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hok tuih..
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Would water be a suiable solvent for every dye?
-Cationic dyes (basic dyes) are soluble in polar solvents such as water, alcohols -Nonionic Fat-soluble dyes line metal-free azo and anthraquinone dyes are soluble in aromatic and aliphatic hydrocarbons. -Metal-complex dyes are normally soluble in alcohols, ketones, glycoethers
Why azo dyes are resticted for textile dyeing printing?
The azo dyes that are restricted for textile use have been so restricted because they cause skin hypersensitivity and allergies. Not all azo dyes are so restricted--there are eleven azo dyes that are approved for use in food.
What are the uses of dyes?
clothing mugs mood rings
Why an acidic stain is used in negative staining?
Acidic dyes are negatively-charged dyes. Since bacteria are also negatively-charged, they will repel the acidic dyes. So, instead of staining the bacterium itself, it will be the background that will be colorized....
What color is the universal indicator in an alkali?
Many soluble dyes change their color with changes in pH (a measure of the concentration of acid in a solution). Such dyes may be used to indicate when the acid (base) in a solution has been neutralized by addition of an equal amount of base (acid). Each indicator dye has a particular range of pH for which it is useful. pH test strips and papers often incorporate two or more dyes to extend the range of pH over which they can be used. The best indicator dyes are strongly colored (so that only small amounts are needed), undergo an easily seen change with pH (either from one color to another, or from clear to colored), are nontoxic, and are chemically stable.
Why Azoic dye is restricted?
Azoic dyes are potentially harmful as they can be decomposed into one of 20 harmful aromatic amines in certain conditions. These amines are toxic, carcinogenic, irritating, allergenic, and environmentally harmful. Some types of azoic dyes are restricted or banned from use in textiles, especially those used for children's clothing and underwear.
How is fabric dyed in factories?
The textile materials are dyed or given color by means of various available dyes and pigments. There are various dyes such as reactive dyes,azoic dyes ,direct dyes,etc. The dyes are selected upon analyzing the properties of material to be dyed.
What types of synthetic dyes are there?
There are may types of dyes but these are the ones I know of. Acid dyes Azoic dyes Basic dyes Chrome dyes Mordant Developed dyes Direct dyes Disperse dyes Reactive dyes Sulphur dyes Vat dyes Raw fibres Velour cloth and furs Batik Tie dyeing BY MAX TURNER
What color is kellan lutz's hair?
Brownboth him and tom have brown eyes
What is a xanthene?
A xanthene is one of a group of tricyclic heterocycles which are the basis for a range of dyes such as fluorescein and eosin.
What has the author Shihoko Fukumoto written?
Shihoko Fukumoto has written: 'Shades of indigo blue' -- subject(s): Dyes and dyeing, Exhibitions, Indigo, Textile fibers 'Shihoko Fukumoto'
What is the effect of reactive dye on cotton?
Reactive Dyed material have good fastness properties. The cost of the material is comparatively lower then the Vat dyed material and also varieties of shades are available in Reactive dyes.
What hair colors does Natural Instincts provide?
The Natural Instincts hair dyes have many colors in different shades of blonde, red, and brunette. Among those colors are sunflower, hazelnut, rosewood and midnight.
What are maori dyes made from?
Maori dyes are traditionally made from natural materials such as plants, minerals, and insects. Some common sources for dyes include harakeke (flax), kōkōwai (red ochre), and kākāpō (a type of parrot) feathers. These natural materials are used to create a range of colors for traditional Maori weaving and clothing.
What types of dyes are used for different textile fibers Why?
vat dyes acid dyes
What is definition of forest based dyes?
the definition is that dyes like colors in the forest like dyes were base
What are UGS dyes?
Ukranian Gift Shop dyes
