How do you synthesize nitroaniline?
Place 30 g of p-nitroacetanilide and 150 ml of 70% H2SO4 (prepared by adding 100 ml conc. acid to 75 ml water carefully) in a round-bottomed flask. Reflux the mixture for 20-30 min. and pour the hot solution into 1000 ml of cold water.
How will synthesis p-nitroaniline from Acetanilide?
The organic compound p-nitroacetanilide is prepared from acetanilide through nitration. When acetanilide is treated with nitrating mixture that is a mixture of nitric acid and sulphuric acid p-nitroacetanilide is formed. Along with p-nitroacetanilide, o-nitroacetanilide is also formed as a minor product.
Why is p-nitroaniline colored?
Trouble is that traces of acid left will hydrolyze it into p-nitroaniline which has deep yellow to yellow-orange color (this compound has melting point of 146 -149 °C) and it smells like ammonia. Unfortunately, p-nitroaniline is difficult to remove from p-nitroacetanilide by crystallization.
Which nitroaniline is more polar O or p-nitroaniline explain briefly your answer?
Thus it was determined o-nitroaniline would be eluted further up by the appropriate solvent in TLC. Conversely, P-nitroaniline is more polar due to having its functional groups opposite to each other, a more polar molecule can interact to a greater extent with the silica stationary phase.
What is the nature of aniline?
Aniline is basic in nature.
What is the formula for 2-nitroaniline?
?) 2-Nitroaniline is an organic compound with the formula H 2 NC 6 H 4 NO 2. It is a derivative of aniline, carrying a nitro functional group in position 2. It is mainly used as a precursor to o-phenylenediamine.
What is the mobility of 2-nitroaniline in soil?
According to a classification scheme(2), this Koc value suggests that 2-nitroaniline is expected to have high mobility in soil. 2-Nitroaniline was found to have a Kd value of 8.4 L/kg in homoionic K+ Montmorillonite type soil(3).
What is 2-nitroaniline sulfonation?
Sulfonation is usually used to block the 4 position and increases the effectiveness to 56%. 2-Nitroaniline is the main precursor to phenylenediamines, which are converted to benzimidazoles, a family of heterocycles that are key components in pharmaceuticals.
Is there 2 nitroaniline in the river Waal?
SURFACE WATER: 2-Nitroaniline was qualitatively detected in the River Waal at Brakel in the Netherlands during monitoring conducted between 1972-1974(1). A 2-nitroaniline concn of 1 ppb was found in the Rhine River at Lobith, Netherlands in July 1979(2).