2,2-Di(tert-butylperoxy)butane (DBPB) Manufacturer

2,2-Di(tert-butylperoxy)butane (DBPB)

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CAS No.: 2167-23-9

Chemical Family Organic Peroxide
Molecular Formula C₁₂H₂₆O₄
Molecular Weight 234.3
EINECS 218-507-2
UN No. 3103
Road Transport (ADR) 5.2
Rail Transport (RID) 5.2
Sea Transport (IMDG) 5.2

Half-Life Period
(measured in chlorobenzene solution)

0.1 hour 136℃
1 hour 116℃
10 hours 98℃

Appearance: Colorless clear liquid

Solubility: Insoluble in water, soluble in most organic solvents

Concentration: 50.0 ±1.0%

Tert-butyl hydrogen peroxide content: ≤0.3%

Chromaticity: 20Pt-Co max

Density: 805kg/m³ (20℃)

Viscosity: 2mPa.s (20°C)

Theoretical active oxygen content: 13.66%

Major decomposition products: methane, ethane, acetone, 2-methoxy-2-methylpropane, tert-butyl alcohol, carbon dioxide

Activation energy: 154.08 kJ/mole

Self-accelerating decomposition temperature (SADT): 70℃

Hazardous temperature (Tem): 65℃

Storage temperature (Ts max): 30℃

Applications

DBPB is primarily used in the polymerization of styrene and styrene copolymers via suspension methods, within a temperature range of 90°C to 130°C. It can be blended with isododecane, ethylbenzene, or mineral oil, depending on specific customer requirements. Compared to thermal polymerization, DBPB offers several advantages, including lower residual monomer levels, higher conversion rates, and faster reaction speeds.

Packaging

DBPB is typically packaged in 20 kg polyethylene drums. Custom packaging sizes can also be provided upon request.
Validity

When stored under the manufacturer’s recommended conditions, the product retains its quality for up to three months.
Storage

DBPB should be stored within the temperature guidelines provided by the manufacturer. Exceeding the critical storage temperature can lead to fire hazards.
The storage area should be kept free from open flames, heat sources, and static electricity, with proper ventilation and protection from light.
For large quantities, it is recommended to use a dedicated storage facility. The product should be kept away from reducing agents, rust, dust, heavy metal ions, acids, and bases.
Handle with care to avoid impact and friction.

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