Perodox 21

TBPEH is an efficient initiator for the production of Low Density Polyethylene (LDPE). It is used both for tubular and autoclave processes. In most cases a combination with other peroxides is used to ensure a broad reactivity range. In suspension polymerization processes, TBPEH can be used for the polymerization of styrene at approximately 90°C. TBPEH has an activity comparable with Dibenzoyl peroxide (BPO75). Typically, TBPEH is used in combination with initiators such as tert-Butyl peroxybenzoate (TBPB) and tert-Butylperoxy 2 ethylhexyl carbonate (TBEC).

CAS No.

3006-82-4

TSCA Status

listed on inventory

Active oxygen content peroxide

7.40%

EINECS/ELINCS No.

221-110-7

Molecular weight

216.3

Concentration

7.22-7.37%

Density, 20 °C

0.900g/cm³

Viscosity, 20 °C

4.3 mPa.s

TBPEH(tert-Butyl peroxy-2-ethylhexanoate) can be used for the market segments: polymer production, thermoset composites and acrylics with their different applications/functions. For more information please check our website and/or contact us.

The reactivity of an organic peroxide is usually given by its half-life (t1/2) at various temperatures. For TBPEH in chlorobenzene half-life at other temperatures can be calculated by using the equations and constants mentioned below:

0.1 hr at 113°C

1 hr at 91°C

10 hr at 72°C

Formula1 kd = A·e-Ea/RT

Formula2 t½= (ln2)/kd

Ea 124.90 kJ/mole

A 1.54E+14 s-1

R 8.3142 J/mole·K

T (273.15+°C) K

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.

SADT 35°C

Emergencytemperature (Tₑ ) 25°C

Controltemperature (Tc) 20°C

Method The Heat Accumulation Storage Test is a recognized test method for the determination of the SADT of organic peroxides (see Recommendations on the

Transport of Dangerous Goods, Manual of Tests and Criteria - United Nations, New York and Geneva).

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, Do Sender Chem recommends a maximum storage temperature (Ts max. ) for each organic peroxide product.

TsMax. 10°C and

TsMin. -30°C to prevent crystallization

Note When stored according to these recommendedstorage conditions, TBPEH will remainwithin the Do Sender Chem specifications for a periodof at least 3 months after delivery.

20 kg polyethylene drum.TBPEH is classified as Organic peroxide type C; liquid, temperature controlled, Division 5.2; UN 3113; PG II. Control Temperature = 20 ℃ Emergency Temperature = 25 ℃

Carbon dioxide, tert-Butanol, Heptane, 3-tert-Butoxyheptane