Fluorescein p.d.a.

Catalog number: CHEM-114277705

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 (1%, 1 cm, 490 ± 5 nm, water + Na₂CO₃): min. 2200
• Loss on drying: max. 2.0%
• Residue on ignition (as SO₄): max. 0.3%
• Resorcinol impurities: max. 3.0%

Examples of Applications in Various Industries

• Fluorescent tracer in hydrology and flow diagnostics
• Dye for fluorescence microscopy and spectrophotometry
• Detection of leaks and fluid circulation in technical systems

Hazard Warnings (H)

The product is not classified as hazardous according to applicable CLP regulations.

Precautionary Measures (P)

Not applicable.

Restrictions

The product is intended for laboratory and technical purposes only. Do not use for medical or food purposes.

Recommended Storage Conditions

Store in a tightly closed container in a dry, cool, and well-ventilated place. Protect from light and moisture.