PEROXAN BV-40 P is Butyl-4,4-di-(tert-butylperoxy) valerate 40%, Powder with chalk.PEROXAN BV-40 P is used for the crosslinking of natural rubber and synthetic rubber, as well as polyolefins.

Chemical Name: Butyl 4,4-bis(tert-butyldioxy)valerate

CAS Number: 995-33-5

Functions: Curing Agent

Chemical Family: Peroxides

Compatible Polymers & Resins: Ethylene Propylene Diene Monomer (EPDM), Ethylene Propylene Rubber (EPM), Ethylene Vinyl Acetate (EVA), Natural Rubbers (NR), Nitrile Butadiene Rubber (NBR), Styrene Butadiene Rubber (SBR)

Synonyms: 4,4-Bis(1,1-dimethylethylperoxy) valeric acid butyl ester, 4,4-Di(tert-butylperoxy)valeric acid butyl ester, Butyl 4,4-bis(tert-butylperoxy)pentanoate, Butyl 4,4-bis(tert-butylperoxy)valerate, Butyl 4,4-di-tert-butylperoxyvalerate, Butyl 4,4′-bis(tert-butylperoxy)valerate, n-Butyl 4,4-bis(t-butylperoxy)valerate, n-Butyl 4,4-bis(tert-butylperoxy)valerate, n-Butyl 4,4-di(tert-butylperoxy)valerate

  • TypeDocument Name
View All Documents

Knowde Enhanced TDS

Identification & Functionality

Chemical Family
Plastics & Elastomers Functions
CAS No.
995-33-5
EC No.
213-626-6

Features & Benefits

Materials Features

Applications & Uses

Plastics & Elastomers End Uses
Recommended Applications

PEROXAN BV-40 P is recommended for the crosslinking of NBR, SBR, EPM, EPDM and EVA. Rubber compounds containing PEROXAN BV-40 P have excellent scorch safety. Safe processing temperature (t2): 125°C Typical crosslinking temperature (t90): 160°C The safe processing temperature t2 is defined as the temperature, at which the scorch time is longer than 20 minutes. The typical crosslinking temperature t90 is defined as the temperature at which 90% of the crosslinks in the compound are formed within about 12 minutes.

Properties

Physical Form
Appearance
White Powder
Typical Properties
ValueUnitsTest Method / Conditions
Active oxygen assayappx. 3.83%
Bulk density at 20°C560kg/m³
Molecular Weight334.5
Peroxide assayappx. 40%

Technical Details & Test Data

Half Life Information
t ½ 10 h 1 h 1 min
bei0°C 0°C 0°C

 

Major Decomposition Products
  • Acetone
  • Carbon dioxide
  • Methane
  • N-Butyl levulinate
  • N-Butyl propionate
  • tert-Butanol

Safety & Health

Safety Characteristics
SADT 60°C

 

Packaging & Availability

Packaging Type
Packaging Information
  • 25kg cardboard box

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 BV-40 P.