4-nitroaniline

P-nitroaniline, yellow needle like crystal, highly toxic and easy to sublimate. Slightly soluble in cold water, soluble in boiling water, ethanol, ether, benzene and acid solution. It is a synthetic chemical widely used in the dye industry. It is an intermediate of a variety of printing and dyeing and pharmaceutical chemicals. It can also be used as an analytical reagent. Protective measures shall be worn during operation to avoid release to the environment.

Chinese Name: p-nitroaniline

English Name: p-nitroaniline

Alternative name: 4-nitroaniline; 1-amino-4-nitrobenzene

Chemical formula: C6H6N2O2

Molecular weight: 138.12

CAS accession No.: 100-01-6

EINECS login No.: 202-810-1

Melting point: 148-149 ℃

Boiling point: 332 ℃

Water solubility: slightly soluble in cold water, soluble in boiling water

Density: 1.424g/ml

Appearance: yellow needle crystal

Flash point: 199 ℃

Application: used as intermediates of dyes, pesticides and antioxidants, and also as analytical reagents

Safety Description: wear appropriate protective clothing and gloves to avoid release to the environment

Hazard symbol: R23 / 24 / 25 R33 R52 / 53

Hazard Description: toxic by inhalation, skin contact and ingestion, with cumulative effect and harmful to aquatic organisms

Dangerous goods transport number: UN 1661

Product use

P-nitroaniline is a very important intermediate in the dye industry. It can be directly used for the synthesis of varieties such as direct sun fast black G, direct green B, be, 2b-2n, black green Nb, direct gray D, acid black 10B, ATT, disperse red p-4g, Yangli dark yellow 2RL, Fur Black D, p-phenylenediamine, o-chloro-p-nitroaniline, 2.6-dichloro-4-nitroaniline, 5-nitro-2-chlorophenol, etc. it can also be used for the synthesis of pesticides such as chlornitramine and medical kalimax; At the same time, it is also the raw material of antioxidant, light stabilizer and developer. The disperse dyes synthesized abroad with p-nitroaniline as diazo component include: C, I disperse orange 1, 3, 7, 21, red 1, 2, 7, 17, blue 259; Black 2, 3, 28, 29, etc.

This product is ice dyed dye bright red GG color base, which can be used as black salt K for dyeing and printing of cotton and linen fabrics. But it is mainly used as an intermediate of azo dyes, such as direct dark green B, acid mordant Brown g, acid black 10B, acid wool ATT, Fur Black D and direct gray D. It can also be used as an intermediate of pesticides and veterinary drugs. In the pharmaceutical industry, it can be used to produce niclosamide, carbamate, nitrodiazepam, quinoline urea sulfate, etc. It can also be used to produce p-phenylenediamine; Antioxidants and preservatives.