Description

Rhodamine S CAS NO 72968-14-0 is a synthetic organic compound belonging to the xanthene dye class, valued for its intense fluorescence and color properties. This chemical is essential for applications requiring high-visibility marking, biological staining, and as a tracer in industrial and research settings. It is primarily sought by manufacturers in the dye and pigment, biotechnology, and analytical chemistry industries.

Application

• Fluorescent Tracer and Marker: Used in hydrology, fluid dynamics, and leak detection studies due to its high fluorescence yield.
• Biological Staining: Employed in microscopy and histology for staining cells and tissues in fluorescence-based assays.
• Dye and Pigment Intermediate: Serves as a key precursor or colorant in the production of specialty inks, paints, and plastics.
• Analytical Chemistry Reagent: Functions as a sensitive probe or indicator in spectrophotometric and fluorometric analytical methods.
• Anti-Counterfeiting Agent: Incorporated into security inks for banknotes, documents, and high-value products.
• Laser Dye: Utilized in the formulation of dyes for tunable dye lasers in research applications.

Basic Information

Product Name	Rhodamine S
CAS No.	72968-14-0
Molecular Formula	C28H31N2O3Cl
Molecular Weight	479.01 g/mol
Synonyms	Basic Violet 10; C.I. 45170; Rhodamine B base; Rhodamine B, free base; 9-(2-Carboxyphenyl)-6-(diethylamino)-3H-xanthen-3-ylidene]-diethylammonium chloride; [9-(o-Carboxyphenyl)-6-(diethylamino)-3H-xanthen-3-ylidene]diethylammonium chloride; TAMRA base; Xanthylium, 9-[2-(carboxyphenyl)-6-(diethylamino)-3H-xanthen-3-ylidene]-N,N-diethyl-, chloride
EINECS	Contact for details

Quality Control

Our Rhodamine S is produced under a strict quality management system to ensure batch-to-batch consistency and high purity. Each lot undergoes comprehensive analysis, including identity confirmation by IR spectroscopy, purity assessment by HPLC, and control of key impurities. A Certificate of Analysis (COA) detailing all test results is provided with every 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 place at a controlled room temperature (15-25°C). Due to its hygroscopic (moisture-sensitive) nature, the container must be kept tightly sealed after each use to prevent degradation from atmospheric moisture.

Specification

Item	Specification
Appearance	Dark green to purple crystalline powder
Identification (IR)	Conforms to reference spectrum
Assay (HPLC)	≥ 95.0%
Loss on Drying	≤ 2.0%
Heavy Metals (as Pb)	≤ 20 ppm
Residue on Ignition	≤ 0.5%

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