Methylene Blue

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methylene blue

[′meth·ə‚lēn ′blü]
(organic chemistry)
Dark green crystals or powder; soluble in water (deep blue solution), alcohol, and chloroform; C16H18N3SCl·3H2 O used in medicine; (C16H18N3SCl)2·ZnCl2·H2 O used as a textile dye, biological stain, and indicator. Also known as methylthionine chloride.

Methylene Blue


an organic dye of the thiazine group, used in medicine as an antiseptic and as an antidote for certain types of poisoning.

Methylene blue is applied externally for irrigation and as an ointment for purulent skin conditions; it is taken internally to treat inflammations of the urinary bladder. In addition, it is administered intravenously in glucose solution for cases of hydrocyanic acid, carbon monoxide, and hydrogen sulfide poisoning. Industrially, methylene blue is used in coloring paper, as well as in pencils and printer’s ink.

References in periodicals archive ?
Methylene blue, the intravenous electron transfer dye used to reduce methaemoglobin, was administered.
Edvotek (2006) Instain[R] Methylene Blue instruction manual.
The use of methylene blue predates the Food and Drug Administration.
The resultant polymer decomposed methylene blue dye, and also showed the antibacterial activity under UV irradiation.
Three milliters of methylene blue aqueous solution, with a concentration of 10 ppm, was poured into a quartz glass cell (10 X 10 X 30 [mm.
The incorrect resection rate of parathyroid gland and incidence of temporary hypoparathyroidism in the methylene blue group were significantly higher than those of the nano-carbon group (t=4.
s, New Drug Application (NDA) for Methylene Blue MMX (MB MMX), the company said.
Methylene blue, first synthesized in 1876, out-performed three other antioxidants.
Methylene blue dye (5 cc of 1% dye) was injected in subareolar region 20 minutes prior to surgery.
1ml of each diluted sample was uniformly distributed and inoculated separately on Eosin Methylene Blue (EMB) agar medium, Salmonella-Shigella (SS) agar medium and MacConkey agar medium plates which were incubated at 37degC for 24hrs (James and Sherman, 2007).
5 g of AC3 were place in 150 ml flask containing 100 ml of 2 x 10-3 M of methylene blue (MB) adsorbate (pH 7).