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
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About This Item
Empirical Formula (Hill Notation):
C29H19N5Na2O8S2
CAS Number:
Molecular Weight:
675.60
Colour Index Number:
28160
EC Number:
MDL number:
UNSPSC Code:
12171500
PubChem Substance ID:
NACRES:
NA.47
Recommended Products
form
powder
Quality Level
composition
Dye content, 50%
technique(s)
microbe id | staining: suitable
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
Related Categories
Biochem/physiol Actions
Bacterial consortium NBNJ6 has an ability to decolorize direct red 81 (DR81).
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)
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