Peroxide CH

CH-B50

Product description

　 1,1-Di(tert-butylperoxy)cyclohexane

　 Molecular weight : 260.4
　Theoretical active Oxygen content : 12.29%
　CAS No. : 3006-86-8

Initiator for the (co)polymerization of ethylene, styrene, acrylonitrile, acrylates and methacrylates.

Specification

　 Appearance :                    Clear liquid
　 Assay :                             50.0±1.0%
　 Color :                              50 Pt-Co max.
　Hydroperoxides as TBHP :   0.5% max.

Physical properties

　Density, 20℃ : 985 kg/m³

Half life data

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

For CH-B50 in chlorobenzene:
　 t = 0.1 hr 　　　 1 hr 　　　 10 hr
　 at 134℃ 　　　 113℃ 　　　94℃

Storage

Due to the relatively unstable nature of organic peroxides, a loss of quality will occur over a period of time.

　For CH-B50 Ts max. = 25℃

Major decomposition products

Carbon dioxide, Methane, tert-Butanol, Acetone, Hexanoic acid

Packaging and transport

The standard packaging is a 30-liter HDPE can for 25 kg peroxide solution. Both packaging and transport meet the international regulations. Smaller packaging size is available on request.

CH-B50 is classified as Organic peroxide type D, liquid; Division 5.2; UN 3105; PG II.

Application

1. Polymerization of styrene

CH-B50 can be used for the bulk polymerization of styrene in the temperature range between 90 and 120℃.

2. Other applications

CH-B50 can also be used for the (co)polymerization of styrene, acrylonitrile, acrylates and methacrylates .

3. Peroxides for Thermoset Resins

CH-B50 is a 50% formulation of the perketale 1,1-Di(tert-butyl peroxy)cyclohexane in dibutylphthalate which is used for the curing of unsaturated polyester resins at elevated temperatures.

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