Fluoresceina, C.I. 45350, EssentQ®

- Synonyms: 3',6'-Dihydroxyspiro[isobenzofuran-1(3H),9'-[9H]xanthen]-3-one
- C20H12O5
- M = 332,31 g/mol
- CAS [2321-07-5]
- EINECS-No.: 219-031-8
- Solub. in water: (20 ºC): insoluble
- Melting point: 320 ºC
- GHS-signal word: Warning
- GHS-H sentences: H319
- GHS-P sentences: P280 - P264 - P305+P351+P338 - P337+P313
- Tariff number: 3204 90 00 00
- Applications: analytical chemistry, laboratory reagent, indicator, for the detection of: bromine.

SPECIFICATIONS
Absorption maximum l (NaOH, 0,1 M) : 487 - 491 nm
Absorptivity (A1%/1 cm; l max.): 2200 - 2500
sensitivity as reagent for bromides: passes test
suitability as adsorption indicator : passes test
loss on drying (135 °C) : max. 5 %