195235

Orange II sodium salt

(Certified by the Biological Stain Commission), Dye content ≥85 %

• Synonym(s): 4-(2-Hydroxy-1-naphthylazo)benzenesulfonic acid sodium salt, Acid Orange 7, Acid Orange A, Orange II, Tropaeolin 000 No. 2
• Empirical Formula (Hill Notation): C₁₆H₁₁N₂NaO₄S
• CAS Number: 633-96-5
• Molecular Weight: 350.32
• Colour Index Number: 15510
• Beilstein/REAXYS Number: 3898201
• EC Number: 211-199-0
• MDL number: MFCD00011657
• UNSPSC Code: 12171500
• PubChem Substance ID: 24851680
• NACRES: NA.47

Properties

• product line: BioXtra
• Quality Level: 200
• form: powder
• composition: Dye content, ≥85%
• λmax: 483 nm
• ε (extinction coefficient): ≥17000 at 480-486 nm in water at 0.01 g/L; ≥26500 at 225-231 nm in water at 0.01 g/L; ≥7500 at 307-313 nm in water at 0.01 g/L
• application(s): diagnostic assay manufacturing; hematology; histology
• storage temp.: room temp
• SMILES string: [Na+].Oc1ccc2ccccc2c1\N=N\c3ccc(cc3)S([O-])(=O)=O
• InChI: 1S/C16H12N2O4S.Na/c19-15-10-5-11-3-1-2-4-14(11)16(15)18-17-12-6-8-13(9-7-12)23(20,21)22;/h1-10,19H,(H,20,21,22);/q;+1/p-1/b18-17+;
• InChI key: CQPFMGBJSMSXLP-ZAGWXBKKSA-M

Description

Suitability

Certified for use in the Wilson-Ezrin method for pituitary acidophils, as a counterstain following Heidenhain′s or Weigert′s hematoxylin on paraffin sections, and as a substitute for orange G in Floemming′s triple stain.

Safety Information

• Storage Class: 13 - Non Combustible Solids
• wgk_germany: WGK 3
• flash_point_f: Not applicable
• flash_point_c: Not applicable
• ppe: dust mask type N95 (US), Eyeshields, Gloves