Di-tert-butyl peroxide is an initiator and an important initiator in polymer synthesis, with wide applications in organic synthesis. Widely used as an initiator for synthetic resins, photosensitizer for photopolymerization, vulcanizing agent for rubber, diesel additive, and also as a crosslinking agent for unsaturated polyester and silicone rubber.
The synthesis methods of di-tert-butyl peroxide include alkali catalyzed synthesis, acid catalyzed synthesis, metal catalyzed synthesis, and self oxidation synthesis. Di-tert-butyl peroxide is a Organic peroxides. Organic peroxides contains peroxide bond, which may lead to decomposition risk. It can decompose at lower temperatures, release a large amount of heat, and form a self accelerating reaction. Thermal runaway or even thermal explosion occurs.
Taking relative activity (DTBP) as the research object, the composition of pyrolysis products was investigated, and a linear relationship was found between the peak area of the main pyrolysis product acetone and the amount of di-tert-butyl peroxide. By using this relationship, the hydrogen peroxide content can be determined at the same evaporation temperature. We chose different inlet temperatures to study the relationship between residue and temperature. Research has found that as the inlet temperature increases, the degree of decomposition increases, and the decomposition is complete at 300 ℃. The precision of the thermal decomposition method is slightly lower than that of the internal standard method, but its application range is wider than that of the internal standard method, especially suitable for the analysis of peroxides that are easy to decompose and difficult to vaporize. Although the types of chromatographic columns used for qualitative and quantitative analysis are different, the thermal decomposition products are completely the same.
The traditional synthesis method is divided into two steps: first, 27.5% hydrogen peroxide and 85% Tert-Butyl alcohol are oxidized with 70% sulfuric acid to obtain tert butyl hydroperoxide; In these two steps, Tert-Butyl alcohol and tert butyl hydroperoxide react with sulfuric acid to obtain di tert butyl hydroperoxide. The operating temperature for this process must be an ice bath. Butanol is slowly added to the reaction system. During the infusion process, strong stirring is required. During the dripping process, the system temperature should not exceed 5 ℃. Due to the release of a large amount of heat from the reaction, the stirring speed is too slow, resulting in local overheating; If the temperature rises too fast.https://www.kz-opchem.com/organic-peroxides/dtbp-cas-110-05-4-di-tert-butyl-peroxide.html