Peroxide CH335

CH335

Product description

　 1,1-Di(tert-butylperoxy)-3,3,5-trimethylcyclohexane
　 90% solution in dibutyl phthalate

　 Molecular weight : 302.5
　 Theoretical active Oxygen content : 10.58%
　 CAS No. : 6731-36-8

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

Specification

　 Appearance :           Clear liquid
　 Assay :                   90.0±1.0%
　 Color :                     50 Pt-Co max.
　 Hydroperoxides (as TBHP) : 1.0% max.

Physical properties

　 Density, 20℃ : 920 kg/m³
　 Viscosity, 20℃: 36 mPa.s

Half life data

The reactivity of an organic peroxide is usually given by its half life (t1/2) at various temperatures. For CH335-B90 in chlorobenzene:

　 t = 0.1 hr 　　　　　　 1 hr 　　　　　 10 hr
　 at 128℃ 　　　　　　 105℃ 　　　　　 85℃

Storage

　 For CH335-B90 Ts max.= 25℃
　 Ts min. = -10℃ to prevent phase separation

Major decomposition products

Carbon dioxide, Methane, 3,3,5-Trimethylcyclohexanone, tert-Butanol,Acetone

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.
CH335-B90 is classified as Organic peroxide type C; liquid, Division 5.2; UN 3103; PG II. Air (ICAO-TI/IATA-DGR) transport is forbidden.

Safety and handling

Keep away from open fire, sparks and other sources of heat or ignition.

Avoid contact with reducing agents (e.g. amines), acids, alkalis and heavy metal compounds (e.g. accelerators, driers and metal soaps). Please refer to the Materials Safety Data Sheet (MSDS) for further information on the safe storage, use and handling of CH335-B90. This information should be thoroughly reviewed prior to acceptance of this product.

Application

1. Polymerization of styrene

CH335 can be utilized to increase polymerization rates at temperatures between 90℃ and 120℃.

2. Other applications

CH335-B90 can also be used for the (co)polymerization of styrene, acrylonitrile, acrylates and methacrylates in the temperature range between 90℃ and 120℃.

3. Rubber crosslinking

Rubber compounds containing CH335 have excellent scorch safety.

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