Pure Fluorescein

Catalog number: CHEM-424277704

Technical Specifications

• Chemical formula: _C20H12O5
• Molar mass: 332.32 g/mol
• CAS number: 2321-07-5
• EC number: 219-031-8
• Physical form: solid
• Color: yellowish-brown or reddish-brown powder
• Odor: weak, characteristic
• Melting point: 314-316°C (decomposition)
• Boiling point: no data available
• Flash point: no data available
• Auto-ignition temperature: no data available
• Explosion limits: no data available
• Density: no data available
• Bulk density: no data
• Solubility:
  • in water: 0.3 g/l (20°C)
  • in ethanol: 20 g/l (20°C)
• Absorption coefficient: min. 1800 (1%; 1 cm; 490 ± 5 nm; water + Na₂CO₃)
• Loss on drying: max. 3.0%
• Residue on ignition (as SO₄): max. 0.5%
• Resorcinol impurities: max. 3.0%

Examples of Applications in Various Industries

• Fluorescent tracer in hydrological, chemical, and biological research
• Dye in fluorescence microscopy and spectrophotometric analyses
• Agent for visualizing fluid flows and leak detection

Hazard Warnings (H)

No classified hazards according to applicable regulations.

Precautionary Measures (P)

No recommendations according to applicable legislation.

Restrictions

The product is intended for laboratory and industrial purposes only. Not for medical or food use.

Recommended Storage Conditions

Store in a tightly closed container in a dry and cool place. Protect from moisture and light.