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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

Packings

25 g (00025)

100 g (00100)

1000 g (01000)

1PB1200060 1PB1200200
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

Physical Properties

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

Specifications

Appearance Orange red brown or maroon powder Assay (by HPLC) 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%

Safety Information and Hazard Symbols

Exclamation Mark
Symbol: GHS07
Signal Word: Warning
Hazardous Statement: H319
Precaution Statement: P305 + P351 + P338
Revision Date: 20-Mar-2023

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