Fluorescein Sodium Salt (CAS 518-47-8) C. I. 45350 Acid Yellow 73 Uranin

Model NO.
IND
EINECS
208-253-0
Type
Dyestuff Intermediates
Appearance
Powder
Quality
Technical
Colour
Orange-Brown
Molar Mass
376.27 G/Mol
Storage
Store at Room Temperature
Solubility
Soluble in Water (500 G/L) at 20deg
Melting Point
>300deg
Boiling Point
662.6deg at 760 Mmhg (Predicted)
Transport Package
25 Kgs Fiber Drums
Specification
IND
Origin
Shenyang
HS Code
3204120000
Production Capacity
1000kgs Per Month
Reference Price
$ 21.60 - 22.50
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Product Description

Fluorescein sodium salt is a disodium salt of fluorescein and a noted pH sensitive fluorophore. Fluorescein sodium salt has been utilized in studies as a drug model, as a penetrating dye and also as a fluorescein tracer. Fluorescein sodium salt has also been used  in vitro  to quantify root dentin demineralization. Additional reported uses include microscopy, as a gain medium in dye laser use and to detect latent blood stains in vitro. Solubility :Soluble in water (500 g/l) at 20° C, ethanol (slightly soluble),Insoluble in benzene, chloroform, ether. Soluble in glacial acetic acid; also soluble in alkal i hydroxides or carbonates with a bright green fluoresence appearing red by transmitted light.
Items: Specification: Results:
Purity,percent: 99% 99.5%
Maximal absorption wavelength
λ ( PH8.0), nm 		490-493 492
Quality absorption coefficient
λ(PH8.0), L/(cm·g) 		≥ 200 202
Solubility in water Passes test Passes test
Sensitivity test Passes test Passes test
Loss on drying, percent ≤ 5.0 4.80
Sulfated ash, percent ≤ 0.3 0.1
Fluorescein Sodium Salt (CAS 518-47-8) C. I. 45350 Acid Yellow 73 Uranin
Fluorescein Sodium Salt (CAS 518-47-8) C. I. 45350 Acid Yellow 73 Uranin Fluorescein Sodium Salt (CAS 518-47-8) C. I. 45350 Acid Yellow 73 Uranin Fluorescein Sodium Salt (CAS 518-47-8) C. I. 45350 Acid Yellow 73 Uranin
 

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