Azo-Isobutyronitrile has found a core place in the chemical world, often abbreviated as AIBN. The white crystalline substance, CAS No. 78-67-1, brings consistent results as a free-radical initiator, especially for polymerization processes. I recall my first exposure to AIBN from a local paints supplier in 2012, who emphasized its purity as key to polymer stability. Here’s what buyers and sourcing managers need to grasp: structural formula C8H12N4. Its specific density sits around 1.1 g/cm3, and its melting range hovers between 100–105 °C. Its molecular property drives the performance of PVC, acrylonitrile, and synthetic rubber products.
China now produces a large part of the world’s AIBN. I have met several factory representatives from Qingdao and Shanghai, each competing to offer direct-manufacturer pricing and a full suite of support docs — SDS, TDS, REACH, and ISO certifications. Most want to impress buyers with both product quality and volume capability, often mentioning MOQ as low as 25kg. They offer quotes in both CIF and FOB terms, meeting needs for flexible shipment. In my own negotiations, Chinese suppliers handled requests for kosher, halal, and OEM certificates. Many bring SGS and other third-party validations, supporting E-E-A-T principles of experience and trust.
The structure of Azo-Isobutyronitrile — two isobutyronitrile groups joined by an azo (N=N) bridge — gives it the ability to decompose at moderate temperatures, releasing nitrogen gas. This sets it apart as a raw material for initiator blends. Out on the market, a common product spec sheet covers purity from 98% and above, low oil or water content, and particle size fine enough for even mixing. My own takeaway from handling AIBN: treat it with deep respect. It counts as a hazardous material under most policy rules, flagged by its toxic and flammable properties. Wearing gloves, goggles, and storing it in cool, ventilated places is just the start.
MSDS and hazard-data sheets must always be reviewed before any purchase. I have seen poorly stored AIBN develop sensitivity or clump, raising major safety issues. The safe storage requirement is strictly enforced in China, with leading factories offering liter-solution material for easier and safer handling.
Sourcing from China often brings a choice: direct factory supply or a third-party chemical-buy supplier. AIBN’s HS code (2927.00) helps customs clearance. Getting a sample before bulk purchase saves headaches, and many Chinese suppliers ship free or paid test samples, even for buyers outside Asia.
Pricing depends on purity, packaging, and July–August fluctuations. A recent inquiry for 500kg found FOB Qingdao prices competitive, with full safety and halal/kosher-certified documentation included. One exporter even offered custom branding for European customers. I’ve learned that solid relationships with certified suppliers often yield better payment terms and technical support on application — something no spreadsheet can replace.
Chinese government policy now leans heavily toward strict export controls for hazardous raw materials. Annual REACH registration deadlines must be watched. Buyers should review both technical (TDS) and safety (SDS) files every time. ISO and SGS-backed certification brings another trust layer, alongside one-stop support for specific-density, product-formula, and structural data requests. Companies linking these efforts to actual applications — not just selling any generic AIBN — earn repeat business and long-term trust.
