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Methylene blue is also used as a dye in chromoendoscopy, and is sprayed onto the mucosa of the gastrointestinal tract in order to identify dysplasia, or pre-cancerous lesions. Intravenously injected methylene blue is readily released into the urine and thus can be used to test the urinary tract for leaks or fistulas.
The quaternary ammonium salts of these sulfonic acids are used as solvent dyes because of their solubility in organic solvents, such as Solvent Blue 38 and Solvent Blue 48. The dye derived from cobalt phthalocyanine and an amine is Phthalogen Dye IBN. 1,3-Diiminoisoindolene, the intermediate formed during phthalocyanine manufacture, used in ...
The dye is filtered rapidly by the kidneys from the blood, and colors the urine blue. However, the dye can cause a potentially dangerous acute increase in blood pressure in some cases. [8] Indigo carmine stain is not absorbed into cells, so it is applied to tissues to enhance the visibility of mucosa.
Indigo dye is an organic compound with a distinctive blue color. Indigo is a natural dye obtained from the leaves of some plants of the Indigofera genus, in particular Indigofera tinctoria. Dye-bearing Indigofera plants were once common throughout the world. It is now produced via chemical routes.
Blue dye No. 1 and yellow dye No. 6 may also be toxic to some human cells, according to a 2015 study. Of the seven artificial dyes , green dye No. 3 is the least used, according to the ...
Brilliant blue FCF (Blue 1) is a synthetic organic compound used primarily as a blue colorant for processed foods, medications, dietary supplements, and cosmetics. [1] It is classified as a triarylmethane dye and is known under various names, such as FD&C Blue No. 1 or acid blue 9.
The formation of the complex stabilises the negatively charged anionic form of the dye, producing the blue colour, even under acid conditions when most of the molecules in solution are in the cationic form. [8] This is the basis of the Bradford assay, which quantifies protein by Coomassie brilliant blue dye binding. The binding of the dye to a ...
Copper phthalocyanine ("phthalo blue") is a synthetic blue pigment frequently used in paints, inks, and dyes. It is highly valued for its superior properties such as light fastness, tinting strength, covering power and resistance to the effects of alkalis and acids. It has the appearance of a blue powder, insoluble in most solvents including ...