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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

2,2,6,6-tetramethylpiperidine-1-oxyl or TEMPO is an orange to red to reddish-brown colored liquid or solid and is used as a highly selective oxidation agent.



Orange to red or reddish-brown colored liquid or solid.

Physical Properties

Empirical Formula C9H18NO
Structural Formula
Molecular Wt.156.25 g/mol
Sp. Gr. at 25ºC0.898
Boiling Point193°C
Freezing Point35-38°C
Solubility in waterSlightly Soluble
Flash Point (closed cup)67°C


AppearanceOrange to red or reddish-brown colored liquid/solid
Purity by GC (wt. %)Min. 98%
Water by K.F. (wt. %)Max. 1%
  • IMDG Class8
  • HSN Code2933.39.90
  • CAS No.2564-83-2


  • applications

    TEMPO is used as a catalyst in organic synthesis and for the oxidation of primary alcohols to aldehydes.


  • Store in a cool place.
  • Incompatible with strong oxidizing agents and strong acids.

Health & Safety

  • Do not inhale substance/mixture.
  • Avoid generation of vapors / aerosols.
  • Keep away from open flames, hot surfaces and sources of ignition.
  • In case of contact, the affected area is to be washed with plenty of water for at least 15 minutes.
  • 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.


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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