Acetonitrile, commonly referred to as methyl cyanide, is a clear, colorless liquid solvent with a mild, slightly sweet odor. As a long-term supplier of acetonitrile, questions about its chemical behavior and performance come up frequently from buyers and technical users. In this article, we take a closer look at the fundamental chemical properties of acetonitrile-features that not only define its behavior at the molecular level but also explain why it is so widely used across chemical, pharmaceutical, and industrial applications.
acetonitrile chemical structure
Acetonitrile has the chemical formula (C_2H_3N). Its structure consists of a methyl group ((CH_3)) bonded to a cyano group ((-C≡N)). The carbon - nitrogen triple bond in the cyano group is very strong, with a bond energy of approximately 891 kJ/mol. This strong bond gives acetonitrile some unique chemical and physical properties. The linear arrangement of the (C≡N) group makes the molecule polar, with a dipole moment of about 3.92 D. This polarity is important as it influences its solubility and reactivity.
acetonitrile solubility
One of the most significant chemical properties of acetonitrile is its solubility. It is miscible with water in all proportions. This miscibility is due to the ability of acetonitrile to form hydrogen bonds with water molecules. The nitrogen atom in the cyano group has a lone pair of electrons that can interact with the hydrogen atoms of water through hydrogen - bonding forces.
Acetonitrile is also a good solvent for a wide variety of organic compounds. It can dissolve many polar and non - polar organic substances, making it a versatile solvent in chemical synthesis and analytical chemistry. For example, it is commonly used in high - performance liquid chromatography (HPLC) because it can dissolve both polar analytes and non - polar stationary phases. Its solubility properties also make it useful in the extraction of organic compounds from aqueous solutions.
Chemical properties of acetonitrile
Acetonitrile is a colorless, transparent liquid with a mild, ether-like odor. It is miscible with water, methanol, methyl acetate, acetone, ether, chloroform, carbon tetrachloride, and vinyl chloride.
- Acetonitrile is a stable compound, which is not easy to be oxidized or reduced, but there is a three bond between carbon and nitrogen, which is prone to addition reactions, such as addition with hydrogen halide, addition with hydrogen sulfide, addition with alcohol and addition with acid or anhydride in the presence of inorganic acid.
- Hydrolyze in the presence of acid or base to produce amide and further hydrolyze to acid:
- Reduce to ethylamine.
- Reacting with Grignard reagent, the product is hydrolyzed to ketone.
- Acetonitrile can react with sodium metal, sodium alcohol or sodium amino.
Acetonitrile Applications
Pharmaceutical and Chemical Synthesis
Acetonitrile is widely used as a reaction solvent in pharmaceutical manufacturing and fine chemical synthesis. Its polar aprotic nature supports efficient reaction kinetics while maintaining good selectivity and stability.
Analytical Chemistry
In analytical laboratories, acetonitrile is a standard component of HPLC mobile phases due to its low viscosity, high elution strength, and minimal UV interference.
Industrial and Electronic Applications
High-purity acetonitrile is also used in electronic chemicals, surface cleaning, and specialty manufacturing processes where solvent consistency and impurity control are critical.
Why Choose Gneebio as Your Supplier?
As a Acetonitrile (CAS 75-05-8) manufacturer, Gneebio focuses on product consistency, industrial applicability, and bulk supply reliability. The company operates under strict quality management systems to ensure that Acetonitrile (CAS 75-05-8) meets the requirements of large-scale and continuous production environments.
Key manufacturing and supply strengths include:
- Controlled purity grades suitable for industrial and synthetic applications
- Stable batch-to-batch quality for long-term procurement
- Bulk supply capability to support contract and spot orders
- Export-ready packaging and documentation (COA, SDS, etc.)
Click here to get the latest global Acetonitrile (CAS 75-05-8) manufacturer market prices for 2026.
