tert-Butyl peroxide
Di-tert-butyl peroxide
CAS: 110-05-4
Molecular Formula: C8H18O2
tert-Butyl peroxide - Names and Identifiers
| Name | Di-tert-butyl peroxide |
| Synonyms | DTBP Trigonox?B (tert-C4H9O)2 Dibutylperoxide (tributyl)peroxide tert-Butyl peroxide bis(t-butyl)peroxide Di-tert-butyl peroxide bis(tert-butyl)peroxide Bis(tert-butyl) peroxide Aztec di-t-butyl peroxoide bis(1,1-dimethylethyl)-peroxid 2-(tert-butylperoxy)-2-methylpropane 2-(tert-Butylperoxy)-2-methylpropane |
| CAS | 110-05-4 |
| EINECS | 203-733-6 |
| InChI | InChI=1/C8H18O2/c1-7(2,3)9-10-8(4,5)6/h1-6H3 |
| InChIKey | LSXWFXONGKSEMY-UHFFFAOYSA-N |
tert-Butyl peroxide - Physico-chemical Properties
| Molecular Formula | C8H18O2 |
| Molar Mass | 146.23 |
| Density | 0.796 g/mL at 25 °C(lit.) |
| Melting Point | -30 °C |
| Boling Point | 109-110°C(lit.) |
| Flash Point | 34°F |
| Water Solubility | immiscible |
| Solubility | 0.063g/l |
| Vapor Presure | 40 mm Hg ( 20 °C) |
| Appearance | Liquid |
| Color | Clear |
| Merck | 14,3461 |
| BRN | 1735581 |
| Storage Condition | Store at +15°C to +25°C. |
| Stability | May decompose explosively if heated, subjected to shock, or treated with reducing agents. Highly flammable. Refrigerate. |
| Refractive Index | n20/D 1.3891(lit.) |
| Physical and Chemical Properties | density 0.796 melting point -30°C boiling point 109-110°C refractive index 1.388-1.390 flash point 34 °F water-soluble immiscible |
| Use | Widely used as crosslinking agent of unsaturated polyester and silicone rubber, polymerization initiator of monomer, polypropylene modifier, rubber curing agent |
tert-Butyl peroxide - Risk and Safety
| Risk Codes | R7 - May cause fire R11 - Highly Flammable R68 - Possible risk of irreversible effects R52/53 - Harmful to aquatic organisms, may cause long-term adverse effects in the aquatic environment. R2017/7/11 - |
| Safety Description | S14 - Keep away from ... (a list of incompatible materials will follow). S16 - Keep away from sources of ignition. S3/7 - S36/37/39 - Wear suitable protective clothing, gloves and eye/face protection. S14A - S61 - Avoid release to the environment. Refer to special instructions / safety data sheets. S23 - Do not breathe vapour. |
| UN IDs | UN 3107 5.2 |
| WGK Germany | 1 |
| RTECS | ER2450000 |
| HS Code | 2909 60 00 |
| Hazard Class | 5.2 |
| Packing Group | II |
| Toxicity | LD50 orally in Rabbit: > 25000 mg/kg |
tert-Butyl peroxide - Upstream Downstream Industry
| Raw Materials | Hydrogen peroxide tert-Butanol |
tert-Butyl peroxide - Reference Information
| LogP | 3.2 at 22℃ |
| NIST chemical information | information provided by: webbook.nist.gov (external link) |
| EPA chemical substance information | information provided by: ofmpeb.epa.gov (external link) |
| Overview | di-tert-butyl peroxide (DTBP) is an organic peroxide that can be used as a crosslinking agent for unsaturated polyester and silicone rubber, it is also used as a polymerization initiator. |
| properties | the production process of DTBP (initiator A) is carried out intermittently, with wastewater quality, quantity, organic matter concentration, pH, salt content, BOD/CDO values vary with production scale and time, and peak-to-valley values vary greatly. DTBP thermal instability, easy to accelerate the decomposition, causing explosion; Dissolved in wastewater DTBP also rapidly decomposed at high temperature, there are also security risks. A large amount of waste acid is produced in the production process, and a large amount of alkali washing waste liquid is produced during the purification of the product. The concentration of pollutants in wastewater is high, the composition is complex, and the B/C value is very low, which can not be treated by biochemical treatment. Direct discharge of such wastewater into rivers can lead to serious water pollution. |
| Application | DTBP (initiator A) is one of the most stable Organic Peroxide initiators and a commonly used variety. As the cross-linking agent, it can be used for silicone rubber, synthetic rubber and natural rubber, polyethylene, EVA and EPT, etc. As the polymerization initiator, polystyrene and polyethylene can be used. It can also be used for grease food bleaching agent, diesel oil and lubricating oil additives, transformer pour point depressant. |
| acute hazard | di-tert-butyl peroxide is highly flammable. Many reactions may cause a fire or explosion. The vapor/air mixture is explosive. |
| hazard category | 5.2 |
| Use | used as a crosslinking agent for unsaturated polyester and silicone rubber, and also used as a polymerization initiator. The theoretical active oxygen content is 10.94%, the activation energy is 146.9kJ/mol, the half-life is 218h(100 C), 34h(115 C), 0.15h(130 C). This product and reducing agent contact or shock will be explosive. Flash point 18 ° C, flammable, its vapor and air mixed to form an explosive mixture. Can stimulate the eyes, skin and respiratory tract. di-tert-butyl peroxide (DTBP) is useful as a cross-linking agent for unsaturated polyesters and silicone rubbers, and also as a polymerization initiator. The theoretical active oxygen content is 10.94%, the activation energy is 35.4200J/mol, the half-life is 218h(100 degrees C), 34h(115 degrees C), 0.15h(130 degrees C). The product will be exposed to the reducing agent or the impact of the explosion. Flash point 18 ° C, flammable, its vapor and air form an explosive mixture. Can stimulate the eyes, skin and respiratory tract. widely used as crosslinking agent of unsaturated polyester and silicone rubber, polymerization initiator of monomer, polypropylene modifier, rubber curing agent, etc. |
| production method | is obtained by reacting tert-butyl alcohol with hydrogen peroxide in concentrated sulfuric acid. A mixture of 222g(3mol) of tert-butanol and 70% g(1mol) of sulfuric acid was cooled to -2 to -8 °c. Under vigorous stirring, 126g(1mol) of 27% hydrogen peroxide and g(4mol) of concentrated sulfuric acid were added dropwise over 90min, and stirring was continued for 3h after addition. The oil layer was separated, washed with 60ml of water, then with 30% sodium hydroxide solution to remove tert-butyl hydroperoxide, and finally with water. Magnesium sulfate was added, dried and filtered to obtain the finished product. |
| category | oxidant |
| toxicity grade | poisoning |
| Acute toxicity | inhalation-rat LC50: 4100 PPM/ 4 hours; Oral-mouse LD50: 4572 mg/kg |
| stimulation data | Skin-rabbit 500 mg moderate; eye-rabbit 500 mg/24 h mild |
| explosive hazard characteristics | can be mixed with reducing agent, sulfur, phosphorus, etc, impact exploitable |
| flammability hazard characteristics | flammable materials such as organic matter, reducing agent, sulfur, phosphorus and other flammable materials, as well as open flame, friction and impact; combustion-induced smoke |
| storage and transportation characteristics | warehouse ventilation at low temperature; Light loading and light unloading; With organic matter, reducing agent, sulfur, separate storage of phosphorus flammability |
| fire extinguishing agent | foam, carbon dioxide, dry powder |
| spontaneous combustion temperature | 182°C |
| toxic substance data | information provided by: pubchem.ncbi.nlm.nih.gov (external link) |
Last Update：2024-04-09 20:49:11
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Raw Materials for tert-Butyl peroxide