Trimethylaluminum CAS 75-24-1
High Quality Trimethylaluminum CAS 75-24-1
- Appearance:Liquid
- Purity:99.8%
- Delivery:30days
- Sample Available:Available
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Name: Trimethylaluminum
CAS: 75-24-1
MOQ: 1KG
Directory Guidance on Trimethylaluminum
Product Introduction:
Trimethylaluminum CAS 75-24-1 is a colorless, flammable liquid with strong reactivity. Its chemical formula is Al (CH3) H3, and the molecule contains one aluminum atom connected to three methyl groups (- CH3). Trimethylaluminum rapidly reacts with moisture in the air, generating hydrogen gas and aluminum hydroxide. Therefore, it is necessary to strictly avoid contact with water when using it.
Trimethylalumin is commonly used in organic synthesis, catalyst manufacturing, and the semiconductor industry. TMA can be used as a strong reducing agent or methylation reagent in chemical reactions to synthesize other compounds. It is also widely used in the production of certain catalysts, such as oligomer catalysts used in polymerization reactions.
In the semiconductor industry, trimethylaluminum is used as a precursor in metal organic chemical vapor deposition (MOCVD) technology, especially in the manufacture of aluminum compound films. Its stability is poor, and it needs to be operated under inert gas protection and stored and used in specialized equipment.
Due to its high reactivity and toxicity, trimethylaluminum requires extra caution during operation to ensure appropriate safety measures are taken, such as wearing protective clothing, goggles, and using a well ventilated experimental environment.
Basic Info:
Chemical Structure
| Melting point | 15 °C |
| Boiling point | 126 °C |
| density | 0.81 g/mL at 25 °C |
| vapor pressure | 69.3 mmHg ( 60 °C) |
| Fp | 40 °F |
| storage temp. | 0-6°C |
Nature and Specifications:
| Item | Specification |
| Product Name | Trimethylaluminum |
| CAS No. | 75-24-1 |
| Appearance | Liquid |
| Shelf Life | 2 years |
| Packing | As your requirements |
| solubility | Soluble in aromatic, saturated aliphatic and cycloaliphatic hydrocarbons. |
| form | Liquid |
| color | Clear colorless |
| Specific Gravity | 0.688 |
What Are The Uses of Trimethylaluminum
Product service:
Trimethylaluminum (TMA) is widely used in various fields due to its unique chemical properties, especially playing an important role in organic synthesis, catalyst manufacturing, and semiconductor industry.
1. Methylation reagents in organic synthesis
Trimethylaluminum is an important methylation reagent that can provide methyl (- CH3) groups for organic chemical reactions. It can react with various compounds, replace hydrogen atoms or other functional groups, and achieve methylation reactions.
For example, in the synthesis of some pharmaceutical intermediates and pesticides, TMA can efficiently introduce methyl groups into the molecular structure. This reaction is commonly used for the preparation of certain organic compounds, methylation of aromatic hydrocarbons, and breaking of carbon hydrogen bonds.
2. Manufacturing of catalysts
Trimethylalumin is also widely used in the manufacture of catalysts, especially in the production of polymers. It is used as a metal source in organic metal catalysts and is typically used in conjunction with other metal organic compounds.
For example, in the production of polyolefins, TMA is used as a component of the catalyst to assist in catalyzing the polymerization reaction. TMA can combine with transition metal compounds to form catalyst complexes, thereby promoting efficient olefin polymerization reactions.
3. Applications in the semiconductor industry
In the field of semiconductor manufacturing, trimethylaluminum is mainly used in metal organic chemical vapor deposition (MOCVD) technology. MOCVD is a technique for depositing thin films through gas-phase chemical reactions at high temperatures, widely used in the production of high-performance semiconductor devices such as blue LEDs, laser diodes, and integrated circuits.
TMA serves as an aluminum source, providing aluminum atoms during the deposition process to form aluminum compound thin films, such as AlSi or AlGaAs thin films. These thin films have important applications in electronic and optoelectronic devices.
4. Surface modification and coating
Trimethylalumin is also used in surface treatment and coating applications, especially in the manufacture of high-performance coatings and films. It can generate aluminum based compounds or aluminum oxide films through reactions, which have excellent corrosion resistance, wear resistance, and thermal stability. In certain high-temperature environments, aluminum oxide films can provide additional protection and extend the material’s lifespan.
5. As a reducing agent
Due to its ability to release methyl radicals in certain reactions, trimethylaluminum can also serve as a strong reducing agent. For example, in some organic synthesis processes, TMA can reduce certain metal ions or reduce compounds from higher oxidation states to lower oxidation states. The application of this reduction reaction includes hydrogenation or dechlorination of some unsaturated compounds.
6. Applications in optical and electronic materials
TMA is also used to manufacture some special optical and electronic materials. For example, trimethylaluminum can be used as one of the sources of aluminum in the production of transparent conductive oxide films such as ITO films. With the development of optoelectronic technology, TMA has been increasingly applied in the synthesis of optical thin films, transparent conductive coatings, and other advanced electronic materials.
Overall, trimethylaluminum has become an indispensable chemical reagent and catalyst in various high-tech fields due to its chemical activity and multifunctionality in different reactions.
Safety Precautions of Trimethylaluminum
Be very careful when using Trimethylaluminum (TMA) as it has strong reactivity and may cause dangerous reactions, especially when in contact with air, moisture, and water.
1. Avoid contact with water
Trimethylaluminum is a strong reducing agent, particularly sensitive to water. When in contact with water, TMA quickly reacts to generate hydrogen gas and release a large amount of heat, which may lead to fire or explosion. Therefore, all containers, equipment, and tools in contact with TMA must be completely dry. During operation, ensure that the surrounding environment is free of moisture.
2. Keep the working environment dry
TMA should be used in a dry and anhydrous environment. In laboratory or production environments, dry inert gases (such as nitrogen or argon) should be used for protection to ensure that there is no moisture in the air. All operating equipment, pipelines, containers, etc. must also be kept dry to prevent any moisture from entering.
3. Sealing of operating equipment and containers
Due to the reaction between trimethylaluminum and oxygen and moisture in the air, it is necessary to ensure that all containers and equipment are completely sealed when using TMA to prevent it from coming into contact with air. During operation, a sealed reactor or bottle should be used to avoid any external contamination.
4. Wear appropriate personal protective equipment (PPE)
When operating Trimethylaluminum, appropriate personal protective equipment must be worn, including:
① Protective goggles or face mask: prevent TMA from splashing into the eyes or face.
② Fireproof work clothes: Chemical resistant fire-resistant clothing should be worn to prevent TMA from contacting the skin and causing burns or chemical burns.
③ Protective gloves: Use chemical resistant gloves to ensure that your hands do not come into direct contact with TMA.
④ Respiratory protection: If necessary, use a respirator in a closed environment to avoid inhaling harmful gases.
5. Avoid contact with oxidants and acidic substances
Trimethylaluminum is a strong reducing agent, so it must be avoided from coming into contact with oxidants or acidic substances. Reacting with these substances may lead to violent chemical reactions or fires. Especially when in contact with oxygen, spontaneous combustion or explosion reactions may occur.
6. Use appropriate storage containers
Trimethylalumin should be stored in dedicated, sealed containers typically made of metal or glass materials and equipped with inert gas protection devices (such as nitrogen or argon). Containers should be kept away from direct sunlight or high temperature environments and stored in a cool and dry place. Containers should be kept away from water sources, moisture, and any substances that may cause reactions.
7. Prevent contact with air
TMA should always be kept in an environment filled with nitrogen or argon, avoiding contact with oxygen and moisture in the air. When using, ensure that there is sufficient ventilation in the operating space, preferably using fume hoods or local exhaust devices to remove harmful gases.
8. Emergency response measures
When operating Trimethylaluminum, it is important to understand the emergency response procedures in advance to ensure quick response in the event of a leak, fire, or poisoning
① In case of fire: If TMA catches fire, water should not be used to extinguish the flames as it can exacerbate the reaction. Dry powder fire extinguishers or carbon dioxide fire extinguishers can be used.
② In case of leakage: The leakage area should be immediately isolated with a dry inert gas (such as nitrogen or argon) to avoid contact with air. Collect the leaked material with appropriate absorbent material.
③ When in contact with skin or eyes: If TMA comes into contact with skin or eyes, immediately rinse with plenty of water and seek medical assistance.
9. Be careful when operating equipment
During the operation, avoid vigorous stirring or excessive temperature, as these may cause the reaction to be too intense. Use appropriate temperature control equipment to ensure that the temperature of TMA is within a controllable range. Avoid using electrical equipment or fire sources close to TMA, as this may cause spontaneous combustion.
10. Pay attention to the disposal of waste
Special care must be taken when handling waste containing trimethylaluminum. These wastes should be processed by professional waste management companies to avoid reacting with water or other chemicals. Waste containers must also be sealed and labeled with danger.
11. Avoid long-term storage
Due to the high activity of trimethylaluminum, it should not be stored for a long time and should be avoided as much as possible. During storage, it is important to regularly check the sealing and condition of the container to prevent leaks or reactions caused by aging or damage.
- Certificate Of Analysis (COA)
- Material Safety Data Sheet (MSDS)
- Route of synthesis (ROS)
- Method of Aanlysis (MOA)
- Nuclear Magnetic Resonance (NMR)
- Packing pictures and loading video before loading
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Related References:
chemicalbook-Trimethylaluminum
wikipedia-Trimethylaluminum
Polyethylene glycol monoallyl ether Manufacturer
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