LQ-DPIB Di(tert-butylperoxyisopropyl)benzene 25155-25-3

Item Content
Product Name Initiator LQ-DPIB
Chemical Name Di(tert-butylperoxyisopropyl)benzene
Molecular Formula C₂₀H₃₄O₄
Molecular Weight 338.5
Theoretical Active Oxygen Content 9.45%
CAS No. 25155-25-3
Einecs 218-664-7
UN No. 3106
IMDG Classification Class 5.2, Type D solid organic peroxide, Class 2 packaging

Major Decomposition Products

Decomposition Product
Tert-butyl alcohol
Di-hydroxy diisopropylbenzene
Acetylated phenylacetone
Acetyl-2-hydroxy-isopropylbenzene
Methane
Acetone

Safety Indicators

Half-Life (at various temperatures) Temperature
0.1 hour 156°C
1 hour 134°C
10 hours 115°C

Thermal Stability Data

Thermal Stability Parameter Temperature
Self-accelerating Decomposition Temperature (SADT) 80°C
Critical Temperature (Tem) 75°C
Storage Temperature (Tsmax) --/15°C
Activation Energy (E) 152.69 KJ/mol

Technical Standards

Item Content
Appearance White solid powder or flake
Purity 96% min

Applications

Application Details
Polypropylene Degradation Agent Excellent degradation agent for polypropylene, used to create low molecular weight and narrow molecular weight distribution high melt index rheological polypropylene. Important initiator for controlled rheological polypropylene.
Styrene Polymerization Initiator for styrene polymerization. Produces higher molecular weight PS with higher polymerization conversion.
Rubber Vulcanization Common rubber vulcanization agent with excellent scorch safety. Typically diluted with silicone oil or other neutral solvents or fillers. Safe processing temperature is 135°C, crosslinking temperature is 175°C.

Packaging and Transport

Packaging Details
Standard Packaging 20 kg corrugated cardboard box. Custom packaging available upon request.

Storage Considerations

Storage Precaution Details
Storage Environment Store in a cool, ventilated area with a maximum temperature of 15°C.
Avoid Contact with Acids, reducing agents, flammable materials, and combustibles.
Storage Facility Ensure explosion-proof lighting and ventilation, and switches placed outdoors.
Handling Precaution Handle with care, prevent package/container damage, and ensure proper personal protective equipment (PPE).

Storage Stability

Storage Condition Details
Stability Product quality is guaranteed for 6 months if stored and transported under proper conditions.

Fire Protection

Fire Protection Details
Small Fire Handling Small fires should be extinguished quickly using foam or dry powder fire extinguishers.
Large Fire Handling For large fires, evacuate to a safe distance and extinguish with large amounts of water. Notify fire department for assistance.

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