Sodium Fluorescein CAS NO.518-47-8

Fluorescein Sodium Chemical Properties
Melting point     320 °C
storage temp.     Store at +5°C to +30°C.
solubility     H2O: soluble1mg/mL
Colour Index     45350
form     Powder
pka    2.2, 4.4, 6.7(at 25℃)
color     Rust-orange
Odor    Odorless
PH    8.3 (10g/l, H2O, 20℃)
PH Range    Pink uorescence (4.0) to green uorescence (6.0)
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    Fluorescein, disodium salt (518-47-8)     

Fluorescein Sodium Basic information
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:    C20H10Na2O5
MW:    376.27
EINECS:    208-253-0
Mol File:    518-47-8.mol 

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
Toxicity    LD50 in mice, rats (mg/kg): 4738, 6721 orally (Yankel, Loux)