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What stains did Walther Flemming use to stain cells?
Walther Flemming made use of aniline dyes to find a structure in the cell nucleus which strongly absorbed basophilic aniline dyes, which he named chromatin (later called chromosomes). Basophilic is a technical term used by histologists. It describes the microscopic appearance of cells and tissues, as seen down the microscope, after a histological section has been stained with a basic dye. The most common such dye is haematoxylin.
What happens in each indivdual hair shaft when an aniline derivative tint is mixed with hydrogen peroxide?
When an aniline derivative tint is mixed with hydrogen peroxide, the tint penetrates the hair shaft and swells the cuticle to allow the dye molecules to enter. The hydrogen peroxide then oxidizes the dye molecules, creating a chemical reaction that changes the hair color. This process permanently alters the hair color by depositing new pigment molecules within the hair shaft.
What is maximum wavelength for cibacron Yellow FN2R dye?
The maximum wavelength for cibacron Yellow FN2R dye is typically around 420-430 nm.
Why is pyridine more basic than aniline?
Pyridine is more basic than aniline primarily due to the presence of the nitrogen atom in a sp² hybridized aromatic ring in pyridine, which allows it to donate its lone pair of electrons more effectively. In contrast, aniline's nitrogen is part of an amine group attached to a benzene ring, where the lone pair is partially delocalized into the aromatic system, making it less available for protonation. This delocalization in aniline reduces its basicity compared to the more localized lone pair on the nitrogen in pyridine.
Which of the dyes in screen methyl orange is more soluble in water?
Methyl orange is an azo dye that exists in two forms: an acidic red form and a basic yellow form. The basic yellow form is more soluble in water compared to the acidic red form because it is anionic and can form hydrogen bonds with water molecules.
Is aniline a dye?
no
Founder of the aniline dye industry?
smith
Who was the English chemist that discovered a brilliant dye that could be made from coal and was the founder of the aniline dye industry?
Sir William Henry Perkin FRS (March 12, 1838 - July 14, 1907) was an English chemist best known for his discovery, at the age of 18, of the first aniline dye, mauveine. This dye could be made from coal. Perkin also founded the aniline dye industry.
Who was the English chemist who discovered a brilliant dye that could be made from coal founder of the aniline dye industry?
William Perkin
How would you identify if there is an aniline derivative tint in the hair?
Aniline derivatives typically produce a reddish tint in hair. To identify if a hair dye contains an aniline derivative, you can check the ingredient list for common derivatives like p-phenylenediamine (PPD) or related compounds. A patch test can also help determine if the hair dye contains an aniline derivative and if it may cause a reaction.
What his discovery was by William Henry perkin?
Sir William Henry Perkins FRS (March 12, 1838 - July 14, 1907) was an English chemist best known for his discovery, at the age of 18, of the first aniline dye, maven. This dye could be made from coal. Perkins also founded the aniline dye industry
Which is more basic aniline or p-nitroaniline?
Aniline is more basic than p-nitroaniline because the presence of a nitro group (-NO2) in p-nitroaniline decreases its basicity by withdrawing electron density from the amino group. Aniline, on the other hand, lacks this electron-withdrawing group, making it more basic.
How do you get orange dye in RuneScape?
use a red dye on a yellow dye to get orange dye
What stains did Walther Flemming use to stain cells?
Walther Flemming made use of aniline dyes to find a structure in the cell nucleus which strongly absorbed basophilic aniline dyes, which he named chromatin (later called chromosomes). Basophilic is a technical term used by histologists. It describes the microscopic appearance of cells and tissues, as seen down the microscope, after a histological section has been stained with a basic dye. The most common such dye is haematoxylin.
Is Safranin dye is acidic or basic?
Safranin dye is basic. It is a cationic dye that carries a positive charge, making it basic in nature.
What is an aniline?
Aniline is a colorless to pale yellow liquid chemical compound that is aromatic and a primary amine. It is commonly used in the production of various dyes, pharmaceuticals, and rubber products. Aniline is toxic and can be harmful if not handled carefully.
What color dye do you use if you want do dye white socks yellow?
Yellow
