CAS No.
29240-17-3
TSCA Status
listedon inventory
EINECS/ELINCS No.
64741-65-7
Molecular weight
188.3
Active oxygen content peroxide
8.5%
Density, -10 °C
0.888g/cm³
Viscosity, -10 °C
4 mPa.s
TAPP
Applications
TAPP can be used for the market segments: polymer and acrylics production. For more
information please check our website and/or contact us.
is an initiator (75% active ingredient in isododecane) for(co)polymerization of ethylene,styrene,vinyl chloride, vinylidine chloride and polyols.Polymerization of ethylene: TAPP is an efficient initiator for the ethylene polymerization under high pressure in both autoclave and tubular processes. To
obtain a wide spectrum of polymerization temperatures, combinations with other
peroxides are applied in practice. Polymerization of vinyl chloride: TAPP can
be applied as an initiator for the suspension polymerization of vinyl chloride
in the temperature range between 50°C and 65°C. TAPP may be used in combination
with other initiators to increase reactor efficiency.
Half-life data
Thereactivity of an organic peroxide is usually given by its half-life (t1/2) at
various temperatures. For TAPP in chlorobenzene:
0.1 hr at 91°C (196°F)
1 hr at 72°C (162°F)
10 hr at 54°C (129°F)
Formula1 kd = A·e-Ea/RT
Formula2 t½ = (ln2)/kd
Ea 127.76 kJ/mole
A 4.12E+15 s-1
R 8.3142 J/mole·K
T (273.15+°C) K
Thermal stability
Organic peroxides are thermallyunstable 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.
SADT 25°C (77°F)
Emergency temperature (Tₑ ) 15°C (59°F)
Control temperature (Tc) 10°C (50°F)
Method The Heat Accumulation Storage Test is a recognized test method for the determination of the SADTof organic peroxides (seeRecommendations on the Transportof Dangerous Goods, Manual of Tests and Criteria- United Nations, New York and Geneva).
Storage
Due to the relatively unstablenature of organic peroxides a loss of quality can be detected over a period of
time. To minimize the loss of quality, Do Sender Chem recommends a maximum
storage temperature (Ts max.) for each organic peroxide product.
Ts Max. -10°C (14°F)
Ts Min. -30°C (-22°F) to prevent crystallization
Note When stored according to these recommended storage conditions, TAPP will remain within the Do Sender Chemspecifications for a period of at least3 months after delivery.
Packaging and transport
20 kgcorrugated box packaging
TAPP is classified as Organic peroxide type C; liquid, temperature controlled,
Division 5.2; UN 3113.
Major decomposition products
Carbondioxide, Ethane, Isobutane, Isobutene, Acetone, Methyl ethyl ketone, tert-Amyl
alcohol.
TAPP
Standard
Appearance
Clear liquid, no abnormal impurities
Chroma pt-co #
≤20
Active Oxygen % m/m
6.37±0.085
Assay % m/m
75±1
Hydrogen Peroxide （ as TAHP）% m/m
≤0.10
Chlorine (organic+inorganic hydrolyzable chlorine mg/kg
≤150
Thinner
Isododecane