Merck 1038870250 荧光素钠盐 (c.i. 45350) ind (C₂₀H₁₀Na₂O₅, 塑料瓶 250g)

CAS number: 518-47-8

EC number: 208-253-0

Grade: Reag. Ph Eur

Hill Formula: C₂₀H₁₀Na₂O₅

Molar Mass: 376.27 g/mol

Appearance: Redishbrown powder, eventually with granular and bright parts.

Identity (UV/VIS-Spectrum): passes test

Identity (IR-spectrum): passes test

Absorption maximum λmax. (buffer pH 8.0): 490 - 492 nm

Spec. Absorptivity A 1%/1cm (λmax; 0.005 g/l; buffer pH 8.0; calc. on dried substance): ≥ 1850

Loss on drying (110 °C): ≤ 10 %

Suitability as indicator (Adsorption indicator for argentometry): passes test