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Description and features

Iniper 50 (2,2′-Azobis(2-methylpropionamidine)dihydrochloride) is a white granule which has C8H20Cl2N6 as chemical formula.
It is an watersoluble azo-initiator which is used in the production of coagulants and superabsorbent polymers.

Iniper 50 (AIBA) is also known as 2,2′-(Diazene-1,2-diyl)bis(2-methylpropanimidamide) dihydrochloride, 2,2′-Azobis(2-amidinopropane) dihydrochloride and alpha,alpha’-Azodiisobutyramidine dihydrochloride.


Europe: Iniper 50 (2,2′-Azobis(2-methylpropionamidine)dihydrochloride) is limited ➔ on stock. Our lead time is about one week if delivered in 20 KG carton boxes.

Canada, South America, South Africa and other markets can also be served, please contact our sales department for more details.

Product Identification

CAS number2997-92-4
EC number 221-70-0
HS code2927 00 00


AppearanceWhite granules
Assay≥98.0 %
Color APHA≤100
Volatility≤ 1.0 %


Iniper 50 (2,2′-Azobis(2-methylpropionamidine)dihydrochloride) can be used for the following applications:

  • Polymerization of acrylamide
  • Polymerization of acrylonitrile
  • Polymerization of acrylic acid


Available packaging: 20 KG carton boxes.
Special packaging is available on request.


Store 2,2′-Azobis(2-methylpropionamidine)dihydrochloride (AIBA) in a cool, dry and well-ventilated area and in line with legal requirements.
Keep away from heat sources, ignition sources. Store below 40 °C.


A Material Safety Data Sheets (MSDS) is available for Iniper 50 (AIBA) and all other products supplied by Vesta Chemicals BV.

An MSDS describes the hazards of a product and explains how a product can be safely handled, used and stored. Besides it provides important regulatory and emergency response information for the purchased product.


This substance (CAS: 2797-92-4) has been registered under REACH (EC) 1907/2006.

Molecular and structural information

Molecular formula C8H20Cl2N6
Molecular weight 271.19 g/mol
Smiles notation CC(C)(C(=N)N)N=NC(C)(C)C(=N)N.Cl.Cl
Structural formula

Physicochemical information

Boiling point Decomposes before boiling
Relative density 1.214 g/ml @ 20 °C
SADT110 °C
Melting point No melting point is derived
Partition coefficient (log Pow) 0.3 @ 25 °C
Solubility in water 176 g/L @ 20 °C
Vapor pressure 0 Pa @ 20 °C
2,2′-Azobis(2-methylpropionamidine)dihydrochloride | AIBA | CAS: 2997-92-4 | Disclaimer. This information is supplied solely for informational purposes and Vesta Chemicals bv makes no guarantees or warranties, either expressed or implied, with respect to the accuracy and use of this data. All product warranties and guarantees shall be governed by the Standard Terms of Sale. Nothing in this document is legal advice or is a substitute for competent legal advice.