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Tert-Butyl hydroperoxide

tert-Butyl hydroperoxide (tBuOOH) is an organic peroxide widely used in a variety of oxidation processes, for example Sharpless epoxidation. It is normally supplied as a 69–70% aqueous solution.

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Further Information

Names

Preferred IUPAC name: 2-Methylpropane-2-peroxol

Systematic IUPAC name-Butyl hydroperoxide

Identifiers

CAS Number: 75-91-2

JSmol: Interactive image

Abbreviations: TBHP

Beilstein Reference: 1098280

ChEMBL: ChEMBL348399

ChemSpider: 6170

ECHA InfoCard: 100.000.833

EC Number: 200-915-7

MeSH: tert-Butylhydroperoxide

PubChem: 6410

RTECS number: EQ4900000

UNII: 955VYL842B

UN number: 3109

Properties

Chemical formula: C4H10O2

Molar mass: 90.12 g·mol

Appearance: Colorless liquid

Density: 0.935 g/mL

Melting point: −3 °C (27 °F; 270 K)

Boiling point: 37 °C (99 °F; 310 K) at 2.0 kPa

Solubility in water: miscible

log : 1.23

K: 12.69

K: 1.31

Refractive index: 1.3870

Thermochemistry

Std enthalpy of
formation: −294±5 kJ/mol

Std enthalpy of
combustion: 2.710±0.005 MJ/mol

Hazards

Safety data sheet: [1]

GHS pictograms:

GHS signal word: DANGER

GHS hazard statements: H226 H242 H302 H311 H314 H317 H331 H341 H411

GHS precautionary statements: P220 P261 P273 P280 P305+351+338 P310

NFPA 704:

Flash point: 43 °C (109 °F; 316 K)

Except where otherwise noted, data are given for materials in their(at 25 °C [77 °F], 100 kPa).Except where otherwise noted, data are given for materials in their(at 25 °C [77 °F], 100 kPa).