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MilliporeSigma

66720

Sigma-Aldrich

Methylene Blue hydrate

purum p.a., suitable for microscopy, ≥97.0% (calc. based on dry substance, AT)

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About This Item

Empirical Formula (Hill Notation):
C16H18ClN3S · xH2O
CAS Number:
122965-43-9
Molecular Weight:
319.85 (anhydrous basis)
Beilstein/REAXYS Number:
3599847
EC Number:
200-515-2
MDL number:
MFCD00150006
UNSPSC Code:
12171500
PubChem Substance ID:
329760310
NACRES:
NA.32

Key Documents

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grade

purum p.a.

Quality Level

200

assay

≥97.0% (calc. based on dry substance, AT)

form

powder

mol wt

319.85 g/mol (anhydrous basis)

concentration

≤100% (Methylthioninium chloride hydrate)

color

green to dark green

solubility

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

λmax

656-666 nm in water

suitability

suitable for microscopy

storage temp.

room temp

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

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General description

Methylene Blue (MB) is a basic histological dye.

Application

Methylene Blue hydrate has been used:
  • in the preparation of methylene blue (MB) solution to stain zymograms
  • to label the injection site in the tissue slices
  • to pre-treat mice via oral gavage to study its effects on noise-induced hearing loss

Biochem/physiol Actions

Methylene blue (MB) plays a key role in microbiology and pharmacology. It is mainly used in staining live organisms and in methemoglobinemia treatment. MB can be considered as a possible and safe vasoconstrictor. It has several applications in textile, paper and hair coloring sectors.

Other Notes

On the efficiency of methylene blue versus persulfate catalysis of polyacrylamide gels, as investigated by capillary zone electrophoresis
may contain up to 22% water

pictograms

Exclamation mark
GHS07

signalword

Warning

hcodes

H302

Hazard Classifications

Acute Tox. 4 Oral

Storage Class

11 - Combustible Solids

wgk_germany

WGK 3

flash_point_f

Not applicable

flash_point_c

Not applicable

ppe

dust mask type N95 (US), Eyeshields, Gloves

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Certificates of Analysis (COA)

Lot/Batch Number
BCCD9107
BCBZ4929
BCBS8551V
BCBX4947
BCBW6551

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UDP-Induced Phagocytosis and ATP-Stimulated Chemotactic Migration Are Impaired in STIM1-/- Microglia In Vitro and In Vivo
Lim HM, et al.
Mediators of Inflammation, 2017(3), e1687-e1687 (2017)
Efficient removal of different basic dyes using graphene
Iqbala MZ, et al.
Desalination and Water Treatment, 68(3), 226-235 (2017)
Preparation and analysis of crude autolytic enzyme extracts from Staphylococcus aureus
Vaz F, et al.
Bio-protocol, 5(3), e1687-e1687 (2015)
Attenuation of noise-induced hearing loss using methylene blue
Park JS, et al.
Cell Death & Disease, 5(4), e1200-e1200 (2014)
S Caglio et al.
Electrophoresis, 14(10), 997-1003 (1993-10-01)
The efficiency of a novel method of photopolymerization, based on photoinitiating the reaction with methylene blue (MB), in presence of a redox couple (sodium toluenesulfinate and diphenyliodonium chloride), vs, the conventional persulfate--N,N,N',N'-tetramethylethylenediamine redox couple was investigated as a function of
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