Skip to Content
MilliporeSigma
All Photos(2)

Documents

199567

Sigma-Aldrich

Ethyl Orange sodium salt

indicator grade, Dye content 90 %

Synonym(s):

4-(4-Diethylaminophenylazo)benzenesulfonic acid sodium salt

Sign Into View Organizational & Contract Pricing


About This Item

Linear Formula:
(C2H5)2NC6H4N=NC6H4SO3Na
CAS Number:
Molecular Weight:
355.39
Beilstein/REAXYS Number:
3821641
EC Number:
MDL number:
UNSPSC Code:
12171500
PubChem Substance ID:
NACRES:
NA.47

grade

indicator grade

Quality Level

composition

Dye content, 90%

technique(s)

titration: suitable

visual transition interval

3.0-4.8, red to orange

solubility

H2O: 1 mg/mL

λmax

474 nm

ε (extinction coefficient)

≥29000 at 473-477 nm in deionized water
≥8000 at 274-282 nm in deionized water

application(s)

diagnostic assay manufacturing
hematology
histology

storage temp.

room temp

SMILES string

CCN(CC)c1ccc(cc1)\N=N\c2ccc(cc2)S(O)(=O)=O

InChI

1S/C16H19N3O3S.Na/c1-3-19(4-2)15-9-5-13(6-10-15)17-18-14-7-11-16(12-8-14)23(20,21)22;/h5-12H,3-4H2,1-2H3,(H,20,21,22);/q;+1/p-1/b18-17+;

InChI key

YZORUOZKRBVLEG-ZAGWXBKKSA-M

Looking for similar products? Visit Product Comparison Guide

Related Categories

pictograms

Exclamation mark

signalword

Warning

Hazard Classifications

Eye Irrit. 2 - Skin Irrit. 2 - STOT SE 3

target_organs

Respiratory system

wgk_germany

WGK 3

flash_point_f

Not applicable

flash_point_c

Not applicable

ppe

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’.

Already Own This Product?

Find documentation for the products that you have recently purchased in the Document Library.

Visit the Document Library

Our team of scientists has experience in all areas of research including Life Science, Material Science, Chemical Synthesis, Chromatography, Analytical and many others.

Contact Technical Service