Procurement managers are constantly seeking reliable sources for critical raw materials. Isobutylene, also known as 2-Methylpropene (CAS 115-11-7), stands out as a key C4 hydrocarbon with broad industrial applications. Its unique chemical structure makes it an indispensable component in polymer manufacturing, fuel production, and the synthesis of fine chemicals and agrochemicals.

The physical state of Isobutylene is a colorless, highly flammable gas at standard conditions. Its industrial value stems from its reactivity as an alkene, readily undergoing polymerization and alkylation reactions. This chemical versatility allows it to be a precursor for a wide array of high-value products.

One of the most significant applications for Isobutylene is in the production of butyl rubber and polyisobutylene. Butyl rubber, a copolymer of isobutylene and a small amount of isoprene, is prized for its low gas permeability, making it ideal for tire inner liners, medical stoppers, and protective clothing. Polyisobutylene, a homopolymer, finds use in lubricants, adhesives, and sealants. When procuring Isobutylene for these applications, ensuring high purity (often 99% or greater) is crucial to achieving the desired polymer properties and molecular weights.

In the automotive and energy sectors, Isobutylene is a vital component in the production of fuel additives. Its reaction with methanol produces MTBE, which was historically used as an octane booster in gasoline. While MTBE usage has seen changes in some regions, Isobutylene remains essential for producing other fuel components and high-octane blending stocks.

For the agrochemical industry, Isobutylene serves as a critical intermediate in the synthesis of active ingredients for pesticides. Its strategic use in these formulations contributes to effective crop protection solutions. Purchasing managers must ensure that their Isobutylene supplier can provide consistent quality and meet specific purity requirements for these sensitive applications.

When selecting a manufacturer or supplier for Isobutylene, procurement professionals should prioritize factors such as purity levels, production capacity, reliability of supply, and competitive pricing. Engaging with established Chinese chemical manufacturers can often provide access to high-quality Isobutylene at attractive price points. It is advisable to request Certificates of Analysis (CoA) for each batch to confirm specifications and to inquire about bulk purchase discounts and sample availability to validate performance in your specific application.