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    2-Nitroaniline structure

    2-Nitroaniline

    • CAS No:

      88-74-4

    • Formula:

      C6H6N2O2

    • Synonyms:

      ONA;NSC 9796;2-Nitroani;devolorangeb;o-Nitranilin;o-Nitroanilin;orangegrssalt;O-NITRANILINE;2-Nitroanilin;Devol Orange B

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    Description

    orange solid

    Basic Attributes

    • 88-74-4

    • C6H6N2O2

    • 138.12

    • 138.042923

    • 71.8 A^2

    • 1.44

    • 201-855-4

    • DPJCXCZTLWNFOH-UHFFFAOYSA-N

    • 3

    • 1

    • 0

    Characteristics

    • Orange to brown Crystals or Flakes

    • 1.44 g/cm³

    • 70-73 °C(lit.)

    • 284 °C(lit.)

    • 168 °C

    • 1.634

    • H2O: 1.1 g/L (20 ºC);methanol: 0.1 g/mL, clear

    • 2-8°C

    • Vapour pressure, Pa at 20°C: 4

    • 4.77 (NTP, 1992) (Relative to Air)

    • 509275

    • Stable. Incompatible with acids, acid chlorides, acid anhydrides, strong oxidizing agents, chloroformates, hexanitroethane.

    Safety Information

    • II

    • 6.1

    • 29214210

    • UN 1661 6.1/PG 2

    • 2

    • 23/24/25-33-52/53-39/23/24/25-11

    • 28-36/37-45-61-28A-16-7

    • BY6650000

    • T,F

    • The warehouse is ventilated at low temperature and dry; stored separately from oxidants, acids and food additives

    • P261-P273-P280-P301 + P310-P311

    • H301-H311-H331-H373-H412

    • Open flame is flammable; burning produces toxic nitrogen oxide fumes

    • Oral-rat LD50: 1600 mg/kg; Oral-Mouse LD50: 1070 mg/kg

    • moderately toxic

    Product Usage

    Dyestuff intermediate.

    Production Methods

    The preparation method is obtained by ammonolysis of o-chloronitrobenzene. The process is carried out continuously in a high-pressure pipeline reactor at a pressure of 14.7 MPa and a temperature of 230°C. When o-chloronitrobenzene and ammonia enter the reaction pipeline, they stay for 20 minutes The pressure is reduced to 98kPa by the pneumatic membrane regulating valve once, and then enters the expansion tank for evaporation and deamination. The evaporated ammonia enters the ammonia absorption pipe through the jet pump for circulation and absorption. After adding part of the liquid ammonia, it is continued to be used for ammonia desorption and removal. The material of ammonia can be obtained after post-processing.

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