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N5632

Sigma-Aldrich

Nile Blue A

Dye content ≥75 %, Powder

Synonym(s):

Basic Blue 12, Nile blue sulfate

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About This Item

Linear Formula:
2C20H20N3O · SO4
CAS Number:
Molecular Weight:
732.85
Colour Index Number:
51180
EC Number:
MDL number:
UNSPSC Code:
12171500
PubChem Substance ID:
NACRES:
NA.47

product name

Nile Blue A, Dye content ≥75 %

form

powder

Quality Level

composition

Dye content, ≥75%

mp

>300 °C (dec.) (lit.)

solubility

H2O: 1 mg/mL, blue

application(s)

diagnostic assay manufacturing
hematology
histology

storage temp.

room temp

SMILES string

[O-]S([O-])(=O)=O.CC\[N+](CC)=C1/C=CC2=Nc3c(OC2=C1)cc(N)c4ccccc34.CC\[N+](CC)=C5/C=CC6=Nc7c(OC6=C5)cc(N)c8ccccc78

InChI

1S/2C20H19N3O.H2O4S/c2*1-3-23(4-2)13-9-10-17-18(11-13)24-19-12-16(21)14-7-5-6-8-15(14)20(19)22-17;1-5(2,3)4/h2*5-12,21H,3-4H2,1-2H3;(H2,1,2,3,4)

InChI key

QIRDPEPUXNCOLD-UHFFFAOYSA-N

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General description

Nile Blue A is aminodiethylaminonaphthophenoxazonium sulfate employed in biology and histology. It is a highly fluorescent, and photostable organic dye used to dye clothing, and is for use in lipid histochemistry.

Application

Nile blue A is suitable for staining and discriminating between melanins and lipofuscins in paraffin sections of animal tissue, and in a histochemical method for lipids in frozen sections.

Biochem/physiol Actions

Nile blue A stains acidic components, such as phospholipids, nucleic and fatty acids by imparting a dark blue color, while neutral lipids, namely triglycerides, are stained pink, or red.

Features and Benefits

Used in the preparation of an amperometric glucose sensor.

Storage Class Code

11 - Combustible Solids

WGK

WGK 3

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

Certificates of Analysis (COA)

Search for Certificates of Analysis (COA) by entering the products Lot/Batch Number. Lot and Batch Numbers can be found on a product’s label following the words ‘Lot’ or ‘Batch’.

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