S9256

Sulfanilic acid azochromotrop

≥80% purity, powder

• Synonym(s): 1,8-Dihydroxy-2-(4-sulfophenylazo)naphthalene-3,6-disulfonic acid trisodium salt, 2-(4-Sulfophenylazo)-1,8-dihydroxy-3,6-naphthalene disulfonic acid trisodium salt, 2-(4-Sulfophenylazo)chromotropic acid trisodium salt, SPADNS
• Empirical Formula (Hill Notation): C₁₆H₉N₂Na₃O₁₁S₃
• CAS Number: 23647-14-5
• Molecular Weight: 570.41
• NACRES: NA.47
• PubChem Substance ID: 24899830
• UNSPSC Code: 12171500
• EC Number: 245-803-9
• MDL number: MFCD00003952

Properties

• Product Name: Sulfanilic acid azochromotrop, ≥80%
• InChI: 1S/C16H12N2O11S3.3Na/c19-12-7-11(31(24,25)26)5-8-6-13(32(27,28)29)15(16(20)14(8)12)18-17-9-1-3-10(4-2-9)30(21,22)23;;;/h1-7,19-20H,(H,21,22,23)(H,24,25,26)(H,27,28,29);;;/q;3*+1/p-3/b18-17+;;;
• InChI key: AEHGQXKBQBMQEK-GLCFPVLVSA-K
• SMILES string: [Na+].[Na+].[Na+].Oc1cc(cc2cc(c(\N=N\c3ccc(cc3)S([O-])(=O)=O)c(O)c12)S([O-])(=O)=O)S([O-])(=O)=O
• assay: ≥80%
• form: powder
• composition: Carbon: 26.0-35.0%; ; Nitrogen: 3.6-5.9%
• technique(s): titration: suitable
• solubility: water: 10 mg/mL
• color: dark red
• λmax: 505-510 nm
• application(s): diagnostic assay manufacturing; hematology; histology
• storage temp.: room temp
• Quality Level: 200

Description

Application

Sulfanilic acid azochromotrop, commonly known as SPADNS, is used mostly as an indicator for complexometric determinations of transition metals like zirconium. It is used as a reagent for drinking and wastewater analysis.

General description

Sulfanilic acid azochromotrop is commonly known as SPADNS.

Safety Information

• Storage Class: 11 - Combustible Solids
• wgk: WGK 3
• ppe: dust mask type N95 (US), Eyeshields, Gloves