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

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℃)
• Odor: Odorless
• PH Range: Pink uorescence (4.0) to green uorescence (6.0)
• 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

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
• Toxicity: LD50 in mice, rats (mg/kg): 4738, 6721 orally (Yankel, Loux)