FLUORESCEIN SODIUM

C.I.No.45350 Sodium fluorescein is used as a fluorescent tracer to study blood-brain barrier (BBB) and blood-spinal cord barrier (BSCB) permeability in rodent models.
Acid Yellow 73, NaFl, NaFluo, Sodium fluorescein, Uranine

Article No.

03856

Grade

Purity

CAS No.

518-47-8

Molecular Formula

C₂₀H₁₀Na₂O₅

Molecular Weight

376.28

H.S. Code

3204.9000

Shelf Life

60 Months

MSDS

Certificate of Analysis (COAs)

Physical Properties

Physical state at 20 °C

Solid

Colour

Dark red crystalline

Odour

Odorless

pH value

8.3 at 10 g/l at 20 °C

Melting point/ Freezing point [°C]

> 300 °C

Solubility in water [% weight]

500 g/l at 20 °C

Partition coefficient Log Pow octanol / water at 20°C

-0.67

Appearance	Orange-red to green-brown to dark brown powder
Identity (IR)	Confirms to structure
Loss on drying (at 105°C)	Max 10.0%
Absorption maxima (in buffer pH 8.0)	488 to 491 nm
UV absorbance ratio (P-15/P+15)	1.2 - 1.7
Specific absorptivity 1%/1cm (at λmax; buffer pH 8.0)	Min 1700