Send Message
Home ProductsIn Vitro Diagnostic Reagents

Fluorescein Sodium Salt BioReagent, Suitable For Fluorescence CAS 518-47-8

China Hunan Yunbang Biotech Inc. certification
China Hunan Yunbang Biotech Inc. certification
I'm Online Chat Now

Fluorescein Sodium Salt BioReagent, Suitable For Fluorescence CAS 518-47-8

Fluorescein Sodium Salt BioReagent, Suitable For Fluorescence CAS 518-47-8
Fluorescein Sodium Salt BioReagent, Suitable For Fluorescence CAS 518-47-8 Fluorescein Sodium Salt BioReagent, Suitable For Fluorescence CAS 518-47-8

Large Image :  Fluorescein Sodium Salt BioReagent, Suitable For Fluorescence CAS 518-47-8

Product Details:
Place of Origin: China
Brand Name: YunbangPharm
Certification: ISO9001
Model Number: YB065
Payment & Shipping Terms:
Minimum Order Quantity: Negotiable
Price: Negotiable
Packaging Details: 1kg/Bottle, 5-25kg/Drum
Delivery Time: 5-8 working days
Payment Terms: L/C, D/A, D/P, T/T, Western Union
Supply Ability: 10Ton/Month

Fluorescein Sodium Salt BioReagent, Suitable For Fluorescence CAS 518-47-8

Product Name: Fluorescein Sodium Salt Cas No: 518-47-8
Molecular Formula: C20H13NaO5 Purity: 99%
Classification: Biological Buffer Colour: Rust-orange
Solubility: 500 G/L (20 ºC) EINECS NO: 208-253-0
High Light:

Fluorescein Sodium Salt BioReagent


Biological Buffers CAS 518-47-8

Fluorescein sodium salt BioReagent, suitable for fluorescence CAS 518-47-8

1:Can I get some samples before bulk order?
A: Most products provide free samples, but the shipping cost be paid by customers.
2: What's your MOQ?
A: We can have a discussion.
3: Which kind of payment terms do you accept?
A: PI will be sent first after confirmation of order,enclosed our bank information.Payment by T/T, Western Union,D/P, ETC.
4.How to place an order?
A: You can contact me through Trademanager, WhatsApp, Email and other contact methods, tell me the product and quantity you need, and then we will give you a quote.
5:How about your delivery time?
A: Generally, it will take 3 to 5 days after receiving your advance payment.
6:How do you treat quality complaint?
A: First of all, our quality control will reduce the quality problem to near zero. If there is a real quality problem caused by us, we will send you free goods for replacement or refund your loss.


General description

Fluorescein Sodium Salt (FSS) is a xanthene dye having a polycrystalline structure with a monoclinic system. Fluorescein is a synthetic organic compound available as a dark orange/red powder soluble in water and alcohol.



Fluorescein Sodium Salt (FSS) is used to conduct in-vivo skin studies.

Xanthene fluorophores, like Fluorescein Sodium Salt (FSS), are versatile compounds used across diverse fields of chemistry and life sciences.


Product Name: Fluorescein Sodium
Synonyms: 9-(o-carboxyphenyl)-6-hydroxy-3h-xanthen-3-one,disodiumsalt;9’-(9h)xanthen)-3-one,3’,6’-dihydroxy-spiro(isobenzofuran-1(3hdisodiums;9’-[9h]xanthen]-3-one,3’,6’-dihydroxy-spiro[isobenzofuran-1(3hdisodiumsal;9-o-carboxyphenyl-6-hydroxy-3-isoxanthone,disodiumsalt;abcoluraninepowders&liquids;aizenuranine;c.i.45350disodiumsalt;c.i.45350sodiumsalt
CAS: 518-47-8
MF: C20H13NaO5
MW: 356.31
EINECS: 208-253-0
Product Categories: Fluorescent;Xanthene;Intermediates of Dyes and Pigments;Dyes and Pigments;Pharmaceutical intermediates;518-47-8
Mol File: 518-47-8.mol
Fluorescein Sodium Structure
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
form Powder
pka 2.2, 4.4, 6.7(at 25℃)
Colour Index 45350
color Rust-orange
PH Range Pink uorescence (4.0) to green uorescence (6.0)
PH 8.3 (10g/l, H2O, 20℃)
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
LogP 0.34
CAS DataBase Reference 518-47-8(CAS DataBase Reference)
EPA Substance Registry System Fluorescein, disodium salt (518-47-8)
Chemical Properties Orange-red powder; odorless. Hygroscopic, soluble in water; sparingly soluble in alcohol.
Uses Fluorescein sodium salt is a sodium salt of fluorescein. It can also be used in technical or engineered material use in-situ photochemical fabrication of transition metal-?promoted amorphous molybdenum sulfide catalysts for enhanced photosensitized hydrogen evolution. Dyes and metabolites, Environmental Testing
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).
General Description Fluorescein sodium is an orange-red to dark red powder. Water-soluble form of fluorescein. Odorless and almost tasteless. pH (5% solution) 7.8. May be sensitive to prolonged exposure to light and to heat.
Air & Water Reactions Hygroscopic. Water soluble.
Reactivity Profile Fluorescein disodium salt is incompatible with strong oxidizers. Also incompatible with acids, acid salts and salts of heavy metals .
Fire Hazard Flash point data for Fluorescein disodium salt are not available; however, Fluorescein disodium salt is probably combustible.
Safety Profile Moderately toxic by intraperitoneal route. Mildly toxic by ingestion. Human systemic effects by intravenous route: arrhythmias, eye hemorrhage, nausea or vomiting. Experimental reproductive effects. Questionable carcinogen with experimental tumorigenic data. Mutation data reported. When heated to decomposition it emits toxic fumes of Na2O.
Veterinary Drugs and Treatments Fluorescein sodium is a yellow water-soluble dye that fluoresces under a Wood’s Lamp, but is plainly visible after binding to corneal stroma through an ophthalmic examination light source. It is used most commonly to delineate full thickness loss of corneal epithelium indicating the presence of a corneal ulceration. In this instance it will stain the corneal stroma. The epithelium is not stained because its outer lipid cell membrane repels the stain. Descemet’s membrane will not stain with fluorescein stain and this is used to indicate descemetocele formation, an ocular emergency.
Fluorescein stain is applied to the precorneal tear film in dogs and cats and the break-up of this stain with time, as observed through a slit lamp biomicroscope using a cobalt blue light source, is used to determine the tear film break-up time (normal 19 seconds), an indicator of tear film quality.
Fluorescein stain is applied to the tear film of dogs to determine patency of the nasolacrimal outflow system. The normal wait time is 2 – 5 minutes in dogs and up to 10 minutes in cats. A positive test indicates patency of the system. A negative test is not indicative of disease as the test is negative in a large percentage of normal animals. Fluorescein stain, then, can be added to irrigating solution to flush the nasolacrimal system, making detecting the irrigation solution at the nose more obvious during flushing of the system.
Properties and Applications brilliant yellow. Soluble in water and ethanol (with strong green fluorescent), water-soluble good. In strong sulfuric acid with weak for fluorescence yellow, it will be diluted with yellow precipitation. Its water solution and sodium hydroxide with dark green fluorescence for brunet solution. Mainly used for sea of target that fluorescent, facilitate aerial reconnaissance search. And can use significantly for the exploration of fluorescent groundwater. Can also be used for medicine and cosmetics shading, rarely used for silk printing and dyeing things.


Fluorescein Sodium Salt BioReagent, Suitable For Fluorescence CAS 518-47-8 1


Fluorescein Sodium Salt BioReagent, Suitable For Fluorescence CAS 518-47-8 2


Fluorescein Sodium Salt BioReagent, Suitable For Fluorescence CAS 518-47-8 3











Fluorescein Sodium Salt BioReagent, Suitable For Fluorescence CAS 518-47-8 4




















Contact Details
Hunan Yunbang Biotech Inc.

Contact Person: Maggie Ma

Tel: +0086 188 7414 9531

Send your inquiry directly to us (0 / 3000)