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Information @ a Glance

Introduction

  • TCA is a pre-emergence herbicide for the control of annual and perennial grasses in oilseed rape, sugar beet, fodder beet, asparagus , rhubarb, carrots, potatoes, tomatoes, peas, field beans, lettuce, alfalfa, sunflowers, sugar cane, cotton, flax, rice, gladioli and on non-crop areas.
  • TCA - sodium is a halogenated alkonoic acid systemic herbicide.
  • Trichloroacetic acid (TCA) is an industrial chemical that is found in nature mainly through its use as a herbicide against perennial weeds.
  • Trade names for trichloroacetic acid include Aceto-Caustin and Amchem Grass Killer.

Process

  • Trichloroacetic acid is produced on an industrial scale by chlorination of acetic acid or chloroacetic acid at 140–160 °C.
  • Three processes were used to manufacture TCA: exhaustive chlorination of acetic acid, oxidation of chloral (CCl3CHO) using H2O2 and hydrolytic oxidation of PCE.
  • Trichloroacetic acid has been determined in water using liquid–liquid extraction, conversion to its methyl ester and gas chromatography with electron capture detection.

Uses

  • Trichloroacetic acid is a chemical that is commonly used for cosmetic skin peels and removal of warts, skin tags, moles, and tattoos.
  • Trichloroacetic acid (TCAA) was not only used as herbicide, but also formed in the environment itself in many ways.
  • It is also used extensively as a precipitant of protein in the chemical analysis of body fluids and tissue extracts, and as a decalcifier and fixative in microscopy.
  • Trichloroacetic acid is used as a soil sterilizer and a laboratory intermediate or reagent in the synthesis of a variety of medicinal products and  organic chemicals.
  • Trichloroacetic acid is also used industrially as an etching and pickling agent for the surface treatment of metals and as a solvent in the plastics industry.

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