boron trifluoride butyl ether
boron trifluoride dibutyl etherate
CAS: 593-04-4
Molecular Formula: C8H18BF3O
boron trifluoride butyl ether - Names and Identifiers
| Name | boron trifluoride dibutyl etherate |
| Synonyms | N-BUTYLETHERBORONTRIFLUORIDE boron trifluoride butyl ether BORON TRIFLUORIDE-DIBUTYL ETHER BORON TRIFLUORIDE DIBUTYL ETHERATE boron trifluoride dibutyl etherate Boron trifluoride-butyl ether complex BORON TRIFLUORIDE-BUTYL ETHER COMPLEX BORON TRIFLUORIDE N-BUTYL ETHER COMPLEX 1'-oxybis(butane)),(T-4)-Borontrifluoro(1 1'-oxybis[butane]]-trifluoro[(beta-4)-boro |
| CAS | 593-04-4 |
| EINECS | 209-783-5 |
| InChI | InChI=1/C8H18O.BF3/c1-3-5-7-9-8-6-4-2;2-1(3)4/h3-8H2,1-2H3 |
boron trifluoride butyl ether - Physico-chemical Properties
| Molecular Formula | C8H18BF3O |
| Molar Mass | 198.03 |
| Density | 0.959g/mLat 25°C(lit.) |
| Boling Point | 142.1°C at 760 mmHg |
| Flash Point | 158°F |
| Vapor Presure | 7.1mmHg at 25°C |
| Appearance | Liquid |
| Color | Pale yellow to brown |
| Storage Condition | Room Temprature |
| MDL | MFCD00013195 |
boron trifluoride butyl ether - Risk and Safety
| Hazard Symbols | T - Toxic |
| Risk Codes | R23/24/25 - Toxic by inhalation, in contact with skin and if swallowed. R34 - Causes burns |
| Safety Description | S26 - In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. S27 - Take off immediately all contaminated clothing. S36/37/39 - Wear suitable protective clothing, gloves and eye/face protection. S45 - In case of accident or if you feel unwell, seek medical advice immediately (show the label whenever possible.) |
| UN IDs | UN 3264 8/PG 2 |
| WGK Germany | 3 |
| HS Code | 29310099 |
| Hazard Class | 8 |
| Packing Group | III |
boron trifluoride butyl ether - Reference Information
| overview | boron trifluoride butyl ether complex can be used as a catalyst for the synthesis of polyoxymethylene resin. boron trifluoride ether complex is mostly used at home and abroad. later, boron trifluoride butyl ether complex is also reported abroad. |
| use | boron trifluoride butyl ether complex is mostly used as a catalyst. examples of its application are as follows: preparing an ethylene-oxymethylene copolymer. |
| preparation | 1) 350 ml of boron trifluoride butyl ether complex is placed in a 1-liter beaker, and ammonia is slowly passed under stirring until all of them become white powder. The beaker is cooled with chlorinated ice water and the temperature is controlled at -5 ~-15 ℃. Larger particles that are not completely reacted can be moved to the enamel disk for crushing and then ammonia. The resulting white ammonia compound is dried in the air, and the excess ammonia is volatilized for later use. Due to the low BF3 content in boron trifluoride butyl ether complex solution and the purity calculated by 75%, the ammonia compound yield is higher than that of 90%. 2) 326g of boron trifluoride ammonia compound is filled in the reaction bottle and 400 ml of pure n-butyl ether is filled in the absorption bottle. Slowly heat the reaction bottle and start dropping concentrated sulfuric acid when the internal temperature is higher than 10 ℃. Clean the air in the bottle, and when white smoke is emitted, pass BF3 into butyl ether. The coolant temperature is controlled at -5 ~-10 ℃. When the temperature in the reaction bottle reaches above 150 ℃, more BF3 gas is generated, and the ventilation speed is limited to BF3 gas not exceeding the upper mouth of the absorption bottle. When it is found that the foam in the reaction bottle exceeds 2/3 of the total volume, the acid dripping speed should be slowed down, the temperature should be adjusted, and the temperature should be properly heated and the acid dripping speed should be accelerated when the foam drops to 1/2. Too little gas produces n-butyl ether back suction. The temperature in the later period can reach 220 ℃. When a small amount of yellow oily droplets are found at the mouth of the exhaust tail pipe and white smoke is emitted, it indicates that butyl ether can no longer absorb BF3 and the reaction is over. Stop dripping acid and heating, and clamp both ends of the absorption bottle to obtain 410g of red-brown crude butyl ether complex. According to the reaction formula, the two-gram molecule ammonia compound should consume one gram molecule of sulfuric acid, but the actual amount of sulfuric acid is 1.2 gram molecule, which may be related to the poor contact of the material without stirring in the bottle. In order to ensure that there is a sufficient amount of BF3 to convert all n-butyl ether into butyl ether complex, so that the ammonia compound is excessive, so BF. The utilization rate is only 65%, which is lower than the 75% of the literature value. It is worth noting that concentrated sulfuric acid must be added dropwise, and sulfuric acid and ammonia must not be heated together in a bottle, otherwise the reaction will be severe. The prepared crude butyl ether complex was distilled under vacuum under 3nrmHg, and the slightly yellow transparent oily liquid with 73~75 ℃ fraction was cut as pure product. During distillation, it is found that the tower temperature sometimes fluctuates, indicating that the butyl ether complex is not very stable when heated |
| EPA chemical substance information | The information is: offered by ofmpub.epa.gov (external link) |
Last Update：2024-04-10 22:29:15
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