AIBN
CAS : 78-67-1
Plastics manufacturing
Photocurable
AIBN is the most common oil-soluble azo polymerization initiator, and is used for polymerization of versatile polymers.
V-601 is a nitrile-free oil-soluble azo polymerization initiator which was developed as alternative to AIBN.V-601 has similar polymerization activity to AIBN, and the by-products of decomposition have less toxicity.
| Product name | AIBN | V-601 |
|---|---|---|
| Structural formula |  |
 |
| Chemical name | 2,2'-Azobis(isobutyronitrile) | Dimethyl 2,2'-azobis(2-methylpropionate) |
| CAS RN® | 78-67-1 | 2589-57-3 |
| Molecular weight | 164.21 | 230.26 |
| Molecular formula | C8H12N4 | C10H18N2O4 |
Physical characteristics
| AIBN | V-601 | |
| Color | white | slightly yellow or light yellow |
| Appearance | crystalline powder | crystals or oily liquid |
| Melting point/freezing point | 100-103(dec.) °C | 22-28°C |
| 10hour half-life decomposition temperature | 65°C(in toluene) | 66°C(in toluene) |
| Activation energy | 132.4 kJ/mol | 131.2 kJ/mol |
| Frequency factor(ln A) | 36.30 | 35.67 |
| SADT | 50°C | 35°C |
*SADT: Self-accelerating decomposition temperature
Solubility
| AIBN | V-601 | ||
|
Solubility (wt%, r.t.) |
Toluene | 7.0 | >50 |
| Methanol | 7.5 | >50 | |
| Ethyl acetate | 14.0 | >50 | |
| n-Hexane | n.a. | >50 | |
| Ethanol | 2.7 | >50 | |
| DMF | 20.5 | >50 | |
| DMSO | 6.5 | >50 | |
| Water | 0.1 | 0.3 | |
| Acetone | 29 | >50 | |
| Chloroform | 25 | >50 | |
Toxicity
| AIBN | V-601 | ||
|
Acute oral toxicity LD50(mg/kg) |
Product | 100(Rat) | ＞527(Rat) |
| Decomposition Product | 25(Rat) | 2369(Rat) | |
Packaging & Storage conditions
| AIBN | V-601 | |
| Packaging | 20kg | 10kg / 500g |
| Storage conditions | keep under 20°C | keep under 10°C |
Related laws and regulations
| AIBN | V-601 | |
| TSCA | Listed | Listed under 5e Consent Order |
| EINECS | Listed | Listed |
| REACH | 01-2119488882-21-xxxx | 01-2120807902-57-0000 |
The "Azo Polymerization Initiator Decomposition Simulator" allows you to easily visualize the decomposition of azo polymerization initiators in a graph. You can use all 15 types of azo initiators, helping you select the best initiator for your polymerization conditions and optimize your polymerization process.
