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195251 Sigma-Aldrich

Direct Red 81

Dye content 50 %

Synonym: DR 81, Disodium 7-benzamido-4-hydroxy-3-[[4-[(4-sulphonatophenyl)azo]phenyl]azo]naphthalene-2-sulphonate

  • CAS Number 2610-11-9

  • Empirical Formula (Hill Notation) C29H19N5Na2O8S2

  • Molecular Weight 675.60

  •  Colour Index Number 28160

  •  EC Number 220-028-9

  •  MDL number MFCD00003949

  •  PubChem Substance ID 24851682

  •  NACRES NA.47

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Properties

Related Categories Cell Biology, D, Hematology and Histology, Stains & Dyes, A to Z, Stains and Dyes More...
Quality Level   100
composition   Dye content, 50%
mp   240 °C (dec.) (lit.)
λmax   397 nm
  508 nm (2nd)
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

Packaging

25, 100 g in glass bottle

Biochem/physiol Actions

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

Safety & Documentation

Safety Information

Personal Protective Equipment 
RIDADR 
NONH for all modes of transport
WGK Germany 
WGK 3
RTECS 
QK1370000
Flash Point(F) 
Not applicable
Flash Point(C) 
Not applicable

Documents

Certificate of Analysis (COA)

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Protocols & Articles
Peer-Reviewed Papers
15

References

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