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Fluorescein disodium salt

$ 1.00 /1KG

Min. Order1G
Purity99%
Cas No518-47-8
Supply Ability100KG
Update time2019-07-06

career henan chemical co

career henan chemical co

7YR

China

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Chemical Properties

Product Name	Fluorescein disodium salt
CAS No	518-47-8
EC-No	208-253-0
Min. Order	1G
Purity	99%
Supply Ability	100KG
Release date	2019/07/06

AD68

Fluorescein disodium salt Basic information

Product Name:	Fluorescein disodium salt
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:	C20H10Na2O5
MW:	376.27
EINECS:	208-253-0
Product Categories:	Intermediates of Dyes and Pigments;Dyes and Pigments;Pharmaceutical intermediates;Fluorescent;Xanthene
Mol File:	518-47-8.mol

Fluorescein disodium salt Chemical Properties

Melting point	320 °C
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℃)
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
CAS DataBase Reference	518-47-8(CAS DataBase Reference)
EPA Substance Registry System	Spiro[isobenzofuran- 1(3H),9'-[9H]xanthen]- 3-one, 3',6'-dihydroxy-, disodium salt(518-47-8)

Safety Information

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

Fluorescein disodium salt Usage And Synthesis

Chemical Properties	orange powder
Uses	A sodium salt of fluorescein
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	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.
Toxicity	LD50 in mice, rats (mg/kg): 4738, 6721 orally (Yankel, Loux)

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