Name: ERIOCHROME BLUE-BLACK B (C.I. 14640)
Brand: MERCK
SKU: 1.03168.0025
Price: 1765000 IDR
Availability: InStock

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ERIOCHROME BLUE-BLACK B (C.I. 14640)

Brands: MERCK

Rp 1.765.000

metal indicator

Synonym(s): Eriochrome blue-black B (C.I. 14640), 2-Hydroxy-1-(1-hydroxy-2-naphthylazo)-naphthalene-4-sulfonic acid sodium salt

Empirical Formula (Hill Notation): C20H13N2NaO5S

Identity (UV/VIS-Spectrum): passes test

Absorption maximum λmax. (buffer pH 10.0): 634 - 644 nm

Spec. Absorptivity A 1%/1cm (λmax; 0.025 g/l; buffer pH 10.0; calculated on anhydrous substance): 220 - 320

Loss on drying (110 °C): ≤ 10 %

Suitability as indicator (for metal titration): passes test