-sensitive and should be stored away from light.

Specification

Item	Specification
Appearance	Dark brown to reddish-brown powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Loss on Drying	≤ 2.0%
Sulfated Ash	≤ 0.5%
Heavy Metals (as Pb)	≤ 20 ppm
Solubility (1% in Water)	Complete, clear solution

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