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Applications in Industry

The most common industrial applications of 2,2'-Azobis(amidinopropane) Dihydrochloride are:

Final Application

Chemical Reactants



Polyvinyl Alcohol


Consumer products/ Personal Care

Polyacrylic Acid and Copolymers

SAP (Superabsorbant Polymers) for Diapers,
Feminine Hygiene Pads,
Incontinence Pads, etc.

Consumer products/ Personal Care

Polyvinyl Methyl Ether/
Maleic Anhydride Copolymers

Hair Fixatives


Polyacrylic Acid and Copolymers

Cobuilding agents (for Zeolithes)






Controlled Release Tablets,
Transdermal Additives

Pulp and Paper

Polyquaternary Ammonium Compounds

Filler Retention Aids, Flocculants,
Coagulants, Binders,
Coatings, Paper Sizes,
Drainage Aids,
Dry Strength Additives,
Rheology modifyers,
Printing Aids


Polyacrylic acid and derivatives

Rheology modifyers,
Polyacrylic acid and derivatives
Priniting Aids


Fluorinated monomers



Polyvinyl Alcohol

Warp Sizes

Water Treatment

Polyquaternary Ammonium Compounds


Advantages of 2,2'-Azobis(amidinopropane) Dihydrochloride

Among the major advanctages of Azo Initiator 2,2'-Azobis(amidinopropane) Dihydrochloride compared to other technologies are:

  • Higher stability (than peroxide initiators), affecting positively transport and storage of initiator;
  • Decomposition/production of radical source under first-order kinetics,
  • Not sensitive to metal salts, acids and bases;
  • Not sensitive to radical induced decomposition;
  • No production of additional radicals whith different and destructive properties such as Oxygen;
  • No deterioration of final product by Oxygen liberated (as when peroxide initiators are used);
  • Absence of autocatalytic decomposition as in the case of peroxide initiators which is very difficult to control;

In consequence, the benefits for the industrial application when using 2,2'-Azobis(amidinopropane) Dihydrochloride are:

  • Easy control of polymerization reaction;
  • Higher efficiency and predictability of reaction, compared to other sources of free radials (e. g. Peroxides);
  • Better control of and much higher definition of distribution of polymer chain length, creating a much higher uniqueness of end product;
  • No deterioration of final product because no Oxygen is liberated during reaction.

Advanced forms of supply

A possible disadvantage during use is based on the HCl salt form, namely the irritant (Xi) property of 2,2'-Azobis(amidinopropane) Dihydrochloride. In combination with the crystalline standard form of the product which may cause formation of dust, workforce protective measures have to be taken into account by the user.

Chemiehandel Dr. Wolfgang Doerner has developped advanced forms of supply to overcome negative effects of dustiness of material at the point of use, and already is supplying this as well as other water soluble Azo Initiators in different supply systems:

  • packed in standard PE bags,
  • packed in big packs (20 kg and 25 kg),
  • packed in water soluble bags (5 kg).

The benefits especially for the latter two supply systems are substantial reduction of dust during filling operations. An alternative granular form of product is planned for the future as well.

© 2000, 2002 by Dr. W. M. Doerner