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Home > Encyclopedia > 2,4-Difluoroaniline

2,4-Difluoroaniline

2,4-Difluoroaniline structure

2,4-Difluoroaniline 

structure
  • CAS No:

    367-25-9

  • Formula:

    C6H5F2N

  • Chemical Name:

    2,4-Difluoroaniline

  • Synonyms:

    Benzenamine,2,4-difluoro-;Aniline,2,4-difluoro-;2,4-Difluorobenzenamine;2,4-Difluoroaniline;2,4-Difluorophenylamine;NSC 10297

  • Categories:

    Organic Chemistry  >  Organic Fluorine Compound

Description

dark red liquid


2,4-difluoroaniline is a dark reddish-purple liquid. (NTP, 1992)


2,4-difluoroaniline is a dark reddish-purple liquid. (NTP, 1992)

2,4-Difluoroaniline Basic Attributes

129.11

129.11

2802556

206-687-5

40P93L7KWD

10297

2941

DTXSID6025064

29214210

Characteristics

26

1.5

Clear brown Liquid

1.268 (NTP, 1992)

-7.5 °C

170 °C

145 °F

1.521

H2O: 1-5 g/100 mL at 20.55 ºC;Not miscible or difficult to mix.

Store below +30°C.

This chemical may be sensitive to prolonged exposure to air. (NTP, 1992). Water soluble.

Aryl Halides

Anilines are chemical bases. They neutralize acids to form salts plus water. These acid-base reactions are exothermic. The amount of heat that is evolved per mole of amine in a neutralization is largely independent of the strength of the amine as a base. Amines may be incompatible with isocyanates, halogenated organics, peroxides, phenols (acidic), epoxides, anhydrides, and acid halides. Flammable gaseous hydrogen is generated by amines in combination with strong reducing agents, such as hydrides.

Safety Information

6.1

UN 2941 6.1/PG 3

1

20/21/22-36/37/38

28-36/37/39-26-36

BX3680000

Xn,T,Xi

Toxic

Stable. Combustible. Incompatible with strong oxidizing agents, acids, acid chlorides, acid anhydrides.

P261-P280-P311

H302-H311-H331

This compound is combustible. (NTP, 1992)

Fires involving this compound can be controlled with a dry chemical, carbon dioxide or Halon extinguisher. (NTP, 1992)

Excerpt from ERG Guide 153 [Substances - Toxic and/or Corrosive (Combustible)]: As an immediate precautionary measure, isolate spill or leak area in all directions for at least 50 meters (150 feet) for liquids and at least 25 meters (75 feet) for solids. SPILL: Increase, in the downwind direction, as necessary, the isolation distance shown above. FIRE: If tank, rail car or tank truck is involved in a fire, ISOLATE for 800 meters (1/2 mile) in all directions; also, consider initial evacuation for 800 meters (1/2 mile) in all directions. (ERG, 2016)

SMALL SPILLS AND LEAKAGE: If you spill this chemical, FIRST REMOVE ALL SOURCES OF IGNITION. Then, use absorbent paper to pick up all liquid spill material. Seal the absorbent paper, as well as any of your clothing which may be contaminated, in a vapor-tight plastic bag for eventual disposal. Wash any surfaces you may have contaminated with a soap and water solution. Do not reenter the contaminated area until the Safety Officer (or other responsible person) has verified that the area has been properly cleaned. STORAGE PRECAUTIONS: You should keep this material in a tightly closed container under an inert atmosphere, and store it at refrigerated temperatures. STORE AWAY FROM SOURCES OF IGNITION. (NTP, 1992)

RECOMMENDED RESPIRATOR: Where the neat test chemical is weighed and diluted, wear a NIOSH-approved half face respirator equipped with an organic vapor/acid gas cartridge (specific for organic vapors, HCl, acid gas and SO2) with a dust/mist filter. (NTP, 1992)

Drug Information

ACUTE/CHRONIC HAZARDS: This compound may be irritating to tissues. (NTP, 1992)

EYES: First check the victim for contact lenses and remove if present. Flush victim's eyes with water or normal saline solution for 20 to 30 minutes while simultaneously calling a hospital or poison control center. Do not put any ointments, oils, or medication in the victim's eyes without specific instructions from a physician. IMMEDIATELY transport the victim after flushing eyes to a hospital even if no symptoms (such as redness or irritation) develop. SKIN: IMMEDIATELY flood affected skin with water while removing and isolating all contaminated clothing. Gently wash all affected skin areas thoroughly with soap and water. If symptoms such as redness or irritation develop, IMMEDIATELY call a physician and be prepared to transport the victim to a hospital for treatment. INHALATION: IMMEDIATELY leave the contaminated area; take deep breaths of fresh air. If symptoms (such as wheezing, coughing, shortness of breath, or burning in the mouth, throat, or chest) develop, call a physician and be prepared to transport the victim to a hospital. Provide proper respiratory protection to rescuers entering an unknown atmosphere. Whenever possible, Self-Contained Breathing Apparatus (SCBA) should be used; if not available, use a level of protection greater than or equal to that advised under Protective Clothing. INGESTION: DO NOT INDUCE VOMITING. If the victim is conscious and not convulsing, give 1 or 2 glasses of water to dilute the chemical and IMMEDIATELY call a hospital or poison control center. Be prepared to transport the victim to a hospital if advised by a physician. If the victim is convulsing or unconscious, do not give anything by mouth, ensure that the victim's airway is open and lay the victim on his/her side with the head lower than the body. DO NOT INDUCE VOMITING. IMMEDIATELY transport the victim to a hospital. (NTP, 1992)

2,4-difluoroaniline

2,4-Difluoroaniline Use and Manufacturing

Methods of Manufacturing

1.2, 4-Difluoronitrobenzene reduction method: Add iron powder and ammonium chloride aqueous solution into the reduction kettle. After heating to reflux, add 2, 4-difluoronitrobenzene dropwise, and reflux for 2h after adding, and the reaction is complete. After steam distillation, the distillate is separated and dried with calcium chloride, qualified products can be obtained with a yield of 87%. 2. It is obtained from 1, 2, 4-trichlorobenzene through nitration, fluorination and reduction and dechlorination; or from m-phenylenediamine through diazotization, replacement, nitration and reduction.

Uses

2,4-Difluoroaniline is an intermediate in organic synthesis. It is used in the synthesis of difluorophenylsalicylic acid and polyfluridic acid in medicine. Fluphenylsalicylic acid is a carboxylic acid non-steroidal anti-inflammatory drug, and the international non-proprietary drug name (INN) is Diflunisal. The structure of this new derivative of salicylic acid does not contain aspirin~"s acetyl group but contains difluorophenyl, so the anti-platelet side effects are small, and the gastrointestinal reaction is slight, the action time can be maintained for 8-12h, it may be salicylic acid The most promising species in the class of drugs. It is also an important intermediate for pesticides.

Benzenamine, 2,4-difluoro-: ACTIVE

Computed Properties

Molecular Weight:129.11
XLogP3:1.5
Hydrogen Bond Donor Count:1
Hydrogen Bond Acceptor Count:3
Exact Mass:129.03900549
Monoisotopic Mass:129.03900549
Topological Polar Surface Area:26
Heavy Atom Count:9
Complexity:97.1
Covalently-Bonded Unit Count:1
Compound Is Canonicalized:Yes

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