A4718031
Fluorescein sodium salt , 70% , 518-47-8
Synonym(s):
Uranine;Sodium fluorescein;Acid Yellow 73;D&C;Yellow No. 8;Fluorescein, Sodium Salt
CAS NO.：518-47-8
Empirical Formula: C20H13NaO5
Molecular Weight: 356.31
MDL number: MFCD00167039
EINECS: 208-253-0
| Pack Size | Price | Stock | Quantity |
| 25g | RMB31.20 | In Stock |
|
| 100g | RMB63.20 | In Stock |
|
| 500g | RMB239.20 | In Stock |
|
| others | Enquire |
Update time: 2022-07-08
PRODUCT Properties
| Melting point: | 320 °C |
| Density | 0.579[at 20℃] |
| vapor pressure | 2.133hPa |
| storage temp. | Store at +5°C to +30°C. |
| solubility | H2O: soluble1mg/mL |
| Colour Index | 45350 |
| form | Powder |
| pka | 2.2, 4.4, 6.7(at 25℃) |
| color | Rust-orange |
| PH | 8.3 (10g/l, H2O, 20℃) |
| PH Range | Pink uorescence (4.0) to green uorescence (6.0) |
| Odor | Odorless |
| Water Solubility | 500 g/L (20 ºC) |
| λmax | 491nm, 493.5nm, 490nm |
| Merck | 14,4159 |
| BRN | 3833041 |
| Stability: | Stable. |
| Major Application | Nanolithography, nanoparticles, thin films, fuel cells, inks, laser, colored bubbles, cleansing products, identifying leaks in coolant, suntanning agent, hair dyes, cosmetics, dermatology, dental material, diagnosis of diabetic retinopathy, antitumor agent |
| InChIKey | NJDNXYGOVLYJHP-UHFFFAOYSA-L |
| LogP | 0.34 |
| CAS DataBase Reference | 518-47-8(CAS DataBase Reference) |
| EPA Substance Registry System | Fluorescein, disodium salt (518-47-8) |
Description and Uses
In examining subterranean waters. Serves to ascertain source of springs, connections between streams and sea, determining approx vol of water delivered by a spring, detecting source of contamination of drinking water, infiltration of soil with waste waters of factories. In externally applied drugs and cosmetics. Analytical reagent (protein label). Clinical reagent (immuno-histological stain, immuno-fluorescent label).
Safety
| Symbol(GHS) |  GHS07 |
| Signal word | Warning |
| Hazard statements | H315-H319 |
| Precautionary statements | P264-P280-P302+P352-P337+P313-P305+P351+P338-P362+P364-P332+P313 |
| Hazard Codes | Xi |
| Risk Statements | 36-36/37/38 |
| Safety Statements | 22-24/25-37/39-26-36/37/39-27 |
| WGK Germany | 1 |
| RTECS | LM5425000 |
| F | 3 |
| TSCA | Yes |
| HS Code | 32041200 |
| Hazardous Substances Data | 518-47-8(Hazardous Substances Data) |
| Toxicity | LD50 in mice, rats (mg/kg): 4738, 6721 orally (Yankel, Loux) |
