TMQ antioxidant

Chemical Name: Polymerized 2,2,4 – trimethyl – 1,2 – dihydroquinoline

Synonyms: 1,2-Dihydro-2,2,4-trimethylquinoline oligomers, Acetonanil, Acetonanyl, Acetone Anil, DHMQ, Hydro-2,2,4-trimethylquinoline oligomers, Poly(1,2-dihydro-2,2,4-trimethylquinoline), Polymerized 1,2-Dihydro-2,2,4-trimethylquinoline, TDQ, TMDQ, TMQ, Trimethyldihydroquinoline polymer.

CAS No.: 26780-96-1

H.S. Code: 3812 30 2000

Main applications:

  • Slightly staining non-blooming antioxidant in the production of rubber compounds for tyres, tyres retreads and heavily stressed technical rubber goods (tubes, buffers, insulating electric wires & cables, conveyor and transmission belts, steam hoses, break linings, oil seals, profiles, boots and footwear soles and heels) based on NR, IR, SBR, NBR and polybutadiene. 0.5 - 3.0 phr loadings enhance their flex life and provide long-time thermal-oxidative protection.
  • Excellent antiozonant for CR, partially replaces para-phenylenediamine (PPDA) antiozonants.
  • Inhibitor of oxidation catalyzed by copper and manganese.

Other applications:

  • Peroxide cure (0.25 - 1.0 phr) of EPR/EPDM and NBR compounds.
  • Antioxidant protection of latexes.

TMQ antioxidant
TMQ antioxidant production
TMQ antioxidant production
Acetononil on the production line
Acetononil on the production line

Quality Data:

Parameters Garanteed value Test method
Appearance Brownish granules, free from agglomerates Visual
Assay, %, MIN. 90 Potentiometric titration of the basic nitrogen, TM743
Softening point, °С: 83 - 95 Ring & Ball, ASTM E28-67
Isopropyl bis-aniline content %, MAX 0,5 HPLC, QA5026-01
Volatiles content, %, MAX 0,4 2hrs @ 105 °С, ISO787-281
Ash content, %, MAX 0,25 2hrs @ 750 °С, ASTM D4574

Guaranteed storage life: 12 months from the date of manufacturing

Packing: 25 kg multi-wall paper bags stacked on pallets (900 kgs net/pallet) and wrapped in a shrink film.

Transportation information:

  • UN number: 3077
  • UN Class: 9
  • UN Packing Group: III
  • Environmental Hazards: Self-classification (in accordance with GHS/CLP classification criteria): 
    • Hazards to the aquatic environment: Chronic Category 2
    • H411: Toxic to aquatic life with long lasting effects.
  • Special precautions for user: A number of restrictions may apply to materials subject to local/ national/regional classifications requirements. Please refer to the appropriate regulation for specific details regarding classification requirements and restrictions.


  • N Symbol
  • R/S phrases: R52/53, S61.

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