SoleChem

t-Butyl hydroperoxide

CAS 75-91-2
EC 200-915-7
Formula C4H10O2
MW 90.12 g/mol
Oxidizers & Peroxides Plastics & PolymersLubricants & MetalworkingBiotechnology & Life Sciences Polymerization InitiationCatalysisBleaching & Whitening

Description

T-Butyl Hydroperoxide (TBHP, CAS 75-91-2) is an organic peroxide supplied as an aqueous solution, commercially available under trade names including Cadox TBH, T-HYDRO, Perbutyl H, and Kayabutyl H. It carries EC number 200-915-7 and is classified under HS code 29094990.

In plastics and polymer manufacturing, TBHP functions as a free-radical initiator, generating reactive radicals upon thermal or catalytic decomposition to drive polymerisation reactions. In lubricant and metalworking formulations, it acts as an oxidation catalyst, and in biotechnology applications it serves as a controlled oxidative reagent for bleaching and selective chemical transformations.

TBHP is available in stabilised aqueous solutions at concentrations typically ranging from 70% to 80%, with grades conforming to REACH registration requirements for supply within the EU. Packaging formats include IBC containers and drums suited to industrial procurement volumes.

Physical Properties

Melting Point -8 °C
Boiling Point 35 °C @ Press: 20 Torr
Density 0.8960 g/cm³ @ Temp: 20 °C
Flash Point 85 °F
Appearance colourless liquid (as an aqueous solution) with a sweet smell
Color Clear colorless
Form Liquid
Water Solubility Miscible
Vapor Pressure 62 mmHg at 45 °C
Refractive Index n 20/D 1.403
pH 4.3
Log P 1.230 (est)

Safety & Handling (Learn More)

Danger GHS08 GHS02 GHS05 GHS06 GHS07 GHS09 GHS01
H
H225H226H240H242H301H302H311H312H314H317H318H330H331H332H335H336H341H350H370H371H372H373H401H411
P
P203P210P233P234P235P240P241P242P243P260P261P262P264P270P271P272P273P280P284P316P317P318P319P320P321P330P363P391P403P405P410P411P420P501P264+P265P301+P316P301+P317P302+P352P304+P340P308+P316P333+P317P361+P364P362+P364P370+P378P403+P233P403+P235P301+P330+P331P302+P361+P354P303+P361+P353P305+P354+P338P370+P372+P380+P373

Trade & Regulatory

HS Code 29094990
UN Number 3109
ADR Class 5.2
Storage Class 5.2 - Organic peroxides and self-reacting hazardous materials
WGK (Germany) 3

Other Names

Tert-Butyl hydroperoxide2-hydroperoxy-2-methylpropanet-ButylhydroperoxideTBHPCadox TBHT-HYDRO(R)Perbutyl H

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