Trichloroacetic Acid (TCA): Properties, Production, and Industrial Significance
Trichloroacetic Acid (TCA), identified by its CAS number 76-03-9, is a chlorinated derivative of acetic acid with a chemical formula of C2HCl3O2. This compound is characterized by its colorless crystalline appearance, pungent odor, and highly hygroscopic nature. Its excellent solubility in water, ethanol, and ether makes it a versatile reagent across numerous industrial sectors. A comprehensive understanding of TCA's properties, preparation methods, safety considerations, and widespread applications is crucial for professionals in chemistry, pharmaceuticals, agriculture, and materials science.
The physical and chemical properties of TCA are central to its utility. With a melting point of 57.5ºC and a boiling point of 197.5ºC, it exhibits distinct characteristics at various temperatures. Its aqueous solutions are notably acidic, with a pH approaching that of hydrochloric acid, due to the electron-withdrawing effect of the three chlorine atoms. When heated to its boiling point, TCA undergoes decarboxylation, yielding chloroform and carbon dioxide. This reactivity profile makes it a sought-after compound for various chemical transformations.
Several methods exist for the preparation of Trichloroacetic Acid. Common routes include the chlorination of acetic acid in the presence of catalysts or sunlight, the oxidation of trichloroacetaldehyde using oxidizing agents like nitric acid or potassium permanganate, and deep chlorination of monochloroacetic acid mother liquor. The tetrachloroethylene conversion method is another established technique. For industrial procurement, understanding these production pathways can provide insights into sourcing and quality.
The industrial applications of TCA are vast and impactful. In organic synthesis, it is an essential raw material and intermediate for creating a multitude of complex organic molecules and fine chemicals. The pharmaceutical industry utilizes TCA for synthesizing antibiotics and anti-cancer drugs, and its concentrated solutions are used therapeutically for conditions like condyloma acuminata. In agriculture, TCA serves as an effective herbicide and plays a role in the synthesis of pesticides, aiding in crop protection and yield enhancement. Furthermore, its use in chemical analysis as a protein precipitant and for pH adjustment is critical in research and development.
Safety precautions when handling Trichloroacetic Acid are paramount. As a corrosive organic acid, TCA can cause severe skin burns and eye damage. Inhalation of its dust can irritate the respiratory tract, and ingestion can lead to severe internal damage. Proper personal protective equipment, including respiratory protection, chemical goggles, and acid-resistant clothing, is essential. Safe storage involves keeping it in a cool, well-ventilated area, away from incompatible materials like oxidants and alkalis, with tightly sealed packaging.
For businesses looking to buy Trichloroacetic Acid, identifying a reliable TCA supplier or manufacturer is key. Factors such as purity, consistency, packaging, and delivery logistics are critical. We are a dedicated supplier committed to providing high-quality TCA that meets stringent industry standards, supporting your needs in organic synthesis, pharmaceuticals, agriculture, and beyond. Inquire about our pricing and bulk purchase options to secure a dependable supply of this vital chemical intermediate.
Perspectives & Insights
Silicon Analyst 88
“Common routes include the chlorination of acetic acid in the presence of catalysts or sunlight, the oxidation of trichloroacetaldehyde using oxidizing agents like nitric acid or potassium permanganate, and deep chlorination of monochloroacetic acid mother liquor.”
Quantum Seeker Pro
“For industrial procurement, understanding these production pathways can provide insights into sourcing and quality.”
Bio Reader 7
“In organic synthesis, it is an essential raw material and intermediate for creating a multitude of complex organic molecules and fine chemicals.”