Description

Rhodamine B is a highly fluorescent, water-soluble xanthene dye widely recognized for its brilliant pink-red color and excellent photostability. Its primary value lies in its intense fluorescence, making it an indispensable tracer and staining agent across numerous scientific and industrial fields. This compound is essential for professionals in the biotechnology, analytical chemistry, and manufacturing sectors who require reliable, high-performance colorants for detection, labeling, and quality control processes. Rhodamine B CAS NO 81-88-9 is supplied to meet the stringent demands of research and industrial applications.

Application

• Fluorescent Tracer and Dye: Used in hydrology to trace water flow and in engineering to visualize fluid dynamics.
• Biological Staining: Employed in fluorescence microscopy for cell and tissue staining, often in combination with other dyes.
• Laser Dye: Serves as an active medium in tunable dye lasers, particularly in the yellow-red spectral region.
• Industrial Colorant: Imparts vibrant color to papers, textiles, and certain types of inks and paints.
• Analytical Reagent: Functions as a sensitive reagent for the spectrophotometric determination of various metal ions.
• Safety and Security Inks: Utilized in the formulation of invisible security inks for anti-counterfeiting applications.

Basic Information

Product Name	Rhodamine B
CAS No.	81-88-9
Molecular Formula	C28H31ClN2O3
Molecular Weight	479.02 g/mol
Synonyms	Basic Violet 10; C.I. 45170; Rhodamine B chloride; Brilliant Pink B; Tetraethylrhodamine; [9-(2-Carboxyphenyl)-6-(diethylamino)-3H-xanthen-3-ylidene]diethylammonium chloride; Aizen Rhodamine B; RhB
EINECS	201-383-9

Quality Control

Our Rhodamine B is manufactured under a strict quality management system. Every batch undergoes comprehensive analytical testing, including HPLC for purity, spectrophotometry for color value, and loss on drying. We provide a detailed Certificate of Analysis (COA) with each shipment, ensuring traceability and compliance with your technical specifications. For specialized applications, we can tailor quality parameters to meet specific research or industrial grade requirements.

Storage

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

Specification

Item	Specification
Appearance	Green crystalline powder or reddish-violet powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Loss on Drying	≤ 5.0 %
Fluorescence	Strong red fluorescence in solution
Solubility	Freely soluble in water and ethanol

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