Description

Sodium 2-[3-(4-Sulfonato-o-Tolyliminio)-6-o-Toluidino-3H-Xanthen-9-Yl]Benzoate is a high-purity, water-soluble xanthene dye salt, also known as Acid Red 52, valued for its intense and stable color properties. This compound is essential for industries requiring precise and vivid coloration in specialized applications. It is primarily utilized by manufacturers in the dyeing, biological staining, and analytical chemistry sectors.

Application

• Textile Dyeing: Used as a key colorant for dyeing synthetic fibers like nylon and silk, providing bright, wash-fast shades.
• Biological Staining: Serves as a fluorescent stain or counterstain in histology and cytology for microscopic analysis.
• Ink Formulation: A component in the manufacture of specialized inks for pens, printers, and security applications.
• Indicator Chemistry: Employed in the synthesis of pH indicators and other diagnostic reagents for laboratory use.
• Cosmetic Colorant: Used in select cosmetic products where a specific, stable red hue is required (subject to regional regulatory approval).
• Research & Development: A crucial reagent in chemical research for photochemical studies and as a model compound in dye chemistry.

Basic Information

Product Name	Sodium 2-[3-(4-Sulfonato-o-Tolyliminio)-6-o-Toluidino-3H-Xanthen-9-Yl]Benzoate
CAS No.	6252-78-4
Molecular Formula	C33H25N2NaO5S
Molecular Weight	584.62 g/mol
Synonyms	Acid Red 52; C.I. 45100; Sulforhodamine B; Xylene Red B; Brilliant Acid Red B; Sodium Sulforhodamine B; 2-[6-(Dimethylamino)-3-(dimethyliminio)-3H-xanthen-9-yl]benzenesulfonate (related structure); Lissamine Rhodamine B
EINECS	228-408-3

Quality Control

Our Sodium 2-[3-(4-Sulfonato-o-Tolyliminio)-6-o-Toluidino-3H-Xanthen-9-Yl]Benzoate is produced under a strict quality management system. Each batch undergoes comprehensive analytical testing to ensure identity, purity, and performance consistency. Certificates of Analysis (COA) detailing purity, absorbance, and heavy metal content are available for all commercial shipments 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.

Specification

Item	Specification
Appearance	Dark red to reddish-brown powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 85.0% (Dye content)
Loss on Drying	≤ 8.0 %
Absorbance (λ max)	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.