Peroxide DBHP

DBHP

Product description

　 Isopropylcumyl hydroperoxide
　 55% solution in diisopropybenzene

　 Molecular weight : 194.3
　 Theoretical active Oxygen content : 8.24%
　 CAS No. : 26762-93-6

Specification

　 Appearance :                    Clear colorless liquid
　 Assay :                            54.0-56.0%
　 Color :                              1G max.

Physical properties

　 Density, 25℃ : 935kg/m³
　 Viscosity, 20℃ : 6.6 mPa.s

Half life data

The reactivity of an organic peroxide is usually given by its half life (t1/2) at various temperatures.

For DBHP in chlorobenzene:
　 t 　　　　 0.1 hr 　　　　 1 hr 　　　　 10 hr
　 at 　　　 183℃ 　　　 154℃ 　　　 129℃

Major decomposition products

Methane, 3-Isopropylacetophenone, 3-(2-Hydroxyisopropyl)isopropylbenzene

Storage

　 For DBHP Ts max.= 30℃ and
　 Ts min. = -25℃

Packaging and transport

The standard packaging is a 25-liter HDPE can for 25 kg peroxide solution or a 220-liter HDPE drum for 200 kg peroxide solution.
DBHP is classified as Organic peroxide type F, liquid; Division 5.2; UN 3109; PG II.

Application

DBHP may be used in mass ,emulsion and solvent (co)polymerizations of styrene, butadiene, acrylonitile, acrylates and methacrylates. In emulsion processes, DBHP my be activated by water-soluble as well as oil-soluble reducing agents or by metal compounds to achieve 　　
reproducible polymerization at room temperature or lower.

DBHP is particularly suited for the cold emulsion polymerization of rubber latexes.

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