Skip to Content
Merck
All Photos(2)

Documents

M6900

Sigma-Aldrich

Methyl Blue

powder or crystals

Synonym(s):

Acid blue 93, Aniline blue water soluble, Cotton blue, Poirriers blue, Water blue

Sign Into View Organizational & Contract Pricing
All Photos(2)

About This Item

Empirical Formula (Hill Notation):
C37H27N3Na2O9S3
CAS Number:
28983-56-4
Molecular Weight:
799.80
Colour Index Number:
42780
EC Number:
249-352-9
MDL number:
MFCD00058509
UNSPSC Code:
12171500
PubChem Substance ID:
329818037
NACRES:
NA.47

form

powder or crystals

mp

>-23 °C

solubility

H2O: 1 mg/mL, blue

εmax

≥650 at 594-610  nm

application(s)

diagnostic assay manufacturing
hematology
histology

storage temp.

room temp

SMILES string

[Na+].[Na+].OS(=O)(=O)c1ccc(Nc2ccc(cc2)\C(c3ccc(Nc4ccc(cc4)S([O-])(=O)=O)cc3)=C5/C=CC(\C=C5)=N/c6ccc(cc6)S([O-])(=O)=O)cc1

InChI

1S/C37H29N3O9S3.2Na/c41-50(42,43)34-19-13-31(14-20-34)38-28-7-1-25(2-8-28)37(26-3-9-29(10-4-26)39-32-15-21-35(22-16-32)51(44,45)46)27-5-11-30(12-6-27)40-33-17-23-36(24-18-33)52(47,48)49;;/h1-24,38-39H,(H,41,42,43)(H,44,45,46)(H,47,48,49);;/q;2*+1/p-2

InChI key

MCPLVIGCWWTHFH-UHFFFAOYSA-L

Looking for similar products? Visit Product Comparison Guide

General description

Methyl Blue is a triaminotriphenylmethane dye, widely used in paper, textile and leather production.

Application

Methyl Blue has been used:
  • to stain leaf disks for callose visualization within the cells
  • to incubate cells for 4′,6-diamidino-2-phenylindole (DAPI)/septa staining
  • as a marker for β-(1-3)-d-glucans or acidic phloroglucinol for the detection of callose and lignin

Biochem/physiol Actions

Methyl Blue is considered as a xenobiotic compound and has antiseptic property. It is useful in polychrome staining. Methyl blue is mostly used for staining samples in histology and microbiology. It is also useful as a model to reveal the role of catalyst in light induced degradation of dyes.

Storage Class Code

13 - Non Combustible Solids

WGK

WGK 2

Flash Point(F)

>572.0 °F - Pensky-Martens closed cup

Flash Point(C)

> 300 °C - Pensky-Martens closed cup

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

Potassium phosphite primes defense responses in potato against Phytophthora infestans.
Machinandiarena MF
Journal of Plant Physiology, 169, 1417-1417 (2012)
Biodegradation of basic violet 3 and acid blue 93 by Pseudomonas putida
Khan SS, et al.
Clean: Soil, Air, Water, 43(1), 67-72 (2015)
A novel alpha-1, 3-glucan elicits plant defense responses in potato and induces protection against Rhizoctonia solani AG-3 and Fusarium solani f. sp. eumartii
Wolski EA, et al.
Physiological and Molecular Plant Pathology, 69(1-3), 93-103 (2006)
Potassium phosphite primes defense responses in potato against Phytophthora infestans
Machinandiarena MF, et al.
Journal of Plant Physiology, 169(14), 1417-1424 (2012)
Replication stress in early S phase generates apparent micronuclei and chromosome rearrangement in fission yeast
Sabatinos SA, et al.
Molecular Biology of the Cell, 26(19), 3439-3450 (2015)
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