aluminum triethanide
Triethyl aluminium
CAS: 97-93-8
Molecular Formula: C6H15Al
aluminum triethanide - Names and Identifiers
| Name | Triethyl aluminium |
| Synonyms | TRIETHYLALUMINUM Triethylaluminum TRIETHYLALUMINIUM Triethyl aluminium aluminum triethanide Triethylaluminium, 0.6M solution in heptane Triethylaluminium, 1.3M solution in heptane Triethylaluminium1.3M solution in heptaneAcroSeal§3 |
| CAS | 97-93-8 |
| EINECS | 202-619-3 |
| InChI | InChI=1/3C2H5.Al/c3*1-2;/h3*1H2,2H3;/rC6H15Al/c1-4-7(5-2)6-3/h4-6H2,1-3H3 |
| InChIKey | VOITXYVAKOUIBA-UHFFFAOYSA-N |
aluminum triethanide - Physico-chemical Properties
| Molecular Formula | C6H15Al |
| Molar Mass | 114.16 |
| Density | 0.85g/mLat 20°C |
| Melting Point | -50°C |
| Boling Point | 128-130°C (50 mmHg) |
| Flash Point | −1°F |
| Water Solubility | reacts |
| Vapor Presure | 1 mmHg ( 62.2 °C) |
| Appearance | liquid |
| Color | colorless |
| Exposure Limit | ACGIH: TWA 50 ppm (Skin)OSHA: TWA 500 ppm(1800 mg/m3)NIOSH: IDLH 1100 ppm; TWA 50 ppm(180 mg/m3) |
| BRN | 3587229 |
| Storage Condition | 0-6°C |
| Sensitive | Air & Moisture Sensitive |
| Physical and Chemical Properties | Colorless transparent liquid. |
| Use | Can be used for the preparation of tertiary alcohols, secondary alcohols and polyolefin catalysts, can also be used as raw materials for other organic compounds, aluminum plating, etc |
aluminum triethanide - Risk and Safety
| Risk Codes | R14 - Reacts violently with water R17 - Spontaneously flammable in air R20/21/22 - Harmful by inhalation, in contact with skin and if swallowed. R34 - Causes burns R67 - Vapors may cause drowsiness and dizziness R65 - Harmful: May cause lung damage if swallowed R51/53 - Toxic to aquatic organisms, may cause long-term adverse effects in the aquatic environment. R11 - Highly Flammable R63 - Possible risk of harm to the unborn child R48/20 - R62 - Possible risk of impaired fertility R14/15 - R23/24/25 - Toxic by inhalation, in contact with skin and if swallowed. R50/53 - Very toxic to aquatic organisms, may cause long-term adverse effects in the aquatic environment. R10 - Flammable |
| Safety Description | S26 - In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. S45 - In case of accident or if you feel unwell, seek medical advice immediately (show the label whenever possible.) S62 - If swallowed, do not induce vomitting; seek medical advice immediately and show this container or label. S6A - S43A - S36/37/39 - Wear suitable protective clothing, gloves and eye/face protection. S24/25 - Avoid contact with skin and eyes. S16 - Keep away from sources of ignition. S43 - In case of fire use ... (there follows the type of fire-fighting equipment to be used.) S61 - Avoid release to the environment. Refer to special instructions / safety data sheets. S33 - Take precautionary measures against static discharges. S46 - If swallowed, seek medical advice immediately and show this container or label. |
| UN IDs | UN 3394 4.2/PG 1 |
| WGK Germany | 2 |
| RTECS | BD2050000 |
| FLUKA BRAND F CODES | 10-21 |
| TSCA | Yes |
| HS Code | 29319090 |
| Hazard Class | 4.3 |
| Packing Group | I |
| Toxicity | LC50 ihl-rat: 10 g/m3/15M 85JCAE -,1216,86 |
aluminum triethanide - Nature
Open Data Verified Data
A colorless transparent liquid at normal temperature and pressure. With water, ammonia, ethanol, hydrogen chloride reaction. Soluble in ethane, heptane and other aliphatic saturated hydrocarbons and toluene, dimethyl benzene and other aromatic hydrocarbons. Triethylaluminum is stable at room temperature. At temperatures above 100 °c, substantial decomposition began. Sensitive to oxygen, spontaneous combustion in the air, and sometimes explosion. Explosive decomposition occurs in water, and combustion.
Last Update：2024-01-02 23:10:35
aluminum triethanide - Hair-making
Open Data Verified Data
The crude triethylaluminum is reacted with water in tetrahydrofuran solution, and then subjected to rectification treatment to obtain high-purity triethylaluminum.
Last Update：2022-01-01 09:31:28
aluminum triethanide - Use
Open Data Verified Data
It is used as a raw material for MOCVD process and is used for depositing aluminum film in the production of diodes, transistors and integrated circuits. Used as a dopant in the fabrication of semiconductors. It is also an excellent catalyst for the polymerization of olefins.
Last Update：2022-01-01 09:31:29
aluminum triethanide - Safety
Open Data Verified Data
no toxicity data have been reported in the literature. It is attached to the skin can damage tissue, the staff should be fully protected. Store in a cool and ventilated place, away from fire and heat sources. The workplace must have fire extinguishing facilities such as fire-resistant asbestos covers, carbon dioxide fire retardants, dry powder fire extinguishing agents, etc., but no use of water, carbon tetrachloride or bromochloromethane fire extinguishing agents.
Last Update：2022-01-01 09:31:29
aluminum triethanide - Reference Information
| NIST chemical information | information provided by: webbook.nist.gov (external link) |
| EPA chemical substance information | information provided by: ofmpeb.epa.gov (external link) |
| Introduction | triethyl aluminum (ID:4-3007; ID: 42022) has special physical and chemical properties: triethyl aluminum is a colorless liquid, the chemical properties are lively, the oxidation reaction is intense, the air can spontaneous combustion, water explosion decomposition into aluminum hydroxide and ethane, and acid, halogen, alcohol amine contact with a severe reaction, the human body has a burning effect. The thermal stability was poor, and the initial decomposition temperature was 120~125. |
| Application | triethylaluminum is an organometallic compound (ie: A compound in which a metal and an organic group are directly bonded to a metal and a carbon). Organometallic compounds are used as reagents or catalysts in the chemistry of organic synthesis. In addition, it is widely used in plastic additives, anti-seismic agents, fungicides and so on. Organometallic compounds are also used as catalysts in fine organic chemicals such as the pharmaceutical industry, perfume industry. In Petrochemical polyolefin process plants, triethylaluminum is used in large quantities due to the need to prepare a polyolefin reaction catalyst. In addition, it is also used in the preparation of rocket fuel. |
| preparation of | the synthesis process of triethylaluminum includes the following steps: 1) Adding titanium powder to the molten aluminum of aluminum ingot, stirring, the titanium is uniformly dispersed in the dissolved aluminum, and the dissolved aluminum is atomized and sprayed to obtain a titanium-containing aluminum powder containing 0.2-0.3% of titanium. 2) in the magnetic drive hydrogenation kettle reaction, aluminum powder in inert gas protection and 10-12MPA, triethyl aluminum as seeds in the hydrogenation kettle stirring hydrogenation reaction; Selective pressure is 10-12MPA, three layers of stirring, the upper layer is inclined Vane turbine, the middle layer is self-priming type, and the lower layer is propeller type, with internal heat exchange coil. The hydrogenation reaction temperature was adjusted to 132-135 °c, and the hydrogenation reaction was completed in 6-7 hours. 3) Reduce the temperature in the kettle to 80-90 °c, and then continuously feed ethylene at 80-130 °c at 0.5-3MPa for ethylation reaction (empirical value is obtained by mass flowmeter, for example, 185/h) 5-6 hours, the crude triethylaluminum. 4) the crude triethylaluminum is vaporized in the distillation column; Triethyl aluminum is vaporized at 550-680kg/h; 5) ethylene is introduced into the transformation reactor at 50-60 ° C to purify the product so that the aluminum trihydride is less than 0.1%;6) the residue after vaporization distillation is diluted with hexane, at a concentration of 5% or less, hexane was hydrolyzed and recovered. |
| uses | can be used for the preparation of tertiary alcohols, secondary alcohols and polyolefin catalysts, can also be used as raw materials for other organic compounds, aluminum plating can be used for the preparation of tertiary alcohols, secondary alcohols and polyolefin catalysts, can also be used as raw materials for the preparation of other metal organic compounds, aluminum plating. The pure product can be used in metal organic chemical vapor deposition (MOCVD) process and can be used as rocket fuel. |
| production method | 1. Aluminum powder and hydrogen are reacted at a certain temperature and pressure to form aluminum hydride, and then reacted with ethylene. 2. The crude Hemi ethyl aluminum chloride is prepared by reacting with metallic sodium. The crude triethylaluminum is reacted with water in tetrahydrofuran solution and then treated by distillation to obtain high purity triethylaluminum. 4. Prepared by the reaction of aluminum powder with ethylene and hydrogen under pressure. 5. Preparation of diethyl aluminum alginate a reflux condenser, a dropping funnel, a mechanical stirrer and a dry nitrogen introduction tube were mounted on a 1 liter three-neck flask. The bottle contained 107g of magnesium and aluminum alloy chips (containing 30% magnesium and 70% aluminum). Under the protection of nitrogen, a small amount of O-ethane was added and the reaction was catalyzed by trace iodine. The reaction bottle was cooled with an oil bath. Over a period of 2.5 hours, 496G of Yi ethane was dropped. After the addition, the reaction was completed by maintaining the temperature at 120 to 140 ° C. For 1 hour. The reaction product was distilled under vacuum to give 376G (91%) of a white water liquid. The boiling point was 75 ° C./2mm, and analysis showed 2.2% ethyl aluminum dibromide. 6. Preparation of triethylaluminum in a 1-liter three-necked flask of the same apparatus described above, under the protection of nitrogen, 50.3g of sodium metal in filiform was placed, and then 152g of diethyl Aluminum Bromide was added dropwise. Heating at 105 ℃,?? The reaction occurred vigorously after 15 minutes. After the reaction was stable, 186g of diethyl Aluminum Bromide was added. The reaction was carried out at 110 ° C. For 1 hour and then heated to 200-210 ° C. For 16 hours. After cooling, the liquid was adsorbed into the gray-white porous solid, which was distilled under reduced pressure at an oil bath temperature of less than 220 ° C. And a vacuum degree of 2 mmHg to obtain 107.4G of the product, it contains 39} triethyl aluminum and} }'O diethyl-sulfided aluminum. For purification, the product was stirred with 2.1g of sodium metal at 110-120 °c for 1 hour, reacted at 155-160 °c for 0 minutes, and then distilled under reduced pressure. The triethylaluminum thus obtained had a purity of 98.5% and a yield of 93.71G. A product with a purity of 99% can be obtained by further distillation. |
| category | spontaneous combustion articles |
| toxicity grade | poisoning |
| Acute toxicity | inhalation-rat LC50: 10000 mg/m3/15 min |
| flammability hazard characteristics | spontaneous combustion in air, chlorine and oxidant; toxic aluminide smoke from combustion |
| storage and transportation characteristics | The warehouse is ventilated and dried at low temperature; Filled with inert gas container packaging; separate from oxidant |
| extinguishing agent | covered with dry sand, dry powder, stone powder |
| Occupational Standard | TWA 2 mg (aluminum)/m3 |
| toxic substance data | information provided by: pubchem.ncbi.nlm.nih.gov (external link) |
Last Update：2024-04-10 22:29:15
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