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Sigma-Aldrich

Methylene Blue zinc chloride double salt

for microscopy (Bact., Bot., Hist.), ~1 mol/mol water

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Empirical Formula (Hill Notation):
C16H18ClN3S · 0.5ZnCl2 · xH2O
CAS Number:
Molecular Weight:
388.00 (anhydrous basis)
Beilstein/REAXYS Number:
3839953
MDL number:
UNSPSC Code:
12352106
PubChem Substance ID:
NACRES:
NA.25

grade

for microscopy (Bact., Bot., Hist.)

Quality Level

impurities

~1 mol/mol water

SMILES string

O.[Cl-].CN(C)c1ccc2N=C3C=C\C(C=C3Sc2c1)=[N+](/C)C

InChI

1S/C16H18N3S.ClH.H2O/c1-18(2)11-5-7-13-15(9-11)20-16-10-12(19(3)4)6-8-14(16)17-13;;/h5-10H,1-4H3;1H;1H2/q+1;;/p-1

InChI key

WQVSELLRAGBDLX-UHFFFAOYSA-M

Related Categories

Application

Methylene blue is a heterocyclic aromatic chemical compound used as a cationic dye. It is used as a redox indication in analytical chemistry. Methylene blue is a component of a number of staining protocols such as Wright′s stain and Jenner′s stain for microscopic evaluation.

pictograms

Skull and crossbones

signalword

Danger

hcodes

Hazard Classifications

Acute Tox. 3 Oral - Eye Irrit. 2

wgk_germany

WGK 3

flash_point_f

Not applicable

flash_point_c

Not applicable

ppe

dust mask type N95 (US), Eyeshields, Faceshields, Gloves


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Kristine Krafts et al.
Parasitology research, 109(3), 521-529 (2011-06-11)
Methylene blue was synthesized by Caro in 1876 at BASF, a chemical company. Six years later, Koch employed methylene blue when he discovered the tubercle bacillus. In 1880, Ehrlich described what he termed "neutral" dyes: mixtures of acidic and basic
Mohammad A Al-Ghouti et al.
Scientific reports, 10(1), 15928-15928 (2020-09-29)
In the current study, the mechanistic understanding of the adsorption isotherm and thermodynamic aspects of cationic methylene blue (MB) dye adsorption onto cellulosic olive stones biomass from wastewater were investigated. The batch adsorption of MB onto the olive stones (black
K P Krafts et al.
Biotechnic & histochemistry : official publication of the Biological Stain Commission, 86(1), 7-35 (2011-01-18)
The components of the blood stain, eosin and methylene blue, were introduced by Baeyer and Caro, respectively. Methylene blue was used primarily for detecting Mycobacterium tuberculosis until Ehrlich in 1880 mixed methylene blue with acid fuchsin to produce what he
A Van Deun et al.
The international journal of tuberculosis and lung disease : the official journal of the International Union against Tuberculosis and Lung Disease, 14(12), 1571-1575 (2010-12-15)
Damien Foundation Bangladesh tuberculosis (TB) control projects. To compare blue ink, potassium permanganate and methylene blue background staining for transmitted light-emitting diode (LED) TB fluorescence microscopy (FM). Auramine smears made in triplicate from Ziehl-Neelsen (ZN) acid-fast bacilli (AFB) positive or

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