SoleChem

tert-butyl hydroperoxide

CAS
75-91-2
EC
200-915-7
Mol. Weight
90.12 g/mol

Description

Tert-butyl hydroperoxide (CAS 75-91-2), commonly abbreviated as TBHP, is an organic peroxide used industrially as a radical source for initiating polymerization and driving oxidation reactions.

Its controlled reactivity makes it a preferred alternative to inorganic peroxides where selectivity and handling convenience matter. In plastics manufacturing, it initiates free-radical polymerization and crosslinking.

This chemical is essential in the production of acrylics, polyethylene, and rubber compounds. Lubricant formulators use it as an oxidation catalyst to modify base oils and synthesize sulfoxide or epoxide intermediates.

In biotechnology and life sciences, it serves as a reference oxidant in cellular stress assays and enzyme activity studies. It is used where reproducible oxidative challenge is required for research.

It also functions as a bleaching agent in textile and pulp processing. This application is ideal where peroxide-based whitening must be applied under mild conditions to protect the substrate integrity.

The product is supplied as an aqueous solution, most commonly at 70% concentration. Anhydrous and higher-concentration grades are available for specific industrial applications requiring low water content.

Technical grade is the standard for polymer and lubricant applications. Handling and storage specifications vary by concentration, and buyers typically source it in drums or IBC containers for bulk use.

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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)

Warning GHS08 GHS02 GHS05 GHS06 GHS07 GHS09 GHS01
Hazard Statements
H225 Highly Flammable liquid and vapor
H226 Flammable liquid and vapor
H240 Heating may cause an explosion
H242 Heating may cause a fire
H301 Toxic if swallowed
H302 Harmful if swallowed
H311 Toxic in contact with skin
H312 Harmful in contact with skin
H314 Causes severe skin burns and eye damage
H317 May cause an allergic skin reaction
H318 Causes serious eye damage
H330 Fatal if inhaled
H331 Toxic if inhaled
H332 Harmful if inhaled
H335 May cause respiratory irritation
H336 May cause drowsiness or dizziness
H341 Suspected of causing genetic defects
H350 May cause cancer
H370 Causes damage to organs
H371 May cause damage to organs
H372 Causes damage to organs through prolonged or repeated exposure
H373 May causes damage to organs through prolonged or repeated exposure
H401 Toxic to aquatic life
H411 Toxic to aquatic life with long lasting effects
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.
P233 Keep container tightly closed.
P234 Keep only in original packaging.
P235 Keep cool.
P240 Ground and bond container and receiving equipment.
P241 Use explosion-proof [electrical/ventilating/lighting/…] equipment.
P242 Use non-sparking tools.
P243 Take action to prevent static discharges.
P260 Do not breathe dust/fume/gas/mist/vapours/spray.
P261 Avoid breathing dust/fume/gas/mist/vapours/spray.
P262 Do not get in eyes, on skin, or on clothing.
P264 Wash … thoroughly after handling.
P270 Do not eat, drink or smoke when using this product.
P271 Use only outdoors or in a well-ventilated area.
P272 Contaminated work clothing should not be allowed out of the workplace.
P273 Avoid release to the environment.
P280 Wear protective gloves/protective clothing/eye protection/face protection.
P284 In case of inadequate ventilation wear respiratory protection.
P316 Get emergency medical help immediately.
P317 Get emergency medical help.
P318 IF exposed or concerned, get medical advice.
P319 Get medical advice/attention if you feel unwell.
P320 Specific treatment is urgent (see … on this label).
P321 Specific treatment (see … on this label).
P330 Rinse mouth.
P363 Wash contaminated clothing before reuse.
P391 Collect spillage.
P403 Store in a well-ventilated place.
P405 Store locked up.
P410 Protect from sunlight.
P411 Store at temperatures not exceeding … °C/…°F.
P420 Store away from other materials.
P501 Dispose of contents/container in accordance with local regulations.
P264+P265 Wash … thoroughly after handling.
P301+P316 Get emergency medical help immediately.
P301+P317 Get emergency medical help.
P302+P352 IF ON SKIN: Wash with plenty of water.
P304+P340 IF INHALED: Remove person to fresh air and keep comfortable for breathing.
P308+P316 Get emergency medical help immediately.
P333+P317 Get emergency medical help.
P361+P364 Take off immediately all contaminated clothing and wash it before reuse.
P362+P364 Take off contaminated clothing and wash it before reuse.
P370+P378 Use … for extinction.
P403+P233 Store in a well-ventilated place. Keep container tightly closed.
P403+P235 Store in a well-ventilated place. Keep cool.
P301+P330+P331 Rinse mouth. Do NOT induce vomiting.
P302+P361+P354 IF ON SKIN: Take off immediately all contaminated clothing. Rinse skin with water/shower.
P303+P361+P353 IF ON SKIN (or hair): Take off immediately all contaminated clothing. Rinse skin with water/shower.
P305+P354+P338 IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.
P370+P372+P380+P373 Explosion risk. Evacuate area. DO NOT fight fire when fire reaches explosives.

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

Documentation

Other Names

Tertiary-butyl hydroperoxide|t-Butylhydroperoxide|Dimethylethyl hydroperoxide|2-Hydroperoxy-2-methylpropane|1,1-Dimethylethyl hydroperoxide|TBHP|Perbutyl H|Cadox TBH

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