Description

Rhodamines CAS NO 67226-84-0 refers to a group of synthetic xanthene dyes known for their intense fluorescence and brilliant pink to red-violet color. These properties make them indispensable as highly sensitive colorants and fluorescent tracers across numerous industrial and research applications. Key industries that rely on these dyes include textile manufacturing, ink and toner production, biological staining, and analytical chemistry.

Application

• Textile Dyeing: Used for coloring wool, silk, and nylon, producing vibrant shades of pink and red.
• Ink & Toner Formulation: A key pigment in printing inks, stamp pad inks, and laser printer toners.
• Biological Staining & Fluorescence Microscopy: Employed as fluorescent probes for cell staining, histology, and flow cytometry.
• Industrial Tracers: Utilized to trace water flow, detect leaks, and study fluid dynamics due to high visibility at low concentrations.
• Paper & Leather Coloring: Applied in the surface coloring of specialty papers and leather goods.
• Cosmetics & Personal Care: Used as a color additive in certain cosmetic products (subject to regional regulatory approval).
• Analytical Chemistry: Serves as a pH indicator and a reagent in spectrophotometric analyses.
• Security Printing: Incorporated into security inks for banknotes and official documents due to specific fluorescence under UV light.

Basic Information

Product Name	Rhodamines
CAS No.	67226-84-0
Molecular Formula	C28H31ClN2O3 (for Rhodamine B)
Molecular Weight	479.02 g/mol (for Rhodamine B)
Synonyms	Rhodamine B; Basic Violet 10; C.I. 45170; Brilliant Pink B; Tetraethylrhodamine; [9-(2-Carboxyphenyl)-6-diethylamino-3-xanthenylidene]-diethylammonium chloride; Rhodamine 610; Acid Rhodamine B
EINECS	Contact for details

Quality Control

Our Rhodamines are produced under a stringent quality management system. Each batch undergoes comprehensive analytical testing, including HPLC for purity, spectrophotometry for color strength, and tests for heavy metal content, to ensure consistency and compliance with industry specifications. A Certificate of Analysis (COA) detailing all test results is provided with every shipment.

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 incompatible materials and sources of ignition.

Specification

Item	Specification
Appearance	Green crystalline powder or reddish-violet powder
Identification (IR)	Conforms to standard
Assay (HPLC)	≥ 95.0%
Color Strength	100 ± 5% (vs. Standard)
Loss on Drying	≤ 2.0%
Ash Content	≤ 1.0%
Heavy Metals (as Pb)	≤ 20 ppm
Solubility (in Water)	Freely soluble, clear solution

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