MEKP CAS 1338-23-4 with good price catalyst vinyl ester resin hardener
Butanox M-50 is a general purpose methyl ethyl ketone peroxide (MEKP)for the curing of unsaturated polyester resins in the presence of a cobalt accelerator at room and elevated temperatures.
The curing system Butanox M-50/cobalt accelerator is particularly suitable for the curing of gelcoat resins, laminating resins, lacquers and castings; moreover the manufacture of light resistant parts may be possible contrary to the curing system benzoyl peroxide/amine accelerator.
Practical experience throughout many years has proven that by the guaranteed low water content and the absence of polar compounds in Butanox M-50, this peroxide is very suitable in GRP products for e.g.marine applications.
For room temperature application it is necessary to use Butanox M-50 together with a cobalt accelerator (e.g. Accelerator NL-49P).
Product description
Methyl ethyl ketone peroxide, solution in dimethyl phthalate
CH3
CH3
CH3
HOO
C
O
O
C
OOH ; HOO
C
OOH ; HOOH
C2H5
C2H5
C2H5
CAS No.
: 1338-23-4
EINECS/ELINCS No.
: 215-661-2
TSCA status
: listed on inventory
Specifications
Appearance
: Clear and colorless liquid
Total active oxygen
: 8.8-9.0%
Characteristics
Density, 20°C
: 1.180 g/cm3
Viscosity, 20°C
: 24 mPa.s
Water content
: max. 3.0%
Storage
Due to the relatively unstable nature of organic peroxides a loss of quality
can be detected over a period of time. To minimize the loss of quality,
AkzoNobel recommends a maximum storage temperature (Ts max.) for
each organic peroxide product.
For Butanox M-50
Ts max. = 25°C
When stored under the recommended storage conditions, Butanox M-50
will remain within the AkzoNobel specifications for a period of at least 3
months after delivery.
Thermal stability
Organic peroxides are thermally unstable substances, which may undergo
self-accelerating decomposition. The lowest temperature at which self-
accelerating decomposition of a substance in the original packaging may
occur is the Self-Accelerating Decomposition Temperature (SADT). The
SADT is determined on the basis of the Heat Accumulation Storage Test.
