DHBP-101 is an efficient peroxide for the degradation of polypropylene (CR-PP) in the temperature range of 200-250°C. DHBP-101 can also be used as chaser catalyst to reduce residual monomer in the mass polymerization of styrene.

Specifications

2,5-dihydroperoxy-2,5-dimethylhexane	≤ 0.3 %
Active oxygen	≥ 10.14 %
Appearance	Clear liquid
Assay	≥ 92.0 %
Color	≤ 50 Pt-Co / APHA

Characteristics

Density, 20°C	0.872 g/cm³
Melting point	1-10 °C
Viscosity, 20°C	6.4 mPa.s

Applications

DHBP-101 (2,5-Dimethyl-2,5-di(tert-butylperoxy) hexane) can be used for the market segments: polymer production, polymer crosslinking and acrylics production with their different applications/functions. For more information please check our website and/or contact us.

Half-life data

The reactivity of an organic peroxide is usually given by its half-life (t½) at various temperatures. For DHBP-101 in chlorobenzene half-life at other temperatures can be calculated by using the equations and constants mentioned below:

0.1 hr	at 156°C (313°F)
1 hr	at 134°C (273°F)
10 hr	at 115°C (239°F)
Formula 1	kd = A·e-Ea/RT
Formula 2	t½ = (ln2)/kd
Ea	155.49 kJ/mole
A	1.68E+16 s-1
R	8.3142 J/mole·K
T	(273.15+°C) K

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.

SADT	80°C (176°F)
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).

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

Ts max.	40°C (104°F) and
Ts min.	10°C ( 50°F)
Note	When stored under strictly recommended storage conditions, DHBP-101 will remain within the specifications for a period of at least 12 months after delivery.

Packaging and transport

In North America DHBP-101 is packed in non-returnable, 5 gallon polyethylene containers of 35 lb net weight. In other regions the standard packaging is a 30-liter HDPE can for 25 kg peroxide solution. Both packaging and transport meet the international regulations. For the availability of other packed quantities contact your Greenrox representative. DHBP-101 is classified as Organic peroxide type C; liquid, Division 5. 2; UN 3103.

Safety and handling

Keep containers tightly closed. Store and handle DHBP-101 in a dry well-ventilated place away from sources of heat or ignition and direct sunlight. Never weigh out in the storage room. Avoid contact with reducing agents (e. g. amines), acids, alkalis and heavy metal compounds (e. g. accelerators, driers and metal soaps). Please refer to the Safety Data Sheet (SDS) for further information on the safe storage, use and handling of DHBP-101. This information should be thoroughly reviewed prior to acceptance of this product.

Major decomposition products

Acetone, Methane, tert-Amyl alcohol, tert-Butanol, Ethane