What is P-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.

Is nitroaniline an acid?

3-Nitroaniline is an aniline carrying a nitro functional group in position 3. It is stable in neutral, acidic or alkaline solutions and is classified as not readily biodegradable with low bioaccumulation potential.

Is P-nitroaniline soluble?

Insoluble in water. This chemical is sensitive to moisture. Special Hazards of Combustion Products: Toxic oxides of nitrogen may form in fire.

What is nitroaniline soluble in?

4-Nitroaniline, p-nitroaniline or 1-amino-4-nitrobenzene is an organic compound with the formula C6H6N2O2. … 4-Nitroaniline.

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 (20C)
Magnetic susceptibility () -66.4310 6 cm3/mol

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.

How do you convert aniline to p-nitroaniline?

Aniline when treated with acetoacetate will produce Nacetyl aniline. This if treated with H2SO4/HNO2/CH3COOH will produce paranito nacetyl aniline, which on hydrolysis will give para nito aniline.

Is p-nitroaniline an acid or base?

Secondly, aniline and p-nitroaniline (first two green shaded structures) are weaker bases due to delocalization of the nitrogen non-bonding electron pair into the aromatic ring (and the nitro substituent).

Is 3 nitroaniline acidic or basic?

The 3-nitroaniline is an organic base; there is a lone pair of electrons on the nitrogen atom of the amino group, making 3-nitroaniline a Lewis base (an electron pair donor). Under these conditions biphenyl has neither an acidic proton nor a lone pair of electrons to donate, and is considered a neutral compound.

Why p-nitroaniline is less basic than aniline?

on the other hand, p-nitroaniline has an electron withdrawing group in the para position and due to these EWG the lone pair of NH2 is more stabilized by resonance and availability of the lone pair becomes less than that of aniline. that’s why aniline is more basic than p-nitro aniline.

Why is P nitroaniline more polar than O nitroaniline?

The proximity of amino and nitro functional groups in o-nitroaniline results in intramolecular hydrogen bonding, making the molecule less polar. … These differences give o- and p-nitroaniline their unique uses, therefore it is very important to separate them.

What is biphenyl used for?

Biphenyl is used in organic syntheses, heat transfer fluids, dye carriers, food preservatives, as an intermediate for polychlorinated biphenyls, and as a fungistat in the packaging of citrus fruits.

Is 2 nitroaniline soluble in water?


Solubility in water 0.117 g/100 ml (20C) (SIDS)
Acidity (pKa) -0.3 (of anilinium salt)
Magnetic susceptibility () -66.4710 6 cm3/mol

What is the melting point of 2 nitroaniline?

70.0C to 74.0C Specifications

Quantity 5g
Melting Point 70.0C to 74.0C
Flash Point 168C
Infrared Spectrum Authentic
Color Orange to Brown

What is the pKb value of 4 nitroaniline?

12.99 4-Nitroaniline

Formula C6H6N2O2
Refractive index 1.5401 (160 C)
pKa/pKb 12.99 (pKb)
Partition coefficient, pKow 1.39

What is the Iupac name of P toluidine?


PubChem CID 7813
Structure Find Similar Structures
Chemical Safety Laboratory Chemical Safety Summary (LCSS) Datasheet
Molecular Formula C7H9N or C6H4CH3NH2
Synonyms p-Toluidine 4-Methylaniline 106-49-0 4-Toluidine 4-Methylbenzenamine More…

Why is P nitroaniline Coloured?

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.

What is melting point of P Nitroacetanilide?

215 C Nitroacetanilide

Melting point 215 C (419 F; 488 K)
Boiling point 408.9 C (768.0 F; 682.0 K)
Main hazards Irritant

Why does P Nitro Acetanilide recrystallized in ethanol but the O Acetanilide remains in the filtrate?

o-Nitroacetanilide remains in the filtrate due to its high solubility in water.

How do you convert aniline to nitrobenzene?


  1. First convert aniline to diazonium chloride salt using NaNO2+HCL.
  2. Use H3PO3 to remove the N2^Cl^- group from diazonium chloride salt & results to a simple benzene.
  3. Convert benzene to nitrobenzene by using the nitrating mixture i.e conc.HNO3+H2SO4.

How do you convert aniline to p Bromoaniline?

Aniline is heated with acetic anhydride to form acetanilide. Treatment with bromine/acetic acid gives p-bromoacetanilide. Acid/alkaline hydrolysis gives p-bromoaniline.

How will you get p-nitroaniline as major product from aniline?

Nitration: Direct nitration of aniline yields (p-nitroaniline) a mixture of ortho, meta, and para nitroanilines. In an acidic medium the -NH2 group is protonated to the -N+H3 group which is meta-directing and deactivating. Hence, a considerable amount of m-nitroaniline is obtained.