Description

Sulfonfluorescein is a high-purity, fluorescent dye derivative widely used as a critical tracer and analytical reagent. Its significance lies in its excellent water solubility and strong fluorescence properties, making it indispensable for advanced research and industrial diagnostics. This compound is essential for professionals in the life sciences, analytical chemistry, and environmental monitoring sectors who require reliable, high-performance fluorescent markers.

Application

• Fluorescent Tracer in Hydrological Studies: Used to track water flow, dispersion, and contamination in environmental and geological surveys.
• Biomolecular Labeling and Staining: Serves as a fluorescent tag for proteins, nucleic acids, and cellular components in biochemical assays and microscopy.
• Analytical Chemistry Standard: Employed as a reference standard and reagent in fluorescence spectroscopy and chromatography (HPLC) for method development and calibration.
• Membrane and Porosity Studies: Utilized to investigate pore size, permeability, and integrity in filtration membranes and biological barriers.
• Industrial Process Monitoring: Acts as a non-toxic fluorescent marker to monitor mixing efficiency, leak detection, and flow rates in various industrial systems.

Basic Information

Product Name	Sulfonfluorescein
CAS No.	4424-03-7
Molecular Formula	C20H12O7S
Molecular Weight	396.37 g/mol
Synonyms	Fluorescein sulfonate; 2-(3-Oxo-6-sulfo-3H-xanthen-9-yl)benzoic acid; 9-(o-Carboxyphenyl)-6-hydroxy-3-sulfo-3H-xanthen-3-one; Acid Yellow 73; Sulfofluorescein; Uranine S; Fluorescein-3'-sulfonic acid
EINECS	224-589-7

Quality Control

Our Sulfonfluorescein is manufactured under strict quality management systems to ensure batch-to-batch consistency and high purity. Each lot is subjected to comprehensive analytical testing, including HPLC for purity and identity confirmation via spectroscopic methods. A detailed Certificate of Analysis (COA) is provided with every shipment, documenting all relevant specifications 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 tightly sealed after opening to prevent absorption of atmospheric moisture.

Specification

Item	Specification
Appearance	Orange to red-brown powder
Identification (IR)	Conforms to reference spectrum
Purity (HPLC)	≥ 95.0%
Loss on Drying	≤ 5.0 %
Fluorescence Properties	Conforms to standard (λex/λem)
Water Solubility	Freely soluble

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