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Description and features
Iniper 44 (AIBI / 2,2’-Azobis(2-(2-imidazolin-2-yl) propane)dihydrochloride) is a white crystal powder which has C12H24C12N6 as chemical formula.
It is an watersoluble azo-initiator which is used in flocculants, super absorbent polymers and finishing agents for textile and wool.

Iniper 44 (AIBI) is also known as 1,2-Bis(2-(4,5-dihydro-1H-imidazol-2-yl)propan-2-yl)diazene dihydrochloride.

Product information

CAS number27776-21-2
EC number 248-655-3
HS code2927 00 00

Molecular and structural information

Molecular formulaC12H24Cl2N6
Molecular weight323.27 g/mol
Smiles notationCC(C)(C1=NCCN1)N=NC(C)(C)C2=NCCN2.Cl.Cl
Structural formula:


AppearanceWhite crystal powder
Assay≥98.00 %
Melting point188~193 °C
Volatility≤1.00 %

Physicochemical information

Boiling point413.3 °C at 760 mmHg
Melting point188~193 °C
Partition coefficient (log Pow)2.13
SADT140 °C
Solubility in waterSoluble

Iniper 44 (2,2’-Azobis(2-(2-imidazolin-2-yl) propane)dihydrochloride) can be used for the following applications:

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

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

Shipment Info
Iniper 44 (2,2’-Azobis(2-(2-imidazolin-2-yl) propane)dihydrochloride) is on stock in Europa. Our lead time is about one week if delivered in 20KG carton boxes.

Store 2,2’-Azobis(2-(2-imidazolin-2-yl) propane)dihydrochloride (AIBI) 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.

This substance (CAS: 27776-21-2) has been pre-registered under REACH (EC) 1907/2006.

A Material Safety Data Sheets (MSDS) is available for Iniper 44 (AIBI) and all other products supplied by Vesta Intracon 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.

2,2’-Azobis(2-(2-imidazolin-2-yl) propane)dihydrochloride | AIBI | (CAS: 27776-21-2). This information is supplied solely for informational purposes and Vesta Intracon 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.