Fluorescein disodium salt concentrate for examination of subterranean waters (Uranine AP) (C.I. 45350)

Supplier: Merck


M-Clarity™ quality level = MQ200

1.08462.0100 1.08462.1000
1.08462.0100EA 111 EUR
1.08462.0100 1.08462.1000
Fluorescein disodium salt concentrate for examination of subterranean waters (Uranine AP) (C.I. 45350)
Fluorescein disodium salt
Formula: C₂₀H₁₀Na₂O₅
Melting Pt: > 300 °C
Density: 1,601 g/cm³ (20 °C)
Storage Temperature: Ambient
MDL Number: MFCD00167039
CAS Number: 518-47-8
EINECS: 208-253-0
Merck Index: 13,04185
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Specification Test Results

Identity (UV/VIS-Spectrum) passes test
Appearance Reddish-brown powder, eventually with granular and bright parts.
Absorption maximum λmax. (buffer pH 8.0) 489 - 491 nm
Spec. Absorptivity A 1%/1cm (λmax; 0.005 g/l; buffer pH 8.0; calc. on dried substance) ≥ 1800
Loss on drying (110 °C) ≤ 7 %

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