PEROXAN HX-45 P is 2,5-Dimethyl-2,5-di-(tert-butylperoxy)-hexane 45%, Powder with chalk.PEROXAN HX-45 P is used for the curing of unsaturated polyester resins.PEROXAN HX-45 P is used for the crosslinking of natural rubber and synthetic rubber, as well as polyolefins.

Chemical Name: 2,5-Dimethyl-2,5-di(tert-butylperoxy)hexane

CAS Number: 78-63-7

Functions: Curing Agent

Chemical Family: Peroxides

Compatible Polymers & Resins: Ethylene Propylene Diene Monomer (EPDM), Ethylene Vinyl Acetate (EVA), Low-Density Polyethylene (LDPE), Natural Rubbers (NR), Nitrile Butadiene Rubber (NBR), Styrene Butadiene Rubber (SBR), Unsaturated Polyester (UPE)

Processing Methods: Compression Molding

Synonyms: (1,1,4,4-Tetramethyltetramethylene)bis(tert-butyl peroxide), 1,1′-(1,1,4,4-Tetramethyl-1,4-butanediyl)bis[2-(1,1-dimethylethyl) peroxide], 2,5-Bis(tert-butyldioxy)-2,5-dimethylhexane, 2,5-Bis(tert-butylperoxy)-2,5-dimethylhexane, 2,5-Di-tert-butyl-2,5-dimethylhexyl peroxide, 2,5-Di(t-butylperoxy)-2,5-dimethylhexane, 2,5-Di(tert-butylperoxy)-2,5-dimethylhexane, 2,5-Dimethyl-2,5-bis(1,1-dimethylethylperoxy)hexane, 2,5-Dimethyl-2,5-bis(tert-butyldioxy)hexane, 2,5-Dimethyl-2,5-bis(tert-butylperoxide)hexane, 2,5-Dimethyl-2,5-bis(tert-butylperoxy)hexane, 2,5-Dimethyl-2,5-di(t-butylperoxy)hexane, 2,5-Dimethyl-di(tert-butyl)peroxyhexane, 2,5-Dimethylhexane-2,5-di-tert-butylperoxide, 2,5-Methyl-2,5-di(tert-butylperoxy)hexane

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Identification & Functionality

Chemical Family
Plastics & Elastomers Functions
CAS No.
78-63-7
EC No.
201-128-1

Features & Benefits

Materials Features

Applications & Uses

Plastics & Elastomers Processing Methods
Recommended Applications

PEROXAN HX-45 P is used for the curing of unsaturated polyester resins at elevated temperatures. PEROXAN HX-45 P is preferred for the curing of UP resin based hot press molding formulations in the temperature range from 140° to 180°C. The stability of this Dialkyl peroxide in an UP resin is hardly influenced by the presence of metal accelerators, pigments or fillers. Depending on working conditions, the following peroxide dosage level is recommended: PEROXAN HX-45 P: 2,0 to 4,0 phr

Properties

Physical Form
Appearance
White Powder
Typical Properties
ValueUnitsTest Method / Conditions
Active oxygen assayappx. 4.96%
Bulk density at 20°C300kg/m³
Molecular Weight290.4
Peroxide assayappx. 45%

Regulatory & Compliance

Certifications & Compliance

Technical Details & Test Data

Half Life Information
t ½ 10 h 1 h 1 min
bei118°C 147°C 171°C

 

Major Decomposition Products
  • Ethane
  • Methane
  • tert Amyl-alcohol
  • tert-Butanol

Safety & Health

Safety Characteristics
Flash point 91°C
SADT 80°C

 

Packaging & Availability

Packaging Type
Packaging Information
  • 20kg cardboard box

Storage & Handling

Shelf Life
6 Months
Product Handling and Storage
  • Maximum storage temperature (Ts max) : 40°C
  • Minimum storage temperature (Ts min) : 10°C
  • Storage stability as from date of delivery : 6 months
  • Keep packaging tightly closed in a well ventilated place at indicated storage temperature. Keep away from reducing agents e.g. amines, acids, alkalis, heavy metal compounds (e.g. accelerators, driers, metal soaps). Never weigh out in storage room. Oxidizing agent. Decomposes violently under the influence of heat or by contact with reducing agent. Never mix with accelerators. 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 HX-45 P.