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.