Acidic dye is defined as a negatively charged dye, which contains one or more acidic groups, such as a sulfo group. A basic dye, on the other hand, is a positively charged stain that is usually synthetic and reacts with negatively charged particles.Continue Reading
According to Reference.com, acidic dyes are divided into three classes based on their fastness requirements, level dyeing properties and economy. The class also depends on the fiber to be colored and the dying process. Acidic dyes are best for dying protein fibers such as wool, alpaca and mohair. However, in addition to animal hair, acidic dyes also are effective for dyeing silk and synthetic fibers, such as nylon.
According to Kolorjet, a manufacturer of a range of dyes and pigments, basic dyes consist of amino groups and are usually aniline dyes. They are not water soluble but become water soluble after conversion into a salt. At a chemical level, basic dyes are positively charged and consist of cation function groups, such as -NR3+ and NR2+. Because of its positive charge, basic dyes react well with materials that are negatively charged, or anionic. Additionally, basic dyes are known for producing brilliant colors that are often referred to as basic stains.Learn more about Chemistry
Though egg dye and vegetable food coloring are meant to stain, the dyes can be removed easily with household products. One way to remove egg dye is to simply rub the stain with vinegar. A paste made from baking soda and water also removes egg dye from skin.Full Answer >
Sudan IV is a reddish-brown fat soluble chemical dye used in research purposes to stain triglycerides and lipids in frozen paraffin samples. Sudan IV belongs to a group known as lysochromes, along with Sudan III, Oil Red O, Sudan Black B, which are all used for Sudan staining.Full Answer >
It has not been determined if red dye 40 is toxic to humans. Studies have been done to determine the effects of red dye 40 on rats and mice, but there is not conclusive evidence that the dye is toxic to humans, according to Healthline.Full Answer >
The elements of the periodic table in groups 1A to 8A are called the main-group elements. They are sometimes also called the representative elements and they are the most abundant in the universe.Full Answer >