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Direct Red 81

SIAL/195251 - 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
EC Number: 220-028-9
MDL Number: MFCD00003949
Linear Formula: C29H19N5Na2O8S2
Product Type: Chemical
Catalog Number PKG Qty. Price Quantity
45-195251-25G 25 g
 $45.90
1/EA		 Add To Favorites
45-195251-100G 100 g
 $116.00
1/EA		 Add To Favorites
This picture is provided solely for illustration purposes. Optical properties of the actual product may deviate. Relevant product information is printed on labeled products and other accompanying or available information material. This image depicts SKU: 195251-100G
This picture is provided solely for illustration purposes. Optical properties of the actual product may deviate. Relevant product information is printed on labeled products and other accompanying or available information material. This image depicts SKU: 195251-25G

 

ε (extinction coefficient) ≥12000 at 272-278 nm in H2O at 0.01 g/L
λmax 397 nm
  508 nm (2nd)
application(s) diagnostic assay manufacturing
hematology
histology
composition Dye content, 50%
form powder
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
mp 240 °C (dec.) (lit.)
Quality Level 100 
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
solubility H2O: 0.1%, dark red
storage temp. room temp
Biochem/physiol Actions: Bacterial consortium NBNJ6 has an ability to decolorize direct red 81 (DR81).
Packaging: 25, 100 g in glass bottle
RIDADR NONH for all modes of transport
WGK Germany WGK 3
Flash Point(F) Not applicable
Flash Point(C) Not applicable
mp 240 °C (dec.) (lit.)
Storage Temp. room temp
Colour Index Number 28160
UNSPSC 12171500

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