Dimethylamino trimethylsilane is a very adaptable organosilicon compound that is also known by its CAS number 2083-91-2. It is necessary to contemporary chemical synthesis. This substance is an important silylation reagent and is frequently referred to as TMS-DMA. Its effectiveness in shielding reactive hydrogen groups makes it valuable to experts. It is necessary in a variety of industrial and laboratory settings due to its special qualities. For example, it is widely used by chemists to synthesize complex organic molecules. For experts and engineers working in these fields, it is therefore necessary to comprehend its characteristics.
Dimethylamino’s Chemical Properties Trimethylsilane
The chemical behavior of dimethylamino trimethylsilane is determined by its molecular structure. (CH3)3SiN(CH3)2 is its molecular formula. A dimethylamino group and a trimethylsilyl group are combined in this structure. This combination then gives the molecule a particular reactivity. This organosilane compound has a molecular weight of 117.23 g/mol.
Accurate nomenclature is important in the field of chemistry. As a result, there are numerous accepted synonyms for this compound. It is sometimes referred to as n,n-dimethyltrimethylsilylamine by chemists. Trimethylsilyl dimethylamine is another popular name. The same molecule is described by all of these names. Both commercial listings and scientific literature use them interchangeably. The silicon-nitrogen bond is necessary to its operation. Protic sources have the ability to cleave this bond. This reactivity makes it an excellent silylation reagent.
Moreover, it is usually a colorless to pale yellow liquid in its physical state. It has a distinctive amine-like smell. It has a boiling point between 84 and 86 °C. For purification procedures like distillation, this physical characteristic is important. Additionally, the compound is moisture-sensitive. It reacts with water easily. Trimethylsilanol is created when the Si-N bond is hydrolyzed in this reaction. Anhydrous conditions are therefore necessary for handling and storage.
Dimethylamino Trimethylsilane’s properties and purity (CAS 2083-91-2)
For industrial and research applications, product quality and consistency are critical. For dimethylamino trimethylsilane, purity levels directly impact the outcome of chemical reactions. This compound is usually supplied by manufacturers with a purity of ≥98%. For more delicate applications, higher purity grades are also offered.
The usual requirements for a premium grade of dimethylamino trimethylsilane CAS 2083-91-2 are listed in the table below. The Certificate of Analysis (CoA) for the particular batch being used should always be consulted by chemists and engineers.
| Specification | Typical Value | Notes |
| Purity (by GC) | ≥98.0% | Gas Chromatography is used for accurate purity determination. |
| Appearance | Colorless to pale yellow liquid | Visual inspection is the first quality check. |
| Molecular Formula | (CH3)3SiN(CH3)2 | Confirms the chemical identity. |
| Molecular Weight | 117.23 g/mol | A fundamental chemical constant. |
| CAS Number | 2083-91-2 | The unique identifier for this chemical substance. |
| Boiling Point | 84-86 °C | Important for handling and purification. |
| Density (at 25 °C) | ~0.76 g/mL | Useful for calculating mass and volume. |
| Refractive Index (n20/D) | ~1.407 | A measure of purity and identity. |
| Moisture Content | ≤0.5% | Critical due to its reactivity with water. |
| Solubility | Soluble in most organic solvents | Insoluble in water (reacts). |
These requirements guarantee that the substance functions as planned during the synthesis of organosilicon. For particular applications, different grades might be available. For instance, the limits on metallic impurities may be more stringent for an electronic grade. On the other hand, a typical synthesis grade might prioritize chemical purity. The grade and its accompanying specifications always provide the end-user with the required quality assurance.
Uses for Dimethylamino Trimethylsilane in Business
Dimethylaminotrimethylsilane is used in many different industries. Its main function is that of a silylation reagent. It does this by adding a trimethylsilyl (TMS) group to a substrate molecule. In organic synthesis, this procedure is necessary. Reactive functional groups are safeguarded. In particular, it works very well to protect carboxylic acids, amines, and alcohols.
Effective hydrogen protecting group is provided by the substance. Certain reactive hydrogens can obstruct desired reactions during a multi-step synthesis. Chemists can avoid undesirable side reactions by temporarily substituting a TMS group for these hydrogens. For instance, when a hydroxyl group is protected as a TMS ether during the synthesis of pharmaceuticals, other molecule components can be altered. Once you finish the intended changes, you can readily eliminate the TMS group. Usually, the treatment involves using a mild acid or fluoride source. Modern synthetic chemistry is based on this “protection-deprotection” approach.
This organosilane compound is a strong catalyst in addition to its protective function. Because the dimethylamino group is basic, it can catalyze specific reactions. In specialized industrial processes, its application can speed up procedures and increase yields. For example, silicones and other organosilicon polymers are made using it. It can function as a cross-linking agent or a chain terminator.
High-purity silylation reagent grades are also used in the electronics sector. These substances alter surfaces. They are able to produce thin films with particular characteristics. They can be applied to the surfaces of silicon wafers in the production of semiconductors. This process can passivate the surface or increase photoresist adherence. All things considered, dimethylamino trimethylsilane’s adaptability makes it a useful instrument for both large-scale production and research.
Guidelines for Dimethylamino Trimethylsilane Safety and Handling (CAS 2083-91-2)
When handling dimethylamino trimethylsilane, it is necessary to follow the right safety and handling protocols. This substance is corrosive and flammable. Additionally, it is moisture-sensitive. Therefore, to avoid mishaps and guarantee worker safety, workers must rigorously follow safety procedures
First, always work with the compound in an area with good ventilation. It is highly advised to use a chemical fume hood. This stops vapors from being inhaled. The respiratory system may become irritated by its fumes. PPE, or personal protective equipment, is important. This consists of a lab coat, chemical-resistant gloves (like nitrile or neoprene), and safety goggles or a face shield. Severe burns can result from skin contact. If contact occurs, flush the affected area thoroughly for at least 15 minutes.
The conditions of storage are equally important. Dimethylamino trimethylsilane should be kept in a container that is tightly closed. A cool, dry, and well-ventilated location is ideal for the container. Keep it away from open flames or sparks. Additionally, it needs to be kept apart from materials that are incompatible. These consist of oxidizing agents, acids, and water. When it reacts with water, it produces flammable dimethylamine gas. Therefore, conduct all transfers and reactions under an inert atmosphere, such as nitrogen or argon.
Lastly, before using the compound, always refer to the Material Safety Data Sheet (MSDS). The MSDS offers thorough details on risks, first aid protocols, and emergency protocols. It describes how to clean up spills and put out fires. Use carbon dioxide or dry chemical powder for fires involving this compound. Avoid using water. You can handle the material safely and react appropriately in an emergency if you are familiar with the MSDS.
Common Questions Regarding CAS 2083-91-2 Dimethylamino Trimethylsilane
What is Dimethylamino Trimethylsilane’s molecular formula?
(CH3)3SiN(CH3) is the molecular formula. 2.
What is this compound’s molecular weight?
117.23 g/mol is the molecular weight.
How pure is dimethylaminotrimethylsilane?
The purity of commercial grades is usually ≥98%.
What are this compound’s main uses?
Its main uses are in specialized industrial processes and as a silylation reagent and protective group in chemical synthesis.
What safety measures need to be followed when working with it?
You should use the proper PPE and handle it in a fume hood. Keep it away from sources of moisture and ignition in a cool, dry location. Always abide by the MSDS’s instructions.
