
| Item | Specification |
| Melting point | 320°C |
| Boiling point | 620.8°C at 760 mmHg |
| Density | 0.579 [at 20°C] |
| Bulk density | 600 kg/m³ |
| Vapor pressure | 2.133 hPa |
| Flash point | 232.6°C |
| Color index | 45350 |
| Acid dissociation constants (pKa) | 2.2, 4.4, 6.7 (at 25°C) |
| Maximum excitation wavelength | 491 nm |
| Maximum emission wavelength | 515 nm |
| Solubility | Highly soluble in water (solubility approx. 500 g/L at 20°C), soluble in ethanol, slightly soluble in acetone, insoluble in diethyl ether and chloroform. |
| Stability | Sensitive to light; decomposes easily under UV and blue light; stable at room temperature; store in a sealed container away from light. |
Medical Diagnostics:
-Fluorescein Sodium is used for testing corneal injuries, ulcers, foreign bodies, and tear secretion, as well as for fundus fluorescein angiography (FFA) to diagnose retinal diseases
-Serves as a diagnostic reagent for renal function and urinary tract patency; fluorescence can be detected in urine following intravenous injection;
-Uranine is used in surgical procedures to identify the lymphatic system and the boundaries of tumor tissue;
Biomedical Research:
-Used in studies evaluating the permeability of the blood-brain barrier (BBB) and blood-spinal cord barrier (BSCB)
-Used for staining and tracing cells, chromosomes, and bacteria, and for studying cell migration and metabolism;
-Used as a model to study drug distribution and pharmacokinetics
Industrial and Environmental Applications:
-Uranine is used for leak detection in piping systems, cooling systems, and seals, as well as a tracer to study water flow paths and residence times
-Acid Yellow 73 is used for fluorescent whitening/marking of paper and textiles, as well as fluorescent labeling in sunscreen products and hair dyes
Other Applications:
Used for fluorescent microscopy of biological samples and as a fluorescent probe for developing pH and ion concentration sensors
Jinan Jinbang Chemical Co., Ltd., strategically located within the New Materials Industrial Park in Tianqiao District, Jinan City, Shandong Province, stands as a prominent chemical innovator since its establishment in 2015. Operating from a modern, expansive 37,500 m² manufacturing facility, we are dedicated to the research & development, production, and global distribution of high-performance chemical solutions.
We are always committed to delivering optimal chemical solutions for all application scenarios.