bis(1-(tert-butylperoxy)-1-methylethyl)-benzene
bis(1-(tert-butylperoxy)-1-methylethyl)-benzene
CAS: 25155-25-3
Molecular Formula: C20H34O4
bis(1-(tert-butylperoxy)-1-methylethyl)-benzene - Names and Identifiers
bis(1-(tert-butylperoxy)-1-methylethyl)-benzene - Physico-chemical Properties
| Molecular Formula | C20H34O4 |
| Molar Mass | 338.48 |
| Density | 1.63g/mLat 25°C(lit.) |
| Melting Point | 44-48°C(lit.) |
| Boling Point | 434.61°C (rough estimate) |
| Flash Point | >230°F |
| Vapor Presure | 0Pa at 20℃ |
| Refractive Index | 1.6000 (estimate) |
bis(1-(tert-butylperoxy)-1-methylethyl)-benzene - Risk and Safety
| Risk Codes | R8 - Contact with combustible material may cause fire R36/37 - Irritating to eyes and respiratory system. R20 - Harmful by inhalation R7 - May cause fire R53 - May cause long-term adverse effects in the aquatic environment |
| Safety Description | S17 - Keep away from combustible material. S36 - Wear suitable protective clothing. S26 - In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. S36/37/39 - Wear suitable protective clothing, gloves and eye/face protection. S3/7 - S14 - Keep away from ... (a list of incompatible materials will follow). |
| UN IDs | UN 3106 5.2 |
| WGK Germany | 1 |
| RTECS | SD8431900 |
| TSCA | Yes |
| Hazard Class | 5.2 |
| Packing Group | II |
| Toxicity | skn-rbt 100%/24H MLD HERBU* PRC-304 |
bis(1-(tert-butylperoxy)-1-methylethyl)-benzene - Reference Information
| LogP | 7.3 at 20℃ |
| EPA chemical information | Information provided by: ofmpub.epa.gov (external link) |
| Introduction | 1, 4-bis-tert-butylperoxycumene is a high-grade crosslinking agent, mainly composed of 1,3-and 1,4-Composition of a mixture of isomers. This product is white powder with 338.49 molecular weight, theoretical active oxygen 9.45%, activation energy 36.1kcal/mol, and half-life of 10 hours at 120 ℃. |
| preparation | a production method of 1,4-bis-tert-butyl peroxycumene, which comprises the following steps: adding reactant A:1kg of low concentration of tert-butyl hydrogen peroxide into a reaction kettle, adding 2g of sodium carbonate and 150g of sodium sulfate respectively to stir reactant a for purification, standing for about 15min, delaminating and draining the bottom water phase, the concentration of purified reactant A is between 68%, then reactant B:0.5kg of diisopropyl alcohol is added, 90g of strong oxidizing catalyst C and 500g of sulfuric acid with a concentration of 65% are added respectively for reaction. The reaction time is about 1.0h, the temperature is controlled between 50 ℃, 500g of detached water is added after the reaction, the water temperature is between 25 ℃, stirring for about 15min, and after standing, after stratification, the water phase at the lower part of the reaction kettle is removed, and the upper oil phase is the crude di (tert-butyl peroxide isopropyl) benzene product with a content of about 80%; the crude product is treated with 20% sodium hydroxide solution and hot water at 60 ℃ After washing, a refined product is obtained with a content of more than 92%. |
| use | this product can be used as crosslinking agent for chlorinated polyethylene, ethylene propylene diene monomer, ethylene vinyl acetate copolymer, silicone rubber, nitrile rubber, fluororubber and other plastics and rubbers. In the case of the same crosslinking effect, the addition amount is about 2/3 of DCP, and the pungent odor in the operation process and the finished product is small. this product can be used as cross-linking agent for rubber and plastics such as silicone rubber, ethylene-vinyl acetate copolymer (such as EVA foam), chlorinated polyethylene rubber (CPE), ethylene propylene diene monomer rubber (EPDM), chlorosulfonated polyethylene, tetrapropylfluororubber (TP-2), saturated hydrogenated nitrile (HNBR), etc. In the case of the same crosslinking effect, the addition amount is about 2/3 of the other organic crosslinking agents. There is no pungent odor during operation and in the products made. It is especially suitable for flexible cord insulation crosslinking and EVA foam products in silicone rubber molded vulcanization room, such as rubber jacket cables for air conditioning, EVA foam toys, etc. Usage: The rubber can be added during mixing. Under the condition of requiring crosslinking effect, the polymer can be completely crosslinked by adding 3 parts. |
Last Update：2024-04-10 22:29:15
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