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Established in the year 1979, Alkyl Amines Chemicals Limited (AACL) has a remarkable timeline of 40+ years backing its claim of being one of the world leaders when it comes to manufacturing.

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General information

Trimethylamine is a colorless, hygroscopic and flammable tertiary amine having a fishlike odor at low concentrations changing to an ammonia-like odor at higher concentrations. It is a gas at room temperature but is usually sold as a 30% solution in water.


  • TMA Anhydrous
  • TMA 30



It is available as anhydrous (liquified gas under pressure) & 30% aqueous solution (clear colorless liquid).

Physical Properties

Empirical FormulaC3H9N
Structural Formula(CH3)3N
Molecular Wt.59.11
Sp. Gr. at 20ºCFor Anhydrous
For 30% Soln.
Boiling Point2.9°C37-39°C
Freezing Pointbelow -115°Cbelow 5°C
Solubility in waterSolubleSoluble
Flash Point (closed cup)-below 0°C


ContentUnitAnhydrous30% Solution
TMA%99.50 min.30.00 min.
Water%00.20 max.70.00 max.
Ammonia%00.05 max.00.03 max.
Other Amines / Nol%00.30 max.00.20 max.
  • IMDG ClassTMA (Anhydrous) Class 2
    TMA (Solution) Class 3
  • UN Code No.TMA (Anhydrous) 1083
    TMA (Solution) 1297
  • HSN Code.2921.11.90
  • CAS No.75-50-3


  • applications
    Animal Feed

    Animal / poultry feed additive like choline chloride is manufactured from TMA.

  • applications

    Choline derivatives manufactured from TMA are used in the medication of liver disorders. Used directly as an acid binder in the manufacture of sulpha drugs.

  • applications
    Ion Exchange

    To manufacture ion-exchange resins based on Chloromethylated Polystyrene.

  • applications
    Agro Chemicals

    To manufacture plant growth controllers like Cycocel or Chloromequat Chloride and herbicides like profenophos.

  • applications
    Surface Active Agents

    Used in the manufacture of Alkyl Quaternary Ammonium salts used as germicides and fabric softeners with antistatic properties.

  • applications

    Acceleration of polymerization of Methyl Methacrylate derivative. Quaternary ammonium salts of Trimethylamine are used as phase transfer catalysts.


  • TMA anhydrous should be stored in a suitably designed pressure vessel. TMA solution drums should be stored in a cool, well-ventilated area away from sources of ignition. Avoid contact with copper and its alloys.

Health & Safety

  • Trimethylamine is irritating to the skin, eyes, and mucous membrane. In case of inhalation, the victim should be moved to fresh air and oxygen should be administered.
  • In case of ingestion, the victim should be made to consume copious quantities of milk and water. Medical advice should be sought at once.
  • Personal protective equipment should always be used while handling.


All data, statements and recommendations contained in this publication are based upon the information available and are believed to be reliable. However, all such data, statements and recommendations are given gratis and Alkyl Amines Chemicals Ltd. assumes no obligation or liability, and makes no warranty, either express or implied, with regard to the data, statements and recommendations given or the application of the products covered in this publication, or the results obtained; all such data, statements and recommendations being given and accepted at the user's risk. Nothing printed in this publication is to be construed as permission, or a recommendation, to practice any patented invention without a license.

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