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77515

Sigma-Aldrich

Methylene Blue solution

for microscopy

Synonym(s):

Ehrlich’s reagent III, Loeffler’s Methylene Blue

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About This Item

Empirical Formula (Hill Notation):
C16H18ClN3S
CAS Number:
61-73-4
Molecular Weight:
319.85
Beilstein:
3641570
MDL number:
MFCD00012111
UNSPSC Code:
12171500
PubChem Substance ID:
329767738
NACRES:
NA.47

grade

for microscopy

form

solution

shelf life

limited shelf life, expiry date on the label

technique(s)

microbe id | staining: suitable

antibiotic activity spectrum

Gram-negative bacteria
Gram-positive bacteria

suitability

Corynebacterium spp.
bacteria
mycobacteria
spore forming microorganisms

SMILES string

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

InChI

1S/C16H18N3S.ClH/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/q+1;/p-1

InChI key

CXKWCBBOMKCUKX-UHFFFAOYSA-M

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Application

Loefflers Methylene Blue stain is used for the identification of diphteria bacilli, since it differentiates the deeply staining metachromatic granules from the pale blue-staining cytoplasm.

Components

Composition:
methylene blue 0.3 g
ethanol 30 ml
water 100 ml

Other Notes

This product has been replaced by 03978-SIGMA | Methylene Blue solution for microscopy, concentrate according to Ehrlich, concentrated, aqueous solution

replaced by

Product No.
Description
Pricing

Pictograms

Flame
GHS02

Signal Word

Warning

Hazard Statements

H226

Hazard Classifications

Flam. Liq. 3

Storage Class Code

3 - Flammable liquids

WGK

WGK 2

Flash Point(F)

113.0 °F

Flash Point(C)

45 °C

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

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Certificates of Analysis (COA)

Lot/Batch Number
BCCL3727
BCCM2781
BCCL6696
BCCK1973
BCCK5570

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Jonel Steffen et al.
The British journal of ophthalmology, 98(1), 13-15 (2013-10-26)
To evaluate the diagnostic accuracy of methylene blue used as a non-invasive in vivo stain to detect ocular surface squamous neoplasia (OSSN). A test validation study was performed according to Standards for the reporting of diagnostic accuracy studies (STARD) guidelines
Xiaojuan Bai et al.
Langmuir : the ACS journal of surfaces and colloids, 29(9), 3097-3105 (2013-02-20)
ZnO1-x/graphene hybrid photocatalyst was prepared via a facile in-situ reduction of graphene oxide and ZnO1-x surface defect oxide. The hybrid photocatlayst showed enhanced photocatalytic activity for the photodegradation of methylene blue. The photocorrosion of ZnO1-x was successfully inhibited by graphene
Nicolaas Lucius Gerlach et al.
Journal of oral and maxillofacial surgery : official journal of the American Association of Oral and Maxillofacial Surgeons, 72(4), 666-671 (2014-02-01)
To establish the accuracy of cone-beam computed tomographic (CBCT) views in determining the position and diameter of the mandibular canal. Two freshly frozen cadaver heads, 1 dentate and 1 edentate, were used to acquire CBCT scans. Measurements on cross-sectional CBCT
Q R J G Tummers et al.
European journal of surgical oncology : the journal of the European Society of Surgical Oncology and the British Association of Surgical Oncology, 40(7), 850-858 (2014-05-28)
Despite recent developments in preoperative breast cancer imaging, intraoperative localization of tumor tissue can be challenging, resulting in tumor-positive resection margins during breast conserving surgery. Based on certain physicochemical similarities between Technetium((99m)Tc)-sestamibi (MIBI), an SPECT radiodiagnostic with a sensitivity of
Bram Vivijs et al.
Applied and environmental microbiology, 80(19), 6054-6061 (2014-07-27)
Some members of the family Enterobacteriaceae ferment sugars via the mixed-acid fermentation pathway. This yields large amounts of acids, causing strong and sometimes even lethal acidification of the environment. Other family members employ the 2,3-butanediol fermentation pathway, which generates comparatively
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