Audited Supplier
IND
518-47-8
C20h10na2o5
208-253-0
Dyestuff Intermediates
Powder
Technical
Orange-Brown
376.27 G/Mol
Store at Room Temperature
Soluble in Water (500 G/L) at 20deg
>300deg
662.6deg at 760 Mmhg (Predicted)
25 Kgs Fiber Drums
IND
Shenyang
3204120000
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 |
