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

ItemContent
Product NameInitiator LQ-DPIB
Chemical NameDi(tert-butylperoxyisopropyl)benzene
Molecular FormulaC₂₀H₃₄O₄
Molecular Weight338.5
Theoretical Active Oxygen Content9.45%
CAS No.25155-25-3
Einecs218-664-7
UN No.3106
IMDG ClassificationClass 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 hour156°C
1 hour134°C
10 hours115°C

Thermal Stability Data

Thermal Stability ParameterTemperature
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

ItemContent
AppearanceWhite solid powder or flake
Purity96% min

Applications

ApplicationDetails
Polypropylene Degradation AgentExcellent 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 PolymerizationInitiator for styrene polymerization. Produces higher molecular weight PS with higher polymerization conversion.
Rubber VulcanizationCommon 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

PackagingDetails
Standard Packaging20 kg corrugated cardboard box. Custom packaging available upon request.

Storage Considerations

Storage PrecautionDetails
Storage EnvironmentStore in a cool, ventilated area with a maximum temperature of 15°C.
Avoid Contact withAcids, reducing agents, flammable materials, and combustibles.
Storage FacilityEnsure explosion-proof lighting and ventilation, and switches placed outdoors.
Handling PrecautionHandle with care, prevent package/container damage, and ensure proper personal protective equipment (PPE).

Storage Stability

Storage ConditionDetails
StabilityProduct quality is guaranteed for 6 months if stored and transported under proper conditions.

Fire Protection

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

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