Description

4-[[6'-(Diethylamino)-3'-Hydroxy-3-Oxospiro[Isobenzofuran-1(3H),9'-[9H]Xanthen]-2'-Yl]Azo]-3-Hydroxynaphthalene-1-Sulphonic Acid, Sodium Salt is a high-purity, synthetic organic dye belonging to the xanthene and azo chemical classes. This compound is valued for its strong chromophoric properties and specific reactivity, making it a critical intermediate and colorant in advanced material science. It is primarily sought by manufacturers in the specialty dyes and pigments, analytical reagent, and research chemistry sectors for precise formulation work.

Application

• Specialty Dye Intermediate: A key precursor for synthesizing high-performance dyes and pigments used in inks, coatings, and plastics.
• Analytical Chemistry Reagent: Employed as a colorimetric indicator or probe in biochemical assays and diagnostic kits due to its distinct color change properties.
• Research & Development: Used in academic and industrial R&D for studying photophysical properties, developing new sensors, and creating functional materials.
• Textile Dyeing: Potential application in the dyeing of synthetic fibers where specific color fastness and shade are required.
• Laser Dye Formulations: Can be utilized in the development of tunable dye lasers and other photonic applications.
• Biological Staining: May serve as a histological or cytological stain in microscopy for visualizing cellular structures.

Basic Information

Item	Details
Product Name	4-[[6'-(Diethylamino)-3'-Hydroxy-3-Oxospiro[Isobenzofuran-1(3H),9'-[9H]Xanthen]-2'-Yl]Azo]-3-Hydroxynaphthalene-1-Sulphonic Acid, Sodium Salt
CAS No.	94231-75-1
Molecular Formula	C37H30N3NaO8S
Molecular Weight	699.70 g/mol
Synonyms	Sodium 4-[(6'-Diethylamino-3'-hydroxy-3-oxospiro[isobenzofuran-1(3H),9'-[9H]xanthen]-2'-yl)azo]-3-hydroxynaphthalene-1-sulfonate; C.I. Solvent Red 49 related sodium salt; Spiro[isobenzofuran-1(3H),9'-[9H]xanthene] azo dye; Acid Red 52 analog; Xanthene azo dye sodium salt; Fluorescein azo derivative; 94231-75-1
EINECS	Contact for details

Quality Control

Our production of this specialty chemical adheres to stringent Good Manufacturing Practice (GMP) principles to ensure batch-to-batch consistency and purity. Every lot is subjected to comprehensive analytical testing, including HPLC for purity, spectrophotometry for color strength, and elemental analysis. A detailed Certificate of Analysis (COA) documenting identity, purity, and impurity profiles is provided with each shipment to support your quality assurance protocols.

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). Due to its hygroscopic (moisture-sensitive) nature, the container must be kept sealed to prevent absorption of atmospheric moisture, which can affect product stability and performance.

Specification

Item	Specification
Appearance	Reddish-brown to dark red powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Loss on Drying	≤ 5.0%
Heavy Metals (as Pb)	≤ 20 ppm
Residue on Ignition (Sulfated Ash)	≤ 1.0%
Solubility (1% in Water)	Clear, red solution

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