Is 4 nitroaniline a strong base?
Is 4 nitroaniline a strong base?
Although 4-dimethylaminopyridine (DMAP) might appear to be a base similar in strength to pyridine or N,N-dimethylaniline, it is actually more than ten thousand times stronger, thanks to charge delocalization in its conjugate acid.
What is the melting point of 4 nitroaniline?
147 °C
4-Nitroaniline/Melting point
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 density of 4 nitroaniline?
1.44 g/cm³
4-Nitroaniline/Density
Why is 4 nitroaniline weaker base than 3 nitroaniline?
Both compound have the same chemical formula and molecular weight. The 3 has an amine radical in the meta position and the 4 has an amine radical in the para position making it less ionic than the meta. This could explain the reason the 4 is a weaker base than the 3.
Is 4 nitroaniline flammable?
FIRE HAZARDS * p-Nitroaniline may explosively decompose in a fire. * Use dry chemical, CO2, water spray, or foam extinguishers.
Is 4 nitroaniline soluble in water?
4-Nitroaniline
| Names | |
|---|---|
| Melting point | 146 to 149 °C (295 to 300 °F; 419 to 422 K) (lit.) |
| Boiling point | 332 °C (630 °F; 605 K) |
| Solubility in water | 0.8 mg/ml at 18.5 °C (IPCS) |
| Vapor pressure | 0.00002 mmHg (20°C) |
What is the pKa of 4 nitroaniline?
12.99
4-Nitroaniline
| Properties. | |
|---|---|
| Formula | C6H6N2O2 |
| Surface tension | 46.7 g/s2 (151 C) |
| Refractive index | 1.5401 (160 C) |
| pKa/pKb | 12.99 (pKb) |
Which aniline is the weakest base?
Methyl amine, , is similar in strength to ammonia; phenyl amine or aniline, , is a weak base with a of only 4.63.
Is P nitroaniline toxic?
The compound is toxic by way of inhalation, ingestion, and absorption, and should be handled with care. Its LD 50 in rats is 750.0 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.
Is 4 nitroaniline a solid?
Yellow solid, ammonia-like odor.
Why aniline is a poor base?
Aniline only reluctantly accepts a proton to form the anilinium ion, and hence is a weak base. It is less reluctant to accept a proton on its nitrogen lone pair, and hence aliphatic amines are stronger bases.
What is the formula for 4-nitroaniline phenylamine?
4-Nitro-phenylamine. 4-Nitroaniline, p-nitroaniline or 1-amino-4-nitrobenzene is an organic compound with the formula C 6 H 6 N 2 O 2. 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,…
What is the standard state of 4 nitroaniline?
146 to 149 °C (295 to 300 °F; 419 to 422 K) (lit.) Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). ?) 4-Nitroaniline, p-nitroaniline or 1-amino-4-nitrobenzene is an organic compound with the formula C 6 H 6 N 2 O 2.
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.
What is the formula for para nitro aniline?
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.