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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HCID 76997Generated: October 23, 2026

Tert-butyl cumene peroxide

t-Butyl cumyl peroxide · NA-2091 · Trigonox T · Kayabutyl C · Luperox 801 · Lupersol 801 · Luperox D 16 · Trigonox T 40

https://huagongshe.com/en/chemical/76997

Tert-butyl cumene peroxide molecular structure

Identifiers & Physical Properties

CAS No.30026-92-7
Molecular formulaC13H20O2
Average molar mass208.3 g/mol
Monoisotopic mass208.14632988 g/mol
SMILESCC(C)(C)OOC(C)(C)c1ccccc1
InChIKeyBIISIZOQPWZPPS-UHFFFAOYSA-N
PubChem CID76997
EC No.222-389-8
DTXSIDDTXSID9063039

Chemical & Physical Properties

XLogP3.2
Topological polar surface area18.5
Hydrogen bond donors0
Hydrogen bond acceptors2
Rotatable bonds4
Heavy atoms15
Formal charge0
Complexity185
SpringerMaterials PropertiesBoiling point
Physical DescriptionCBILiquid
Melting point5-8 °C
Boiling point287.5°C (rough estimate)
Density0.94
Vapor pressure14Pa at 40℃
Refractive index1.419-1.423
Flash point72 °C
Storage conditionsIndoors
Solubility10.66mg/L at 20℃
Henry's law constant1.4×10-2 mol/(m3Pa) at 25℃, Zhang et al. (2010)
LogP (partition coefficient)4.4 at 25℃
CAS DataBase Reference3457-61-2
FDA UNIIJ78XB9M8IR
EPA Substance Registry SystemPeroxide, 1,1-dimethylethyl 1-methyl-1-phenylethyl (3457-61-2)
GHS pictogramGHS02,GHS07,GHS09
Signal wordWarning
GHS hazard statementsH242-H315-H411
GHS precautionary statementsP210-P234-P235-P240-P280-P264-P273-P370+P378-P302+P352-P332+P313-P362+P364-P391-P403-P410-P411-P420-P501
Hazard symbolsN-Xi-O,N,Xi,O
Risk statements (R)7-51/53-38
Safety statements (S)61-36/37/39-3/7-14A-14
UN transport number3105
TSCA inventory statusTSCA listed
Hazard class5.2
Packing groupII
Customs code29096000
REACH registrationsActive

Safety & Regulations

GHS classificationWarningH242: Heating may cause a fire [Danger Self-reactive substances and mixturesOrganic peroxides]P210, P234, P235, P240, P264, P273, P280, P302+P352, P321, P332+P317, P362+P364, P370+P378, P391, P403, P410, P411, P420, and P501 (click each P-code to see the statement)H242 (100%): Heating may cause a fire [Danger Self-reactive substances and mixturesP210, P234, P235, P240, P261, P264, P272, P273, P280, P302+P352, P321, P332+P317, P333+P317, P362+P364, P370+P378, P391, P403, P410, P411, P420, and P501 (click each P-code to see the statement)
Regulatory informationChemical: Peroxide, 1,1-dimethylethyl 1-methyl-1-phenylethylPeroxide, 1,1-dimethylethyl 1-methyl-1-phenylethyl is listed on the EPA's Chemical Data Reporting (CDR) system. Manufacturers and importers of Peroxide, 1,1-dimethylethyl 1-methyl-1-phenylethyl are required to report information about their production and use of this chemical to the EPA under the Toxic Substances Control Act (TSCA). (40 eCFR Part 711)Status: Active Update: 17-07-2019 https://echa.europa.eu/registration-dossier/-/registered-dossier/13239
DOT labelOrganic Peroxide
Fire hazardsExcerpt from ERG Guide 145 [Organic Peroxides (Heat and Contamination Sensitive)]:
Health hazardsExcerpt from ERG Guide 145 [Organic Peroxides (Heat and Contamination Sensitive)]:
Reactive groupPeroxides, Organic
Reactivity AlertsExplosive
Reactivity ProfilePeroxides, such as TERT-BUTYL CUMENE PEROXIDE, are good oxidizing agents. Organic compounds can ignite on contact with concentrated peroxides. Strongly reduced material such as sulfides, nitrides, and hydrides may react explosively with peroxides. There are few chemical classes that do not at least produce heat when mixed with peroxides. Many produce explosions or generate gases (toxic and nontoxic). Generally, dilute solutions of peroxides (<70%) are safe, but the presence of a catalyst (often a transition metal such as cobalt, iron, manganese, nickel, or vanadium) as an impurity may even then cause rapid decomposition, a buildup of heat, and even an explosion. Solutions of peroxides often become explosive when evaporated to dryness or near-dryness. May explode from heat or contamination. May ignite combustibles (wood, paper, oil, clothing, etc.). May be ignited by heat, sparks or flames.
Air and Water ReactionsNo rapid reaction with air. No rapid reaction with water.
Hazard Classes and CategoriesOrg. Perox. E (100%)Organic peroxide - type EFlammable liquids - Category 3
Fire fightingExcerpt from ERG Guide 145 [Organic Peroxides (Heat and Contamination Sensitive)]:
First aidExcerpt from ERG Guide 145 [Organic Peroxides (Heat and Contamination Sensitive)]:
Nonfire spill responseExcerpt from ERG Guide 145 [Organic Peroxides (Heat and Contamination Sensitive)]:
Isolation and EvacuationExcerpt from ERG Guide 145 [Organic Peroxides (Heat and Contamination Sensitive)]:
Personal Protective Equipment (PPE)Excerpt from ERG Guide 145 [Organic Peroxides (Heat and Contamination Sensitive)]:
TSCA inventory statusTSCA listed
UN transport number3105
Customs code29096000
Risk statements (R)7-51/53-38
Signal wordWarning
GHS pictogramGHS02,GHS07,GHS09
Hazard symbolsN-Xi-O,N,Xi,O
Safety statements (S)61-36/37/39-3/7-14A-14
Hazard class5.2
Packing groupII
GHS hazard statementsH242-H315-H411
REACH registrationsActive
GHS precautionary statementsP210-P234-P235-P240-P280-P264-P273-P370+P378-P302+P352-P332+P313-P362+P364-P391-P403-P410-P411-P420-P501

Applications & Uses

Uses

1,1-Dimethylethyl 1-methyl-1-phenylethyl Peroxide (Technical Grade) acts as a crosslinking peroxide in polymerization reactions.