dye

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dye

 [di]
any of various colored substances containing auxochromes and thus capable of coloring substances to which they are applied; used for staining and coloring, as test reagents, and as therapeutic agents.

dye

(),
A stain or coloring matter; a compound consisting of chromophore and auxochrome groups attached to one or more benzene rings, its color being due to the chromophore and its dyeing affinities to the auxochrome. Dyes are used for intravital coloration of cells, staining tissues and microorganisms, as antiseptics and germicides, and some as stimulants of epithelial growth. For individual dyes, see the specific names. Commonly but improperly used for radiographic contrast medium.
[A.S. deah, deag]

dye

(di) any colored substance containing auxochromes and thus capable of coloring substances to which it is applied; used for staining and coloring, as a test reagent, and as a therapeutic agent.
acid dye , acidic dye one which is acidic in reaction and usually unites with positively charged ions of the material acted upon.
amphoteric dye  one containing both reactive basic and reactive acidic groups, and staining both acidic and basic elements.
anionic dye  acid d.
basic dye  one which is basic in reaction and unites with negatively charged ions of the material acted upon.
cationic dye  basic d.

dye

[dī]
Etymology: AS, deag
1 v, to apply coloring to a substance.
2 n, a chemical compound capable of imparting color to a substance to which it is applied. Various dyes are used in medicine as stains for tissues, test reagents, therapeutic agents, and coloring agents in pharmaceutic preparations.

dye

()
A stain or coloring matter; a compound consisting of chromophore and auxochrome groups attached to one or more benzene rings, its color being due to the chromophore and its dyeing affinities to the auxochrome. Dyes are used for intravital coloration of living cells, staining tissues and microorganisms, as antiseptics and germicides, and some as stimulants of epithelial growth. Commonly used term for radiographic contrast medium.
[A.S. deah, deag]

dye

()
A stain or coloring matter. Commonly but improperly used to mean radiographic contrast medium.
[A.S. deah, deag]

dye

any of various colored substances containing auxochromes and thus capable of coloring substances to which they are applied; used for staining and coloring, as test reagents, and as therapeutic agents.

acridine dye
acriflavine and proflavine are antiseptic dyes.
azo dye
dyes like scarlet red and phenazopyridine are used as antiseptics to be applied topically or as urinary antiseptics.
diagnostic dye
several diagnostic test procedures involve the administration of a dye and determination of the rate of excretion, either by measuring levels remaining in the body or amounts excreted in the urine, feces, etc. Examples are the bromsulfthalein (BSP) test for liver function, and the phenolsulfonphthalein (PSP) renal function test.
dye dilution method
the standard method of measuring circulating plasma volume; based on the degree of dilution of a physiologically inert dye injected intravenously.
vital dye
see vital stain.

Patient discussion about dye

Q. Has anyone had an allergic reaction to gadolinium dye, MRI contrast agents, I have had a severe reaction. I would like to know the long term effects of this dye. And if anyone else has had or heard of problems and reactions to it. Please answer me. Thank you

A. In 1969 I almost died from the IVP dye. I had no idea I was allergic and when I awoke I was in a "recovery room." The doctor told me to always tell any physicians/paramedics etc of my allergy status regarding the dye. I now have chronic back pain, have a history of cancer in the family and the doctor wants to do a scan (including dye) but when I emphasized that I was allergic he backed off. Now I am wondering if there is anything else that can be done to test the bone (scan) without the dye. Any answers? Thanks

More discussions about dye
References in periodicals archive ?
Color fastness: ISO-105-J03 (AATCC 2002) [24] was used to measure color values of standard and dyed samples.
Chicks are dyed in every color and are sold for TL 10.
Reflectance spectrophotometer (Macbeth CE7000A) was used for the measurement of colour strength (K/S) of lyocell dyed fabric.
Some years ago, the buyers from London and other western countries refused the textiles dyed with benzene.
You can show the acid-base nature of the interaction between wool and food dyes by heating dyed fabric for a couple of minutes in a moderately alkaline 1% solution of 'washing soda' (sodium carbonate).
Laursen and Zhang soaked their dyed silk samples in hydrochloric acid, EDTA, or formic acid, extracted the flavonoids, and chemically characterized the compounds.
The grey-blue I dyed a deeper blue (you can't go lighter--you have to dye darker, and if it has a color already, be prepared to apply color theory--you know, blue plus red equals purple, etc.
Many shirts can be made in white but dyed at the last minute when the specific colour orders come in.
Currently, cotton fabrics has to be dyed before a no-wrinkle finish is applied because the chemical bond created by the finishing process repels dyes.
Cationization of cotton with quaternary ammonium compound (both pre-treatment and post-treatment) and post-finishing with soft polyurethane emulsion has enhanced the fastness properties, tensile strength as well as relative colour strength (K/S) , whereas, reactive UV absorber based on oxalanilide and heterocyclic compound as UV absorber greatly increased the light fastness of alkanet dyed cotton.
Several fabrics were dyed using both conventional and new method under investigation and comparison was made in terms of rubbing fastness washing fastness and colour difference properties.