What is the pKb value of 4 nitroaniline?
12.99
4-Nitroaniline
| Properties. | |
|---|---|
| Formula | C6H6N2O2 |
| Refractive index | 1.5401 (160 C) |
| pKa/pKb | 12.99 (pKb) |
| Partition coefficient, pKow | 1.39 |
What is the Colour of 4 nitroaniline?
4-Nitroaniline
| Names | |
|---|---|
| Appearance | yellow or brown powder |
| Odor | faint, ammonia-like |
| Density | 1.437 g/ml, solid |
| Melting point | 146 to 149 °C (295 to 300 °F; 419 to 422 K) (lit.) |
What is nitroaniline used for?
p-Nitroaniline is a bright yellow powder with a faint Ammonia-like odor. It is used as an intermediate in the manufacture of dyes, pharmaceuticals and pesticides.
Is 4 nitroaniline soluble in ether?
Physical and Chemical Properties Soluble in ethanol, methanol, ether, benzene. Insoluble in water.
What is the pKb value of aniline?
The pKb values of ammonia, methenamine and benzenamine (aniline) are 4.75, 3.38 & 9.38 respectively.
What is the functional group of 4 nitroaniline?
4-Nitroaniline, p-nitroaniline or 1-amino-4-nitrobenzene is an organic compound with the formula C6H6N2O2. It is an organic chemical compound, consisting of a benzene ring in which an amino group is para to a nitro group.
What is the melting point of 4 nitroaniline?
296.6°F (147°C)
4-Nitroaniline/Melting point
What is pKb value?
pKb is the negative base-10 logarithm of the base dissociation constant (Kb) of a solution. It is used to determine the strength of a base or alkaline solution. Kb = [B+][OH-]/[BOH] pKb = -log Kb. A large Kb value indicates the high level of dissociation of a strong base.
What is the pKb of CH3NH2?
Question: Methylamine, CH3NH2, is a weak base(pKb=3.38 at 25oC).
What is the density of 4 nitroaniline?
1.44 g/cm³
4-Nitroaniline/Density
What is the structure of 4 nitroaniline?
What kind of chemical compound is 4-nitroaniline?
4-Nitroaniline. It is an organic chemical compound, consisting of a benzene ring in which an amino group is para to a nitro group. This chemical is commonly used as an intermediate in the synthesis of dyes, antioxidants, pharmaceuticals, and gasoline, in gum inhibitors, poultry medicines, and as a corrosion inhibitor.
How is 4-nitrophenyl-β-alanine a crystalline product?
A crystalline N – (4-nitrophenyl)-β-alanine by reacting with acrylic acid. Product of chromogenic reactions. Our team of scientists has experience in all areas of research including Life Science, Material Science, Chemical Synthesis, Chromatography, Analytical and many others.
What is the LD 50 of 4-nitroaniline?
Its LD 50 in rats is 750 mg/kg when administered orally. 4-Nitroaniline is particularly harmful to all aquatic organisms, and can cause long-term damage to the environment if released as a pollutant. ^ a b c dNIOSH Pocket Guide to Chemical Hazards. “#0449”.
How to make 4-nitroaniline from aniline?
Below is a laboratory synthesis of 4-nitroaniline from aniline. The key step in this reaction sequence is an electrophilic aromatic substitution to install the nitro group para to the amino group. The amino group can be easily protonated and become a meta director. Therefore, a protection of the acetyl group is required.