FLUORESCEIN

C.I.No.45350 Fluorescein is a fluorophore commonly used in microscopy, in a type of dye laser as the gain medium, in forensics and serology to detect latent blood stains, and in dye tracing.
resorcinolphthalein, C.I. 45350, solvent yellow 94, D & C yellow no. 7, angiofluor, Japan yellow 201, soap yellow

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Article No.
03855
Grade
Purity
95%
CAS No.
2321-07-5
Molecular Formula
C20H12O5
Molecular Weight
332.31
H.S. Code
3204.9000
Shelf Life
60 Months
MSDS
 

 

Physical Properties

Physical state at 20 °C
Solid
Colour
Orange red powder
Odour
Odorless
Melting point/ Freezing point [°C]
320 °C

Packings

  • 1PB1200060

    25 g (00025)

  • 1PB1200200

    100 g (00100)

  • 1000 g (01000)

 

Specifications

Appearance Orange red brown or maroon powder
Assay (on anhydrous basis) Min 95%
Solubility (in 1N NaOH) 50 mg/ml
Molar absorptivity E(490+/-2nm) Min 70000
Molar absorptivity E(284+/-2nm) Min 12000
Molar absorptivity E(238+/-2nm) Min 39000
Loss on drying (at 105°C) Max 5.0%
Melting point About 315 °C

Safety Information and Hazard Symbols

Exclamation Mark
Symbol: GHS07
Signal Word: Warning
Hazardous Statement: H319
Precaution Statement: P305 + P351 + P338
Revision Date : 18-Apr-2014
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