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PEROXAN PK234 V is 2,2-Di-(tert-butylperoxy)-butane 50%, Solution in odorless white spirits.PEROXAN PK234 V-is used for the (co)polymerization of ethylene, styrene, acrylonitrile, acrylates and methacrylates.

Chemical Name: 2,3-Dimethyl-2,3-diphenylbutane

CAS Number: 1889-67-4

Functions: Curing Agent, Initiator

Chemical Family: Peroxides

Compatible Polymers & Resins: Acrylics, Polyethylenes (PE), Polystyrenes (PS)

Synonyms: 1,1'-(1,1,2,2-Tetramethyl-1,2-ethanediyl)bisbenzene, 1,1'-(1,1,2,2-Tetramethylethylene)dibenzene

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Identification & Functionality

Chemical Family
Plastics & Elastomers Functions
CAS No.
1889-67-4
EC No.
217-568-2

Features & Benefits

Labeling Claims

Applications & Uses

Plastics & Elastomers End Uses
Recommended Applications

Polymerization of ethylene : PEROXAN PK234 V is used for high pressure in both autoclave and tubular processes, usually in combination with other peroxides of varying degrees of activity. Temperature range: 190 to 250°C Light-off temperature at 2300 bar: 219°C

Polymerization of styrene: PEROXAN PK234 V may be used in polymerization and copolymarization of styrene. In a mass process PEROXAN PK234 V can be used to increase polymerization rates. In suspension polymerization processes, PEROXAN PK234 V is often used for reduction of residual styrene content during the final polymerization stage. Temperature range: 90 to 130°C Dosing: 0,02 to 0,1 phr

Polymerization of acrylates and methacrylates: PEROXAN PK234 V can be used as initiator for the solution, bulk and suspension (co)polymerization of acrylates and methacrylates. Temperature range: 100 to 140°C Dosing: 0,1 to 1 phr

Other applications: PEROXAN PK234 V may also be used for the (co)polymerization of acrylonitrile and divinylbenzene.

Properties

Physical Form
Appearance
Clear Liquid
Typical Properties
ValueUnitsTest Method / Conditions
Active oxygen assayappx. 6.83%
Density at 20°C0.81g/cm³
Molecular Weight234.2
Peroxide assayappx. 50%

Technical Details & Test Data

Half Life Information
t ½ 10 h 1 h 1 min
bei98°C 116°C 153°C

 

Major Decomposition Products
  • 2-Methoxy-2-methylpropane
  • Acetone
  • Ethane
  • Carbon dioxide
  • Methane
  • tert-Butanol

Safety & Health

Safety Characteristics
SADT 70°C

 

Packaging & Availability

Packaging Information
  • 20kg container

Storage & Handling

Shelf Life
6 Months
Product Handling and Storage
  • Maximum storage temperature (Ts max) : 30°C
  • Storage stability as from date of delivery : 6 months
  • Organic Peroxides are more or less stable products but will decompose under the influence of heat. To minimize a loss of quality during storage, it is important that the recommended maximum storage temperature is not exceeded. If a minimum storage temperature is given, an undesirable process such as a solidification or phase separation, is known to occur below this temperature.
  • Please refer to the material safety data sheet (MSDS) for information concerning safe storage, use and handling of PEROXAN PK234 V.