Ehrlich has used a double stain with neutral red and methylene blue.
Bichloride of methylene has been used for ansthetic purposes.
In 48 hours bacteria appear and methylene blue is also reduced.
methylene blue can be reduced by the H2 and the hypophosphite oxidized.
As methylene blue contains no oxygen, its reduction consists in the addition of two atoms of hydrogen.
This reduction is brought about under conditions similar to those necessary for the reduction of dyes, such as methylene blue.
In the case of methylene blue, reduction consists in the addition of two hydrogen atoms.
If hydrogen sulphide is passed through a solution of methylene blue the dye is very quickly reduced and becomes colorless.
To this purpose a cold bath is prepared with only so much methyl violet or methylene blue, as to give the water a very faint tint.
Chloride of methylene is a colourless mobile fluid, having a smell like chloroform, and a burning taste.
methylene meth·yl·ene (měth'ə-lēn')
n.
A bivalent hydrocarbon radical, CH2, that is a component of unsaturated hydrocarbons and is derived from methane by the removal of two hydrogen atoms.
