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