2,2'-Azobis
Powerful Radical Initiator: Often utilized as a catalyst in vinyl polymerization, it significantly boosts polymerization efficiency.
Wide Solubility Range: Dissolves in alcohols and various organic solvents, offering versatility across different industrial uses.
Effective Foaming Agent: Frequently used in plastics and rubber manufacturing to enhance material characteristics.
High Combustibility: Easily ignited by sparks or flames, ideal for applications requiring controlled combustion or radical generation.
Product Details
Azobisisobutyronitrile (AIBN), represented by the chemical formula [(CH3)2C(CN)]2N2, is a white crystalline substance. It is soluble in alcohols and various organic solvents but remains insoluble in water. AIBN is commonly employed as a foaming agent in plastics and rubber, as well as a radical initiator in polymerization processes. It is denser than water and dissolves readily in alcohol-based solvents. This compound is moderately toxic when ingested and is highly flammable, easily ignited by sparks or flames, with intense and persistent burning. Combustion of AIBN results in the formation of toxic nitrogen oxides. It is also used as a catalyst in vinyl polymerizations and as a blowing agent in plastic manufacturing.
Parameters
Melting point | 102-104 °C (dec.)(lit.) |
Boiling point | 281.68°C (rough estimate) |
density | 1.11 |
vapor pressure | 0.81Pa at 24.85℃ |
refractive index | n20/D1.495 |
Fp | 4℃ |
storage temp. | 2-8°C |
solubility | Chloroform (Slightly), Methanol (Slightly) |
form | Solid |
color | Crystals from EtOH |
Odor | odorless |
Water Solubility | Insoluble |
Merck | 13,920 |
BRN | 1708400 |
Stability: | Stability Flammable solid. Shock sensitive. Thermally unstable. May be explosive in combination with acetone or heptane. Incompatible with oxidizing agents. |
InChIKey | OZAIFHULBGXAKX-VAWYXSNFSA-N |
LogP | 1.1 at 25℃ |
CAS DataBase Reference | 78-67-1(CAS DataBase Reference) |
NIST Chemistry Reference | 2,2'-Azo-bis-isobutyronitrile(78-67-1) |
EPA Substance Registry System | Azobis(isobutyronitrile) (78-67-1) |
Safety Information
Hazard Codes | E,Xn,F,Xi |
Risk Statements | 2-11-20/22-52/53-67-65-48/20-38-63-66-36 |
Safety Statements | 39-41-47-61-62-36/37-16-26 |
RIDADR | UN 3234 4.1 |
WGK Germany | 2 |
RTECS | UG0800000 |
F | 4.4 |
HazardClass | 4.1 |
PackingGroup | II |
HS Code | 29269090 |
Hazardous Substances Data | 78-67-1(Hazardous Substances Data) |
Toxicity | LDLo orl-rat: 670 mg/kg 34ZIAG 0,117,69 |
2,2'-Azobis(2-methylpropionitrile), also known as AIBN, is commonly used as an initiator in radical polymerization processes. Its molecular structure allows for easy cleavage, leading to the generation of high-energy activation molecules. AIBN is the most widely employed azo initiator due to its stable decomposition process, which produces only a single type of free radical and minimizes unwanted side reactions. Consequently, it is frequently utilized in the kinetic analysis of free radical polymerization.
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