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3301-79-9

Basic Information
CAS No.: 3301-79-9
Name: 6-Carboxyfluorescein
Article Data: 11
Molecular Structure:
Molecular Structure of 3301-79-9 (6-Carboxyfluorescein)
Formula: C21H12O7
Molecular Weight: 376.322
Synonyms: Spiro[phthalan-1,9'-xanthene]-6-carboxylicacid, 3',6'-dihydroxy-3-oxo- (8CI);Terephthalic acid,(3,6,9-trihydroxyxanthen-9-yl)-, g-lactone (7CI);6-FAM;Fluorescein, 6-carboxy-;
EINECS: 276-331-1
Density: 1.73 g/cm3
Melting Point: >300 °C(lit.)
Boiling Point: 736.4 °C at 760 mmHg
Flash Point: 271 °C
Solubility: DMSO: soluble
Appearance: Orange solid
Hazard Symbols: IrritantXi
Risk Codes: 36/37/38
Safety: 26-36/37
PSA: 113.29000
LogP: 3.36400
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Chemistry

IUPAC  Name: 3',6'-Dihydroxy-1-oxospiro[2-benzofuran-3,9'-xanthene]-5-carboxylic acid    
Empirical Formula: C21H12O7
Molecular Weight: 376.3158 
Einecs: 276-331-1
Product Categories: Electronic chemicals ; Fluorescent labels and Indicators 
Freely Rotating Bonds: 3
Polar Surface Area: 80.29 Å2
Index of Refraction: 1.816
Molar Refractivity: 94.27 cm3
Molar Volume: 217.3 cm3
Polarizability: 37.37 ×10-24 cm3
Surface Tension: 107.7 dyne/cm
Density: 1.73 g/cm3
Flash Point: 271 °C
Enthalpy of Vaporization: 112.76 kJ/mol
Boiling Point: 736.4 °C at 760 mmHg
Vapour Pressure: 9.09E-23 mmHg at 25°C 
The Cas Register Number of  6-Carboxyfluorescein is 3301-79-9.The chemical synonyms of  6-Carboxyfluorescein (CAS NO.3301-79-9) are 3',6'-Dihydroxy-3-oxospiro(isobenzofuran-1(3H),9'-(9H)xanthene)-6-carboxylic acid  and Spiro(isobenzofuran-1(3H),9'-(9H)xanthene)-6-carboxylic acid, 3',6'-dihydroxy-3-oxo- .The molecular structure of  6-Carboxyfluorescein (CAS NO.3301-79-9) is
.

Uses

  6-Carboxyfluorescein (CAS NO.3301-79-9) is used in organic synthesis .

Safety Profile

Hazard Codes: IrritantXi
Risk Statements: 36/37/38 
R36/37/38: Irritating to eyes, respiratory system and skin.
Safety Statements: 26-36/37 
S26: In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. 
S36/37: Wear suitable protective clothing and gloves.
WGK Germany: 3
F: 10-21