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Merck
CN

50484

Methylene Blue solution

suitable for microbiology

Synonym(s):

Ehrlich’s reagent III, Loeffler’s Methylene Blue

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About This Item

Empirical Formula (Hill Notation):
C16H18ClN3S
CAS Number:
Molecular Weight:
319.85
UNSPSC Code:
12171500
NACRES:
NA.47
PubChem Substance ID:
MDL number:
Beilstein/REAXYS Number:
3641570
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shelf life

limited shelf life, expiry date on the label

concentration

0.5% in H2O (0.5 g/100 mL)

technique(s)

microbe id | staining: suitable

application(s)

microbiology

suitability

Bacillus spp., Corynebacterium spp., bacteria

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

General description

Methylene Blue was earlier recognized as a good nuclear stain, the staining solutions are always either aged or alkalized, if not both. More importantly it is an excellent stain for ribonucleic acid, which is the important stainable constituent of bacterial bodies, of lymphocyte and hemoportoal cytoplasm, and of nerve cell tigroid granules. It can also be employed in capsule stain. The capsule stain begins as a negative stain leaving the organisms colorless. The capsule are clearly seen as halo surrounding the bacterial cell. Another staining procedure is performed with nigrosin (Cat. No. 43925).

Other Notes

reagent contains:
methylene blue 0.5 g
distilled water 100 ml


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Storage Class

12 - Non Combustible Liquids

wgk

WGK 2

flash_point_f

Not applicable

flash_point_c

Not applicable

ppe

Eyeshields, Gloves



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