What is AIBN in chemistry?

What is AIBN in chemistry?

Azobisisobutyronitrile (abbreviated AIBN) is an organic compound with the formula [(CH3)2C(CN)]2N2. This white powder is soluble in alcohols and common organic solvents but is insoluble in water. It is often used as a foamer in plastics and rubber and as a radical initiator.

How does AIBN work as an initiator?

When AIBN is used as an initiator, the compound decomposes partly because of the strong N-N triple bond that is formed, and partly because of the relatively stable radical that results. This radical is both tertiary and delocalized. Other initiators can also be used in radical polymerizations.

Why is AIBN explosive?

Case Details > Explosion of azobisisobutyronitrile (AIBN) caused due to overheat from excessive tightening of the gland packing of a drier. An Explosion occurred when drying 2, 2′-azobisisobutylnitrile (AIBN) (powder with 12% water). The explosion was induced by overheating of the agitator impeller shaft.

What type of initiator is AIBN?

AIBN is the most common oil-soluble azo polymerization initiator, and is used for polymerization of versatile polymers.

What is the structure of AIBN?

C8H12N4Azobisisobutyronitrile / Formula

Is AIBN soluble in ethanol?

water : very slightly soluble. acetone : freely soluble. methanol, toluene : soluble. ethanol : sparingly soluble.

What is the purpose of AIBN?

AIBN breaks down and forms a molecule of nitrogen gas and two carbon radicals. The nitrile functional groups serve a very important purpose in that they help to stabilize the carbon-centered radicals that were formed.

What is the role of AIBN?

It is often used as a foamer in plastics and rubber and as a radical initiator. In most characteristic reaction, AIBN decomposes, eliminating a molecule of nitrogen gas to form two 2-cyanoprop-2-yl radicals: These radicals can initiate free-radical polymerizations and other radical-induced reactions. 1.

How does AIBN decompose?

In fact, AIBN decomposes at 30 °C, very slowly. So, during storage and transportation of AIBN, the temperature should be controlled below 30 °C (viz. room temperature).

What is the density of AIBN?

1.1 g/cm³Azobisisobutyronitrile / Density

How do you store AIBN?

Store and handle Perkadox AIBN in a dry well-ventilated place away from sources of heat or ignition and direct sunlight. Never weigh out in the storage room. Avoid contact with reducing agents (e. g. amines), acids, alkalis and heavy metal compounds (e. g. accelerators, driers and metal soaps).