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Methyl violet is a mutagen and mitotic poison, therefore concerns exist regarding the ecological impact of the release of methyl violet into the environment. Methyl violet has been used in vast quantities for textile and paper dyeing, and 15% of such dyes produced worldwide are released to environment in wastewater. Numerous methods have been ...
Methyl violet 2B (Tetramethylparosanilinium chloride, 4,4'-[(4-Imino-2,5-cyclohexadien-1-yliden)methylen]bis(N,N-dimethylaniline)hydrochloride) is a violet triarylmethane dye from the group of cationic dyes and an essential component of C.I. Basic Violet 1 (trivial name methyl violet). Methyl violets are mixtures of tetramethyl (2B ...
p-Dimethylaminobenzophenone is related to Michler's ketone, but with only one amine. [5] Auramine O, a dye, is a salt of the iminium cation [(CH 3) 2 NC 6 H 4] 2 CNH 2 +.Michler's thione, [(CH 3) 2 NC 6 H 4] 2 CS, is prepared by treatment of Michler's ketone with hydrogen sulfide in the presence of acid or sulfideing auramine O. [6] Hydride reduction of Michler's ketone gives 4,4'-bis ...
The name gentian violet was originally used for a mixture of methyl pararosaniline dyes (methyl violet), but is now often considered a synonym for crystal violet. The name refers to its colour, being like that of the petals of certain gentian flowers; it is not made from gentians or violets .
Methyl violet 2B: Gentian violet B Basic violet 1 42535 triarylmethane 8004-87-3: Methyl violet 6B: 42536 triarylmethane 84215-49-6: Methyl yellow: Butter yellow Solvent yellow 2 11020 azo 60-11-7: Methylene blue: Swiss blue Basic blue 9 Solvent blue 8 52015 thiazin 61-73-4: Methylene green: Basic green 5 52020 thiazin 2679-01-8: Milling red FR ...
Paper form: It is a strip of coloured paper which changes colour to red if the solution is acidic and to blue, if the solution is basic. The strip can be placed directly onto a surface of a wet substance or a few drops of the solution can be dropped onto the universal indicator using dropping equipment.
Robert F. Kennedy Jr., President-elect Donald Trump's pick to lead the Department of Health and Human Services, is set to head to Capitol Hill next week for meetings with multiple senators ...
The permanence and water-resistance of the iron and gall-nut formula made it the standard writing ink in Europe for over 1,400 years, and in America after European colonisation. Its use and production started to decline only in the 20th century, when other waterproof formulas (better suited for writing on paper) became available.
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