Oxidizers & Peroxides
REACH
Cumene hydroperoxide
CAS Number
80-15-9
EC Number
201-254-7
Abbreviation
CHP
What is Cumene hydroperoxide?
Cumene hydroperoxide (CAS 80-15-9), also known as CHP or isopropylbenzene hydroperoxide, is an organic peroxide used industrially as a free-radical source for initiating polymerization and curing reactions.
Where is Cumene hydroperoxide used?
- Rubber and polymer manufacturing: oxidizing agent for controlled radical generation
- Rubber compounding: cross-linking agent
- Vulcanization of silicone and specialty elastomers for heat resistance and mechanical performance
- Emulsion and solution polymerization initiation
- Styrene, acrylates and other vinyl monomers for resins and synthetic rubbers
- Redox initiator systems: co-agent with reducing agents
- Tire manufacturing: CHP-based curing systems achieve consistent crosslink density.
Good to know: Enables low-temperature polymerization, a requirement in cold rubber processes.
Commercial specifications
- Liquid, typically 80% or 88% active solution in cumene
- Bulk liquid in drums and IBC containers
- Concentration and purity confirmed by titration or GC analysis per buyer specification
Other Names (Synonyms)
Isopropylbenzene hydroperoxide|Cumyl hydroperoxide|Cumenyl hydroperoxide|alpha,alpha-Dimethylbenzyl hydroperoxide|alpha-Cumyl hydroperoxide|alpha-Cumene hydroperoxide|7-Cumyl hydroperoxide|1-Methyl-1-phenylethyl hydroperoxide|CHP
What are the physical properties of Cumene hydroperoxide?
Melting Point -10 °C
Boiling Point 53 °C @ Press: 0.098 Torr
Density 1.0619 g/cm³ @ Temp: 20 °C
Flash Point 192 °C
Appearance Cumene hydroperoxide, an organic peroxide, is a colorless to pale yellow to green liquid. Mild odor.
Color Colorless to Almost colorless
Form clear liquid
Water Solubility Slightly soluble
Vapor Pressure <0.03 mm Hg ( 20 °C)
Refractive Index n 20/D 1.5230
pH >5 (20°C, 13g/L in H2O)
Log P 1.6 at 25℃
How is Cumene hydroperoxide classified and handled safely? Learn More
Danger
GHS02· Flammable GHS05· Corrosive GHS06· Toxic GHS08· Health Hazard GHS09· Environmental Hazard GHS07· Irritant
Hazard Statements
H227 Combustible liquid
H242 Heating may cause a fire
H302 Harmful if swallowed
H311 Toxic in contact with skin
Precautionary Statements
P203 Obtain, consult and follow expert instructions for use.
P210 Keep away from heat, hot surfaces, sparks, open flames and other ignition sources. No smoking.
P234 Keep only in original packaging.
P235 Keep cool.
Which trade and regulatory codes apply to Cumene hydroperoxide?
HS Code 29096000
UN Number 3109
ADR Class 5.2
Storage Class 5.2 - Organic peroxides and self-reacting hazardous materials
WGK (Germany) 3