219916

Hydroxy naphthol blue disodium salt

ACS reagent

• Synonym(s): disodium;3-hydroxy-4-[(2-hydroxy-4-sulfonatonaphthalen-1-yl)diazenyl]-7-sulfonaphthalene-2-sulfonate
• Linear Formula: C₂₀H₁₂N₂O₁₁S₃Na₂
• CAS Number: 165660-27-5
• Molecular Weight: 598.49
• MDL number: MFCD00058506
• UNSPSC Code: 12171500
• PubChem Substance ID: 24853154
• NACRES: NA.47

Properties

• grade: ACS reagent
• Quality Level: 200
• form: powder, crystals or granules
• pH: 7.9
• mp: 274 °C
• solubility: water: soluble
• density: 2.130 g/cm³
• λmax: 650 nm
• suitability: passes test for determination of calcium
• application(s): diagnostic assay manufacturing; hematology; histology
• storage temp.: room temp
• SMILES string: Oc1cc(c2ccccc2c1N=Nc3c(O)c(cc4cc(ccc34)S(=O)(=O)O[Na])S(=O)(=O)O[Na])S(O)(=O)=O
• InChI: 1S/C20H14N2O11S3.2Na/c23-15-9-16(35(28,29)30)13-3-1-2-4-14(13)18(15)21-22-19-12-6-5-11(34(25,26)27)7-10(12)8-17(20(19)24)36(31,32)33;;/h1-9,23-24H,(H,25,26,27)(H,28,29,30)(H,31,32,33);;/q;2*+1/p-2
• InChI key: WPDDXLRAJOPBIR-UHFFFAOYSA-L

Description

General description

Hydroxy naphthol blue disodium salt is a chemical compound belonging to the class of azo dyes commonly used as a pH indicator.It exists as small blue crystals. Hydroxy naphthol blue is suitable for the quantification of metal leaching in metal affinity chromatography. It changes color at pH range 12-13 from blue to reddish pink, in the presence of calcium ions and to deep blue in the presence of disodium ethylenediaminetetraacetic acid (EDTA).

Safety Information

• pictograms: GHS07
• signalword: Warning
• hcodes: H319
• pcodes: P264 - P280 - P305 + P351 + P338 - P337 + P313
• Hazard Classifications: Eye Irrit. 2
• Storage Class: 11 - Combustible Solids
• wgk_germany: WGK 3