Fluorescein disodium salt, pure

Supplier: Thermo Scientific Chemicals

ThermoScintific Chemicals

ThermoScintific Chemicals

Synonyms: 3',6'-Dihydroxy-3H-spiro[isobenzofuran-1,9'-xanthen]-3-one, disodium salt, Acid Yellow 73, Yellow No. 8, Fluorescein sodium salt, 2-(6-hydroxy-3-oxo-(3H)-xanthen-9-yl)benzoic acid disodium salt, Disodium 2-(3-oxo-6-oxidoxanthen-9-yl)benzoate

17324-0025 17324-1000 17324-5000

TS17324-0025EA 426 USD

TS17324-0025 TS17324-1000 TS17324-5000

Fluorescein disodium salt, pure

Fluorescein disodium salt

Formula: C₂₀H₁₀Na₂O₅
MW: 376.28 g/mol
Melting Pt: 320 °C
Storage Temperature: Ambient

MDL Number: MFCD00167039
CAS Number: 518-47-8
EINECS: 208-253-0
Merck Index: 1304185

https://digitalassets.avantorsciences.com/adaptivemedia/rendition?id=949f2473a2f0c6f8d00fd80ca2f80b730bc8076a&vid=fe174603ab8c1727364c1e09d665a1ad5a6d9106&prid=web&clid=SAPDAM

Specification Test Results

Appearance	Orange-red to green-brown to dark brown Powder
Infrared spectrum	Conforms
Loss on drying	≤10 % (105°C)
UV Lambda max	488 to 491 nm (in buffer pH 8)
Absorption Ratio P-15/P+15	1.2 to 1.7
Specific absorbance A (1%/1cm)	≥1700 (at lambda max.)

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