1.04593

Hydroxynaphthol blue

metal (pM) indicator

• Synonym(s): Hydroxynaphthol blue, 2,2′-Dihydroxy-1,1′-azonaphthalene-3′,4,6′-trisulfonic acidtrisodiumsalt
• Empirical Formula (Hill Notation): C₂₀H₁₁N₂Na₃O₁₁S₃
• CAS Number: 63451-35-4
• Molecular Weight: 620.47
• UNSPSC Code: 12352107
• EC Index Number: 264-197-7
• NACRES: SE.11

Properties

• Quality Level: 100
• form: solid
• pH: 2-3 (20 °C, 10 g/L in H₂O)
• solubility: 340 g/L
• bulk density: 330 kg/m³
• storage temp.: 15-25°C
• InChI: 1S/C20H14N2O11S3.3Na/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;;;/h1-9,22,24H,(H,25,26,27)(H,28,29,30)(H,31,32,33);;;/q;3*+1/p-3/b21-18-;;;
• InChI key: JQECMNGWLIFQLL-QRQZZYIYSA-K

Description

Application

• Facile synthesis of light harvesting semiconductor bismuth oxychloride nano photo-catalysts for efficient removal of hazardous organic pollutants.: This study demonstrates the use of hydroxylammonium chloride in the synthesis of bismuth oxychloride nanophotocatalysts. These catalysts are utilized for the degradation of hazardous organic compounds, highlighting a significant application in environmental remediation and analytical chemistry (Seddigi ZS et al., 2017).


• On-column derivatization using redox activity of porous graphitic carbon stationary phase: an approach to enhancement of separation selectivity of liquid chromatography.: This article explores the use of hydroxylammonium chloride in on-column derivatization during liquid chromatographic processes. It focuses on enhancing separation selectivity, illustrating its pivotal role in refining analytical methods for complex mixtures (Shibukawa M et al., 2003).

Analysis Note

Appearance of solution: conforms
Loss on Drying (105 °C): ≤ 5 %
Suitability as indicator (for metal titration): conforms

Safety Information

• Storage Class: 11 - Combustible Solids
• wgk_germany: WGK 3
• flash_point_f: Not applicable
• flash_point_c: Not applicable