Methyl blue




Not to be confused with methyl violet or methylene blue.






























































Methyl blue

Methyl blue.png

Methyl Blue 3D.png





Sample of Methyl Blue.jpg

Solid methyl blue
Methyl Blue aqueous solution.jpg

Methyl blue aqueous solution

Names
Other names
Cotton blue, Helvetia blue, Acid blue 93, C.I. 42780

Identifiers

CAS Number

  • 28983-56-4 ☑Y

3D model (JSmol)
  • Interactive image

ChemSpider

  • 8051359 ☑Y

ECHA InfoCard
100.044.852


PubChem CID
  • 9875677




Properties

Chemical formula

 C37H27N3Na2O9S3

Molar mass
 799.814 g/mol
Appearance
 red solid

Solubility in water

 Soluble in water, slightly soluble in ethanol
Hazards

NFPA 704


Flammability code 1: Must be pre-heated before ignition can occur. Flash point over 93 °C (200 °F). E.g., canola oil
Health code 1: Exposure would cause irritation but only minor residual injury. E.g., turpentine
Reactivity code 0: Normally stable, even under fire exposure conditions, and is not reactive with water. E.g., liquid nitrogen
Special hazards (white): no codeNFPA 704 four-colored diamond


1


1


0

Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).


☑Y verify (what is ☑Y☒N ?)

Infobox references

Methyl blue is a chemical compound with the molecular formula C37H27N3Na2O9S3. It is used as a stain in histology,[1] and stains collagen blue in tissue sections. It can be used in some differential staining techniques such as Mallory's connective tissue stain and Gömöri trichrome stain, and can be used to mediate electron transfer in microbial fuel cells. Fungal cell walls are also stained by methyl blue.


Methyl blue is also available in mixture with water blue, under name Aniline Blue WS, Aniline blue, China blue, or Soluble blue.



See also



  • Potassium ferrocyanide

  • Potassium ferricyanide

  • Methylene blue

  • Egyptian Blue

  • Han Purple

  • Gentian violet

  • Fluorescein



References





  1. ^ R. W. Sabnis (2010). Handbook of Biological Dyes and Stains: Synthesis and Industrial Applications. John Wiley & Sons. p. 24..mw-parser-output cite.citation{font-style:inherit}.mw-parser-output q{quotes:"""""""'""'"}.mw-parser-output code.cs1-code{color:inherit;background:inherit;border:inherit;padding:inherit}.mw-parser-output .cs1-lock-free a{background:url("//upload.wikimedia.org/wikipedia/commons/thumb/6/65/Lock-green.svg/9px-Lock-green.svg.png")no-repeat;background-position:right .1em center}.mw-parser-output .cs1-lock-limited a,.mw-parser-output .cs1-lock-registration a{background:url("//upload.wikimedia.org/wikipedia/commons/thumb/d/d6/Lock-gray-alt-2.svg/9px-Lock-gray-alt-2.svg.png")no-repeat;background-position:right .1em center}.mw-parser-output .cs1-lock-subscription a{background:url("//upload.wikimedia.org/wikipedia/commons/thumb/a/aa/Lock-red-alt-2.svg/9px-Lock-red-alt-2.svg.png")no-repeat;background-position:right .1em center}.mw-parser-output .cs1-subscription,.mw-parser-output .cs1-registration{color:#555}.mw-parser-output .cs1-subscription span,.mw-parser-output .cs1-registration span{border-bottom:1px dotted;cursor:help}.mw-parser-output .cs1-hidden-error{display:none;font-size:100%}.mw-parser-output .cs1-visible-error{font-size:100%}.mw-parser-output .cs1-subscription,.mw-parser-output .cs1-registration,.mw-parser-output .cs1-format{font-size:95%}.mw-parser-output .cs1-kern-left,.mw-parser-output .cs1-kern-wl-left{padding-left:0.2em}.mw-parser-output .cs1-kern-right,.mw-parser-output .cs1-kern-wl-right{padding-right:0.2em}










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