Quick contact
Liquid
MSDS
PEROXAN DB
Dialkyl peroxide / Polymerization / Curing / Crosslinking
Di-tert-butyl peroxide
98%,
Liquid
PEROXAN DB is used for the (co)polymerization of ethylene, styrene, acrylates and methacrylates. PEROXAN DB is also used for the production of controlled rheology polypropylene (CR-PP).
TDS HP
PEROXAN DB is used for the curing of unsaturated polyester resins and polymerization of styrene alkyde mixtures.
TDS UP
PEROXAN DB is used for the crosslinking of polyolefins as well as natural rubber and synthetic rubber.
TDS CL
« back
PEROXAN DB
Molecular weight:
CAS No.:
146.2
110-05-4
Appearance:
Peroxide assay:
Active oxygen assay:
Density at 20°C:
clear liquid
min. 98%
min. 10.72%
0.8 g/cm³
in chlorobenzene:
in an EPDM compound:
Maximum storage temperature (Ts max):
Storage stability as from date of delivery:
40°C
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.
|
Flash point: SADT: |
<6°C 80°C |
|
|
The SADT (Self Accelerating Decomposition Temperature) is the lowest temperature at which a self accelerating decomposition may occur.
|
Schlavenhorst 71 D-46395 Bocholt Germany |
Phone: +49 (0)2871 / 99 02-0 Fax: +49 (0)2871 / 99 02-50 www.pergan.com |
HPUPCL/005/0321 Page 1 of 2 |
PEROXAN DB
Dialkyl peroxide / Polymerization / Curing / Crosslinking
Due to its high volatility, PEROXAN DB requires precautions in handling and metering.
Polymerization of ethylene:
PEROXAN DB is used for high pressure polymerization of ethylene in both autoclave and tubular processes, usually in combination with other peroxides of varying degrees of activity.
Temperature range: 240 to 280°C
Light-off temperature at 2300 bar: 265°C
Polymerization of styrene:
PEROXAN DB may be used in polymerization and copolymarization of styrene. In a mass process PEROXAN DB can be used to increase polymerization rates.
Temperature range: 95 to 185°C
Dosing: 0,02 to 0,1 phr
Polymerization of acrylates and methacrylates:
PEROXAN DB can be used as initiator for the solution, bulk and suspension (co)polymerization of acrylates and methacrylates.
Temperature range (solution polym.): 130 to 175°C
Dosing: 0,05 to 0,1 phr
Controlled rheology polypropylene (CR-PP) in an extrusion process:
PEROXAN DB allows great flexibility in controlling the melt flow index (MFI) of polypropylene. Small changes in either peroxide concentration or process temperature can produce significantly different MFIs. The MFI increases with the peroxide level.
Temperature range: 200 to 220°C
Dosing: 0,01 to 0,1 phr
PEROXAN DB is used for the curing of unsaturated polyester resins at elevated temperatures, in the temperature range from 120° to 160°C. Due to its high volatility, PEROXAN DB requires strict precautions in handling and metering.
Furthermore, PEROXAN DB is used in polymerization of alkyde styrene resins.
Depending on working conditions, the following peroxide dosage level is recommended:
PEROXAN DB: 1,0 to 1,5 phr
Due to ist high volatility, PEROXAN DB is mainly used for compounds that are crosslinked immediately after mixing.
PEROXAN DB is a thermally very stable peroxide. However, the high vapor pressure and the low flashpoint require special attention during handling and use. PEROXAN DB tends to build up static electricity; pumps must be ignition proof with grounded stainless steel tubing. Avoid any exposure to heat from naked fire, sunlight, steam pipes or any other source during storage.
Safe processing temperature (t2): 145°C
Typical crosslinking temperature (t90): 180°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.
Please refer to the material safety data sheet (MSDS) for information concerning safe storage, use and handling of PEROXAN DB. This information should be thoroughly reviewed prior to acceptance of this product. The MSDS is available for downloading at www.pergan.com or through contacting Pergan directly.
|
Schlavenhorst 71 D-46395 Bocholt Germany |
Phone: +49 (0)2871 / 99 02-0 Fax: +49 (0)2871 / 99 02-50 www.pergan.com |
HPUPCL/005/0321 Page 2 of 2 |
Material Safety Data Sheets
Here you can download safety data sheets according to Regulation (EC) no. 1907/2006.
Safety Data Sheets are an important source of information on chemicals, such as identity of the product,
occurring hazards, transport, safe handling and measures for prevention in case of danger