195251

Direct Red 81

Dye content 50 %

• Synonym(s): DR 81, Disodium 7-benzamido-4-hydroxy-3-[[4-[(4-sulphonatophenyl)azo]phenyl]azo]naphthalene-2-sulphonate
• Empirical Formula (Hill Notation): C₂₉H₁₉N₅Na₂O₈S₂
• CAS Number: 2610-11-9
• Molecular Weight: 675.60
• Colour Index Number: 28160
• EC Number: 220-028-9
• MDL number: MFCD00003949
• UNSPSC Code: 12171500
• PubChem Substance ID: 24851682
• NACRES: NA.47

Properties

• form: powder
• Quality Level: 100
• composition: Dye content, 50%
• mp: 240 °C (dec.) (lit.)
• solubility: H₂O: 0.1%, dark red
• λmax: 397 nm; 508 nm (2nd)
• ε (extinction coefficient): ≥12000 at 272-278 nm in H₂O at 0.01 g/L
• application(s): diagnostic assay manufacturing; hematology; histology
• storage temp.: room temp
• SMILES string: [Na+].[Na+].Oc1c(N=Nc2ccc(cc2)N=Nc3ccc(cc3)S([O-])(=O)=O)c(cc4cc(NC(=O)c5ccccc5)ccc14)S([O-])(=O)=O
• InChI: 1S/C29H21N5O8S2.2Na/c35-28-25-15-12-23(30-29(36)18-4-2-1-3-5-18)16-19(25)17-26(44(40,41)42)27(28)34-33-21-8-6-20(7-9-21)31-32-22-10-13-24(14-11-22)43(37,38)39;;/h1-17,35H,(H,30,36)(H,37,38,39)(H,40,41,42);;/q;2*+1/p-2
• InChI key: UFUQRRYHIHJMPB-UHFFFAOYSA-L

Description

Biochem/physiol Actions

Bacterial consortium NBNJ6 has an ability to decolorize direct red 81 (DR81).

Safety Information

• Storage Class: 11 - Combustible Solids
• wgk_germany: WGK 3
• flash_point_f: Not applicable
• flash_point_c: Not applicable
• ppe: Eyeshields, Gloves, type N95 (US)