Skip to Content
Merck
All Photos(1)

Documents

57000

Sigma-Aldrich

Indigo carmine

for microscopy (Bact., Hist.), indicator (pH 11.5-14.0)

Synonym(s):

Acid Blue 74, Indigo-5,5′-disulfonic acid disodium salt, Indigocarmine

Sign Into View Organizational & Contract Pricing
All Photos(1)

About This Item

Empirical Formula (Hill Notation):
C16H8N2Na2O8S2
CAS Number:
860-22-0
Molecular Weight:
466.35
Colour Index Number:
73015
Beilstein:
4103904
EC Number:
212-728-8
MDL number:
MFCD00005723
UNSPSC Code:
12171500
PubChem Substance ID:
57651616
NACRES:
NA.47

grade

for microscopy (Bact., Hist.)
indicator (pH 11.5-14.0)

Quality Level

100

form

powder

loss

≤5% loss on drying

pH

3.87 (30 °C, 7.14 g/L)

mp

>340 °C

solubility

methanol: 0.01 g/10 mL, blue to very deep blue

density

0.71 g/cm3 at 29 °C

εmax

≥350 at 603-613 nm

application(s)

diagnostic assay manufacturing
hematology
histology

storage temp.

room temp

SMILES string

[Na+].[Na+].[O-]S(=O)(=O)c1ccc2NC(\C(=O)c2c1)=C3\Nc4ccc(cc4C3=O)S([O-])(=O)=O

InChI

1S/C16H10N2O8S2.2Na/c19-15-9-5-7(27(21,22)23)1-3-11(9)17-13(15)14-16(20)10-6-8(28(24,25)26)2-4-12(10)18-14;;/h1-6,17-18H,(H,21,22,23)(H,24,25,26);;/q;2*+1/p-2/b14-13+;;

InChI key

KHLVKKOJDHCJMG-QDBORUFSSA-L

Looking for similar products? Visit Product Comparison Guide

Related Categories

Application

Indigo carmine has been used in agarose plates to study behavioral feeding assays in Drosophila larvae. It has also been used for macroscopic assessment of intestinal adenomatous polyps isolated from mice.

Biochem/physiol Actions

Indigo carmine is a contrast dye which helps in highlighting mucosal changes. It accumulates in crevices, cysts and foveolae and stains the tissue blue. The abnormal tissue remains translucent pink.

Pictograms

Exclamation mark
GHS07

Signal Word

Warning

Hazard Statements

H317

Hazard Classifications

Skin Sens. 1

Storage Class Code

11 - Combustible Solids

WGK

WGK 1

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’.

Already Own This Product?

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

Visit the Document Library

Customers Also Viewed

Slide 1 of 5

1 of 5

Indigo European Pharmacopoeia (EP) Reference Standard

Y0001752

Indigo

Tartrazine Dye content ≥85 %

Sigma-Aldrich

T0388

Tartrazine

Sunset Yellow FCF Dye content 90 %

Sigma-Aldrich

465224

Sunset Yellow FCF

Potassium indigotrisulfonate ozone-scavenging reagent

Sigma-Aldrich

234087

Potassium indigotrisulfonate

Indirubin phyproof® Reference Substance

PHL89716

Indirubin

Endoscopic Imaging Techniques and Tools (2006)
CDC42 inhibition suppresses progression of incipient intestinal tumors.
Sakamori R, et al.
Cancer Research, 74, 5480-5480 (2014)
A Pair of Pharyngeal Gustatory Receptor Neurons Regulates Caffeine-Dependent Ingestion in Drosophila Larvae.
Choi J, et al.
Frontiers in Cellular Neuroscience, 10, 181-181 (2016)
Three-dimensional staining of liver segments with an ultrasound contrast agent as an aid to anatomic liver resection.
Junichi Shindoh et al.
Journal of the American College of Surgeons, 215(2), e5-10 (2012-06-12)
Aurora rings: a novel endoscopic finding to distinguish inverted colonic diverticula from colon polyps.
Michael D Share et al.
Gastrointestinal endoscopy, 77(2), 308-312 (2012-12-05)
View All Related Papers

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