Description

6-Hydroxy-5-(1-Naphthalenylazo)-2-Naphthalenesulfonic Acid Sodium Salt is a high-purity azo dye intermediate and analytical reagent. This compound is valued for its strong chromophoric properties and its role as a key building block in the synthesis of specialized dyes and pigments. It is primarily required by manufacturers in the dyestuff, textile, and analytical chemistry industries for producing vibrant colors and as a reagent in specific colorimetric assays.

Application

• Dye and Pigment Intermediate: A crucial precursor for synthesizing acid dyes, direct dyes, and solvent dyes used in textiles, leather, and paper.
• Analytical Reagent: Employed in laboratory settings as a colorimetric indicator or complexometric agent for the detection and quantification of specific metal ions.
• Biological Staining: Used in the preparation of histological stains for microscopy in life science research.
• Ink Formulation: A component in the manufacture of specialized inks requiring specific color fastness and solubility properties.
• Research & Development: Serves as a standard or starting material in chemical research for developing new chromogenic compounds and materials.

Basic Information

Product Name	6-Hydroxy-5-(1-Naphthalenylazo)-2-Naphthalenesulfonic Acid Sodium Salt
CAS No.	5864-86-8
Molecular Formula	C₂₀H₁₃N₂NaO₄S
Molecular Weight	400.38 g/mol
Synonyms	Acid Orange 20; C.I. 14600; 1-Naphthaleneazoresorcinolsulfonic Acid Sodium Salt; Sodium 6-Hydroxy-5-(1-naphthylazo)-2-naphthalenesulfonate; Resorcinol Yellow; Tropaeolin O; Orange I; C.I. Acid Orange 20
EINECS	227-515-5

Quality Control

Our production of 6-Hydroxy-5-(1-Naphthalenylazo)-2-Naphthalenesulfonic Acid Sodium Salt adheres to stringent quality management protocols. Every batch undergoes comprehensive analytical testing, including HPLC for purity and identity confirmation, to ensure consistency and compliance with customer specifications. A Certificate of Analysis (COA) detailing all test results is provided with each shipment to guarantee traceability and quality assurance.

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 material is hygroscopic (moisture-sensitive); keep the container tightly sealed to minimize exposure to atmospheric humidity.

Specification

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

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